Index

PAGE

3 Intro
4 How to Specify a Unit
6 Weights & PL Factor
7 MH 101 / 102 Specifications
9 Pump Performance
18 Shaft End Cover Mounting Specifications
22 All Series Dimensional Data
29 Drive Shaft Dimensional Data
32 MH 300 Series Dimensional Data
33 Bearing Pump Displacement Values
34 Bushing Pump Displacement Values
35 Flow Divider Coding
36 MH 15 Build Code
39 MH 20 Build Code
44 MH 25 Build Code
50 MH 30/31 Build Code
55 MH 37 Build Code
60 MH 50/51 Build Code
66 MH 75/76 Build Code
72 MH 315 Build Code
74 MH 330 Build Code
76 MH 350 Build Code
78 MH 365 Build Code
80 Piggyback Pump Identification
81 Warranty Policy And Procedures

2 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 GEAR PUMPS AND MOTORS

FLUID POWER FOR MOBILE EQUIPMENT

METARIS pumps and motors are particularly well suited for heavy duty mobile equipment applications.
They are designed for extreme duty cycles and continuous heavy duty operation. The pumps and motors
are a rugged design, but precision manufactured.

Pumps are available in single section units or several sections can be combined into one unit. A wide
selection of mounting flanges and drive shafts are available to fit most applications. Pipe thread, "O" ring,
or split flange are available in both metric and SAE standards.

Metaris pumps and motors are manufactured under strict quality control systems which are monitored by
ISO 9001-2000 standards.

METARIS PUMP / MOTOR FEATURES

Sectional construction; Quality gear construction, high strength gray and ductile iron castings, repair
components available throughout the world and a wide range of configurations to suit most applications.

Multiple Pump Units; Several pump sections or piggyback units can be combined on a single drive, to
eliminate multiple power take-off drives.

Precision Matched Gears; All gear sets are designed, and machined from high alloy bar, surfaces are
precision finished and each gear set is matched for maximum efficiency. The 10 tooth construction gives
maximum output per centimeter width per revolution.

Bearings; Quality roller bearings are utilized on journals to reduce the wear caused from contamination
within the hydraulic system.

Bushing Pumps; Bushings are constructed from quality materials and Teflon coated for maximum wear life.

INTERCHANGEABILITY
Metaris hydraulic units are directly interchangeable with most other manufactures.

ALL MANUFACTURERS NAME SYMBOLS AND DESCRIPTIONS IN THIS DOCUMENT ARE FOR
REFERENCE PURPOSES ONLY. IT IS NOT IMPLIED THAT ANY PART LISTED IS THE PRODUCT
OF THESE MANUFACTURERS.

3
METARIS MH SERIES UNITS

HOW TO SPECIFY AND CODE

THIS CATALOG CONTAINS CODES FOR MOST WIDELY USED MODELS ONLY; OTHER ASSEMBLY CODES ARE
AVAILABLE FROM OUR SALES REPRESENTATIVES.

SINGLE UNITS / MULTIPLE UNITS

METARIS PUMPS AND MOTORS ARE AVAILABLE AS SINGLE UNITS OR MULTIPLE ASSEMBLIES THE FULL ASSEMBLY
CODE FOR THE FINISHED UNIT COMBINES INDIVIDUAL CODES FOR SHAFT END COVER, PORT END COVER, GEAR
HOUSING, AND DRIVE SHAFT. THE CODE IS PRECEDED BY THE LETTER “P” FOR PUMP OR “M” FOR MOTOR, AND THE
LETTER “A” , “B” , OR “C” FOR MODEL. NOTE THE EXAMPLE OF THE PROCEDURE.

SINGLE UNIT MULTIPLE UNIT

ASSEMBLY CODE MHM50A-842-BE-OL15-43 ASSEMBLY CODE MHP75B-178-BI-OK15-7-C-OK12-1

1 MOTOR M 1 PUMP P
2 SERIES 50 2 SERIES 75
3 MODEL A 3 MODEL B
4 SHAFT END COVER 842 4 SHAFT END COVER 178
5 PORT END COVER BE 5 PORT END COVER BI
6 GEAR HOUSING OL15 6 GEAR HOUSING OK15
7 DRIVE SHAFT 43 7 DRIVE SHAFT 7
8 BEARING CARRIER C
9 GEAR HOUSING OK12

MHM50 SINGLE MOTOR MHP75 MULTIPLE PUMP

4 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 IDENTIFYING METARIS HYDRAULIC PUMPS / MOTORS
1– LOOK AT THE UNIT FROM THE PORT END; SEE WHICH EXAMPLE IT MATCHES THE CLOSEST. INCLUDE THE SHAPE
2– MEASURE THE OVERALL WIDTH OF THE UNIT, THEN MATCH THE WIDTH TO THE CHART BESIDE THE PORT END COVER
3– NOTE: IDENTIFICATION SIZE MAY DIFFER WITH DIFFERENT PORTING

PORT END COVER

SERIES MH315 MH330 MH350 MH365

SIDE PORT WIDTH 4.25 6.68 7.12 7.38

UNPORTED WIDTH 4.00 4.81 5.75 6.25

SERIES MH37X MH75 MH76

WIDTH 5.12 6.13 6.13

SERIES MH15 MH20 MH25X MH30/31 MH50/51

WIDTH 4.38 4.5 4.94 4.81 4.94

SHAFT END COVER LOOK AT THE SHAFT END AND COMPARE IT TO THE VIEWS BELOW, SELECT THE SHAFT
TYPE OF YOUR UNIT.

SERIES MH30, MH31, MH50, MH51 MH25X, MH37X

NO RETAINER WITH OUTBOARD SCREW IN

OUTBOARD BEARING BEARING RETAINER

GEAR HOUSING
SERIES MH31 / MH51 / MH76 - THE ONLY WAY TO DETERMINE THIS SERIES IS TO DISASSEMBLE THE UNIT AND LOOK FOR DOWEL PINS

MH 20,25,30,31,50,51
HOUSING WIDTH 1.25 1.5 1.75 2 2.25 2.5 2.75 3
GEAR WIDTH 0.5 0.75 1 1.25 1.5 1.75 2 2.25
MH 37X,75,76
HOUSING WIDTH 1.5 1.75 2 2.25 2.5 2.75 3 4
GEAR WIDTH 0.5 0.75 1 1.25 1.5 1.75 2 3
MH 315
HOUSING WIDTH 0.9 1.15 1.4 1.65 1.9 2.15 2.4 N/A
GEAR WIDTH 0.5 0.75 1 1.25 1.5 1.75 2 N/A
MH 330
HOUSING WIDTH 1 1.5 1.75 2 2.25 2.5 N/A N/A
GEAR WIDTH 0.5 1 1.25 1.5 1.75 2 N/A N/A
MH 350
HOUSING WIDTH 1 1.5 1.75 2 2.25 2.5 2.75 3
GEAR WIDTH 0.5 1 1.25 1.5 1.75 2 2.25 2.5
MH 365
HOUSING WIDTH 1.5 1.75 2 2.25 2.5 2.75 3 N/A
GEAR WIDTH 1 1.25 1.5 1.75 2 2.25 2.5 N/A

5
WEIGHTS
SINGLE UNIT APPROXIMATE WEIGHT
Gear Width

Model Unit weight 1/2" 3/4" 1" 1 1/4" 1 1/2" 1 3/4" 2" 2 1/4" 2 1/2" 2 3/4" 3"
MH15 Pounds 24 25 26 27.5 29 30.5 32.5 * * * *
MH20 Pounds 24 25 26 27.5 29 30.5 32.5 * * * *
MH25 Pounds 36 39 42 43.5 45 46.5 48 50 52 * *
MH30 / 31 Pounds 30 31 32 33 34 35 36 * 38.5 * *
MH37 Pounds 52 54 56 58 60 62 65 68 71 * 78
MH50 / 51 Pounds 37 40 43 44.5 46 47.5 49 51 53.5 * *
MH75 / 76 Pounds 67 70 72 74 76 79 82 85 88 * 92
MH 315 Pounds 16 17 18 19 20 21 22 * * * *
MH 330 Pounds * 34.8 36 37.3 38.5 39.8 41 42.3 43.5 * *
MH 350 Pounds * 49.5 51 52.5 54 55.5 57 58.5 60 * *
MH 365 Pounds * * 56 58.5 61 63.5 66 68.5 71 73.5 76
MHC 101 Pounds * * * * * * 67 * 69 * *
MHC 102 Pounds * * * * * * 68 * 70 * *
MHG 101 Pounds * 31 * * 35 * 38 * * * *
MHG 102 Pounds * 31 * * 35 * 38 * * * *

MULTIPLE UNIT APPROXIMATE WEIGHT

Gear Width
Model Unit weight 1/2" 3/4" 1" 1 1/4" 1 1/2" 1 3/4" 2" 2 1/4" 2 1/2" 2 3/4" 3"
MH15 Pounds 21 22 23 24 25 26 28 * * * *
MH20 Pounds 21 22 23 24 25 26 28 * * * *
MH25 Pounds 28.5 30 31.5 33 34.5 36 37 41 44 * *
MH30 / 31 Pounds 23 24 26 27 28 30 31 * * * *
MH37 Pounds 43 45 47 50 53 56 59 62 65 * 68
MH50 / 51 Pounds 29.5 31 32.5 34 35.5 37 38 42 45 * *
MH75 / 76 Pounds 54 57 60 63 65 67 69 71 73.5 * 76
MH 315 Pounds 16 17 18 19 20 21 22 * * * *
MH 330 Pounds * 31.3 32.5 33.8 35 36.3 37.5 38.8 40 * *
MH 350 Pounds * 49.5 51 52.5 54 55.5 57 58.5 60 * *
MH 365 Pounds * * 56 58.5 61 63.5 66 68.5 71 73.5 76

For the total weight of a multiple unit add the weight from the column of the single unit and the multiple unit column.
( e.g. MH15 single unit 3/4” gear width is 25 pounds plus MH15 multiple unit 3/4” gear width is 22 pounds total weight is 47 pounds)

For total weight in kilograms divide total weight in pounds by 2.2 = weight in kilograms
(e.g. 47 pounds ÷ 2.2 = 21.36 kilograms)

PL Factor
Each section of a multiple unit should be regarded as a single unit with corresponding delivery and power input requirements. Since the entire input
horsepower is fed through a common drive shaft, the power delivered to or from the unit is limited by the physical strength of the shaft. This limit is
defined as a “PL” factor, “P” being the operating pressure and “L” being the summation of the total gear widths.

In multiple units the “PL” must be calculated for the first connecting shaft as well as the drive shaft.
Each style or type of shaft has a unique “PL” factor as noted in the table with the performance data.

Pressure X Total Gear Width = PL

6 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 DUMP PUMPS
Speed RPM RPM 3/4" 1 1/2" 2" 2 1/2"
MHG101 1800 GPM 9.5 21 29 -
1800 LPM 36 79.5 109.3
MHG102 1800 GPM 9.5 21 29 -
1800 LPM 36 79.5 109.3
MHC101 1800 GPM - - 39 48
1800 LPM 147 180.5
MHC102 1800 GPM - - 39 48
1800 LPM 147 180.5
Maximum RPM 2400
MH101G / 102G MH101G / 102G

Performance data shown are the average results based on series of tests of production units and not necessarily representative of any
one unit. Tests were run with oil viscosity 150 SUS at 100°F

MH102 .875 DIA.

13T SPLINE RETURN

4.00 [101.60] INLET

-20 2.75 [69.85]

1.63 [41.28] -25 3.25[82.55]

-20 {16.00 [406.40]}

-25 {16.50 [419.10]}

MH101
RETURN
1.00 [25.40]

INLET

0.25 [6.35]
-20 2.75 [69.85]
2.38 -25 3.25 [82.55]

-20 {15.50 [393.70]}

-25 {16.00 [406.40]}

7
MH 101 / 102 SERIES COMBINATION PUMPS

Installation and Operation of the MH101 /102 pumps

Note: For intermittent use only

Two Line Installation plugged port

* One Line to the to the cylinder

* One Line to the to the supply line of the reservoir
* Tank port on the pump is plugged

* When the spool is in neutral oil recirculates internally

* When the spool is in the raised position oil is routed to the cylinder port to raise the cylinder
* When the spool is in the lower position oil flow from the cylinder is routed back through the relief
back to the inlet of the pump.

Note: For intermittent of continuous use

Three line Installation

* One Line to the to the cylinder

* One Line to the to the supply line of the reservoir
* One Line to the to the return line of the reservoir
* The sleeve is installed in the inlet port of the pump

When installing Air shifters

* Lubricate all moving parts before assembly

* Do not over tighten the mounting bolts
* Operate the spool by air to inspect
proper movement .

8 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MODEL MH315
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

PUMP PERFORMANCE DATA

Speed RPM 1/2" 3/4" 1" 1 1/4" 1 1/2" 1 3/4" 2"
900 GPM 2 3.2 4.4 5.5 6.7 7.9 9
LPM 8 12 17 21 26 30 34
1200 GPM 2.8 4.4 6 7.6 9.2 10.7 12.2
LPM 11 17 23 29 35 40 46
1500 GPM 3.6 5.6 7.7 9.6 11.6 13.5 15.4
LPM 14 21 29 36 44 51 58
1800 GPM 4.4 6.8 9.3 11.6 14 16.3 18.6
LPM 17 26 35 44 53 62 70
2100 GPM 5.2 8.1 10.9 13.6 16.4 19.1 21.8
LPM 20 30 41 51 62 72 83
2400 GPM 6 9.3 12.5 15.6 18.8 21.9 25.1
LPM 23 35 47 59 71 83 95
3000 GPM 7.7 11.7 15.7 19.6 23.7 27.6 31.5
LPM 29 44 59 74 90 104 119

MOTOR PERFORMANCE DATA

Speed 1" 1 1/4" 1 1/2" 1 3/4" 2"
RPM 3500 PS1 3500 PS1 3250 PSI 2900 PSI 2500 PSI
A B A B A B A B A B
900 7.1 665 8.3 830 9.6 925 10.9 965 12.2 950
27 75.1 32 93.8 37 104.5 41 109 46 107.3
1200 8..8 665 10.5 830 12.2 925 13.8 965 15.5 950
33 75.1 40 93.8 46 104.5 52 109 59 107.3
1500 10.6 660 12.6 825 14.7 920 16.7 955 18.8 945
40 74.6 48 93.2 56 103.9 63 107.9 71 106.8
1800 12.3 665 14.7 820 17.2 915 19.6 950 22.1 940
46 74 56 92.6 65 103.4 74 107.3 84 106.2
2100 14 665 16.8 820 19.7 915 22.5 950 25.4 940
53 74 64 92.6 75 103.4 85 107.3 96 106.2
2400 15.7 640 18.9 800 22.2 895 25.4 930 28.8 920
59 72.3 72 90.4 84 101.1 96 105.1 109 103.9
3000 19 640 23 800 27.2 890 31.2 925 35.3 915
72 72.3 87 90.4 103 100.6 118 104.5 134 103.4

A: Input Flow GPM / LPM

MH315 PL CHART
B: Output Torque IN / lbs Nm
Shaft Style Integral Two Piece
GW: Gear Width
SAE "A" Spline (To 1.25 G.W) 4,450

SAE "A" Key 3600

SAE "B" Spline 13,400

SAE "B" Key 9,900

Connecting Shaft 5,550

9
MODEL MH330
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

PUMP PERFORMANCE DATA

Speed RPM 1/2" G.W. 3/4" G.W. 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W.
900 GPM 3.2 5.1 7 8.8 10.6 12.4 14.3
LPM 12 19 26 33 40 47 54
1200 GPM 4.5 7 9.5 12 14.5 16.9 19.4
LPM 17 26 36 45 55 64 73
1500 GPM 5.8 8.9 12.1 15.2 18.3 21.4 24.5
LPM 22 34 46 57 69 81 93
1800 GPM 7.1 10.8 14.7 18.4 22.1 25.9 29.6
LPM 27 41 55 70 84 98 112
2100 GPM 8.4 12.7 17.2 21.6 26 30.3 34.7
LPM 32 48 65 82 98 115 131
2400 GPM 9.6 14.7 19.8 24.8 29.8 34.8 39.8
LPM 36 55 75 94 113 132 151
3000 GPM 12.2 18.5 24.9 31.2 37.5 43.8 50.1
LPM 46 70 94 118 142 166 190

MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W.
RPM 3500 PS1 3500 PS1 3500 PSI 3250 PSI 3000 PSI
A B A B A B A B A B
900 10.1 1010 12.3 1270 14.5 1530 16.7 1665 19 1770
38 114.1 47 143.5 55 172.9 63 188.1 72 200
1200 12.8 1005 15.7 1265 18.6 1525 21.4 1660 24.3 1760
49 113.6 59 142.9 70 172.3 81 187.6 92 198.9
1500 15.6 1000 19.1 1255 22.6 1515 26.1 1650 29.6 1750
59 113 72 141.8 85 171.2 99 186.4 112 197.7
1800 18.4 995 22.5 1250 26.6 1505 30.8 1640 34.9 1740
69 112.4 85 141.2 101 170 116 185.3 132 196.6
2100 21.1 990 25.9 1240 30.7 1495 35.4 1625 40.2 1720
80 111.9 98 140.1 116 168.9 134 183.6 152 194.3
2400 23.9 985 29.3 1235 34.7 1480 40.1 1605 45.5 1695
90 111.3 111 139.5 131 167.2 152 181.3 172 191.5
3000 29.2 980 35.9 1230 42.6 1475 49.3 1595 56 1685
110 110.7 136 139 161 166.7 186 180.2 212 190.4

MH330 PL CHART
A: Input Flow GPM / LPM Shaft Style Integral Two Piece
SAE "BB" Spline 13,000 6,250
B: Output Torque IN / lbs Nm SAE "BB" Key 9,300 6,250
GW: Gear Width SAE "B" Spline 8,450 6,250
SAE "B" Key 6,250 6,250
SAE "C" Spline * 6,250
SAE "C" Key * 6,250
Connecting Shaft 6,250

10 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MODEL MH350
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

PUMP PERFORMANCE DATA

Speed RPM 1/2" G.W. 3/4" G.W. 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W. 2 1/4" G.W. 2 1/2" G.W
900 GPM 4 6.4 8.8 11.2 13.7 16.1 18.6 21 23.4
LPM 15 24 33 42 52 61 70 70 90
1200 GPM 5.6 8.8 12.1 15.4 18.7 21.9 25.2 28.4 31.7
LPM 21 33 46 58 71 83 95 108 120
1500 GPM 7.3 11.3 15.5 19.5 23.6 27.7 31.8 35.9 40
LPM 28 43 59 74 89 105 120 136 151
1800 GPM 8.9 13.8 18.8 23.6 28.6 33.5 38.4 43.3 48.3
LPM 34 52 71 89 108 127 145 164 183
2100 GPM 10.6 16.3 22.1 27.8 33.6 39.3 45.1 50.8 56.6
LPM 40 62 84 105 127 149 171 192 214
2400 GPM 12.2 18.8 25.4 31.9 38.5 45.1 51.7 58.2 64.8
LPM 46 71 96 121 146 171 196 220 245

MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W.
RPM 3500 PSI 3500 PSI 3500 PSI 3250 PSI 3000 PSI
A B A B A B A B A B
900 13.4 1320 16 1670 18.6 2025 21.2 2225 23.8 2350
51 149.1 61 188.7 70 228.8 80 251.4 90 265.5
1200 15.9 1315 20.4 1660 23.8 2015 27.2 2215 30.6 2340
64 148.6 77 187.6 90 227.7 103 250.3 116 264.4
1500 20.5 1300 24.7 1640 28.9 1990 33.2 2195 37.4 2315
77 146.9 93 185.3 110 224.8 126 248 142 261.6
1800 24 1295 29 1635 34.1 1980 39.2 2180 44.2 2300
91 146.3 110 184.7 129 223.7 148 246.3 167 259.9
2100 27.5 1285 33.4 1620 39.3 1965 45.2 2165 51.1 2285
104 145.2 126 183 149 222 171 244.6 193 258.2
2400 31 1265 37.7 1600 44.4 1940 51.2 2135 57.9 2255
117 142.9 143 180.8 168 219.2 194 241.2 219 254.8

Speed 2 1/4" G.W. 2 1/2" G.W.

RPM 2750 PSI 2500 PSI A: Input Flow GPM / LPM
A B A B
B: Output Torque IN / lbs Nm
900 26.4 2425 28.9 2450
100 274 110 276.8 GW: Gear Width
1200 34 2410 37.4 2435
129 272.3 142 275.1 MH350 PL CHART
1500 41.7 2385 45.9 2410 Shaft Style Integral Two Piece
158 269.5 174 272.3 SAE "BB" Spline 9,900 9,000
1800 49.3 2375 54.4 2395 SAE "BB" Key 7,100 7,100
187 268.3 206 270.6 SAE "B" Spline 6,450 6,450
2100 57 2355 62.9 2380 SAE "B" Key 4,750 4,750
216 266.1 238 268.9 SAE "C" Spline 19,100 9,000
SAE "C" Key 13,900 9,000
2400 64.6 2325 71.3 2350
Connecting Shaft 9,000
245 262.7 270 265.5

11
MODEL MH365
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

PUMP PERFORMANCE DATA

Speed RPM 3/4" G.W. 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W. 2 1/4" G.W. 2 1/2" G.W.
900 8 11.5 14.9 18.4 21.8 25.4 28.8 32.3
30 44 57 70 83 96 109 122
1200 11.5 16.2 20.8 25.5 30 34.7 39.3 44
44 61 79 96 114 131 149 166
1500 15 20.9 26.6 32.5 38.2 44.1 49.8 55.6
57 79 101 123 145 167 188 211
1800 18.5 25.6 32.5 39.5 46.4 53.4 60.3 67.3
70 97 123 149 176 202 228 255
2100 22 30.2 38.3 46.5 54.6 62.8 70.8 79
83 114 145 176 207 238 268 299
2400 25.6 34.9 44.2 53.5 62.8 72.1 81.4 90.7
97 132 167 203 238 273 308 343

MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W. 2 1/4" G.W. 2 1/2" G.W.
RPM 3500 PS1 3500 PS1 3500 PSI 3250 PSI 3000 PSI 2750 PSI 2500 PSI
A B A B A B A B A B A B A B
900 18.4 1865 22 2355 25.6 2860 29.2 3370 32.9 3850 36.5 4020 40.1 4125
70 210.7 83 266.1 97 323.1 111 380.8 124 435 138 454.2 152 466.1
1200 23.3 1845 28.1 2330 32.9 2830 37.6 3335 42.4 38 47.2 3980 52 4080
88 208.5 106 263.3 124 319.7 142 376.8 160 430.5 179 449.7 197 461
1500 28.2 1815 34.1 2295 40.1 2780 46 3280 52 3750 57.9 3915 63.8 4020
107 205.1 129 259.3 152 314.1 174 370.6 197 423.7 219 442.3 242 454.2
1800 33.1 1805 40.2 2280 47.3 2765 54.4 3265 61.5 3730 68.6 3895 75.7 3995
125 203.9 152 257.6 179 312.4 206 368.9 233 421.4 260 440.1 287 451.4
2100 37.9 1755 46.2 2220 54.4 2690 62.8 3160 71.1 3610 79.3 3770 87.6 3865
144 198.3 175 250.8 206 303.9 238 357 269 407.9 300 426 332 436.7
2400 42.8 1705 52.3 2155 61.7 2615 71.2 3055 80.6 3490 90.1 3645 99.5 3740
162 192.6 198 243.5 234 295.5 269 345.2 305 394.3 341 411.8 377 422.6

A: Input Flow GPM / LPM

B: Output Torque IN / lbs Nm

MH365 PL CHART
Shaft Style Integral Two Piece GW: Gear Width
SAE "BB" Spline 7,750 7,750
SAE "BB" Key 5,550 5,550
SAE "B" Spline 5,050 5,050
SAE "B" Key 3,700 3,700
SAE "C" Spline 14,900 11,950
SAE "C" Key 10,800 10,800
Connecting Shaft 11,950

12 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MODEL MH20
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

PUMP PERFORMANCE DATA

Speed RPM 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W.
900 GPM 6.5 8 10 12 13.5
LPM 24.5 30 38 45.5 51
1200 GPM 9 11.5 14 16 18.5
LPM 34 43.5 53 60.5 70
1500 GPM 11.5 14.5 17.5 20.5 23.5
LPM 43.5 55 66 77.5 89
1800 GPM 14 18 21.5 25 29
LPM 53 68 81.5 94.5 110
2100 GPM 16.5 21 25 29.5 34
LPM 62.5 79.5 94.5 112 129
2400 GPM 19 24 29 34 39
LPM 72 91 110 129 148

MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/2" G.W. 2" G.W.
RPM 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar
A B A B A B
800 9 550 13 870 17 1150
34 6.5 49 10 64.5 13
1200 13 550 18 870 23.5 1150
49 6.5 68 10 89 13
1600 16 550 23 860 30.5 1140
60.5 6.5 87 10 115 13
2000 19.5 550 28 850 37 1125
74 6.5 106 10 140 13

A: Input Flow GPM / LPM

B: Output Torque IN / lbs Nm

GW: Gear Width

MH20 PL CHART
Shaft Style Integral Two Piece
SAE "BB" Spline 13,000 5,500
SAE "BB" Key 8,600 5,500
SAE "B" Spline 8,300 5,500
SAE "B" Key 5,700 5,500
SAE "C" Spline * *
SAE "C" Key * *
Connecting Shaft 5,500

13
MODEL MH30/31
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

MH30/31 PUMP PERFORMANCE DATA

Speed RPM 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W.
900 GPM 6.5 8 10 12 13.5
LPM 24.5 30 38 45.5 51
1200 GPM 9 11.5 14 16 18.5
LPM 34 43.5 53 60.5 70
1500 GPM 11.5 14.5 17.5 20.5 23.5

LPM 43.5 55 66 77.5 89

1800 GPM 14 18 21.5 25 29
LPM 53 68 81.5 94.5 110
2100 GPM 16.5 21 25 29.5 34
LPM 62.5 79.5 94.5 112 129
2400 GPM 19 24 29 34 39
LPM 72 91 110 129 148

MH30 MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/2" G.W. 2" G.W.
RPM 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar
A B A B A B
800 9 550 13 870 17 1150
34 6.5 49 10 64.5 13
1200 13 550 18 870 23.5 1150
49 6.5 68 10 89 13
1600 16 550 23 860 30.5 1140
60.5 6.5 87 10 115 13
2000 19.5 550 28 850 37 1125
74 6.5 106 10 140 13

MH31 MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/2" G.W. 2" G.W.
RPM 2500 psi 175 bar 2500 psi 175 bar 2500 psi 175 bar
A B A B A B
800 9 675 13 1035 17 1385
34 8 49 12 64.5 16
1200 13 685 18 1055 23.5 1410
49 8 68 12 89 16
1600 16 680 23 1030 30.5 1390
60.5 8 87 12 115 16
2000 19.5 660 28 1010 37 1370
74 7.5 106 11.5 140 16

A: Input Flow GPM / LPM

MH30/31 PL CHART
B: Output Torque IN / lbs Nm Shaft Style Integral Two Piece
GW: Gear Width SAE "BB" Spline 13,000 5,500
SAE "BB" Key 8,600 5,500
SAE "B" Spline 8,300 5,500
SAE "B" Key 5,700 5,500
SAE "C" Spline * *
SAE "C" Key * *
Connecting Shaft 5,500

14 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MODEL MH25/50/51
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

MH25/50/51 PUMP PERFORMANCE DATA

Speed RPM 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W. 2 1/4" G.W. 2 1/2" G.W.
900 GPM 8.5 10.5 13 15 17.5 20 22
LPM 32 39.5 49 57 66 75.5 83.5
1200 GPM 12 15 18 21 24 27 30
LPM 46.5 57 68 79.5 91 102 114
1500 GPM 15 19 23 27 31 35 39
LPM 57 72 87 102 117 132 146
1800 GPM 18 23 27.5 32.5 37.5 42 47
LPM 68 87 104 123 142 159 178
2100 GPM 21.5 27 32.5 38.5 44 48.5 55
LPM 81.5 102 123 146 167 187 208
2400 GPM 25 31 37 44 51 57 63.5
LPM 94.5 117 140 167 193 216 240

MH25/50 MOTOR PERFORMANCE DATA

1" G.W. 1 1/2" G.W. 2" G.W. 2 1/2" G.W.
2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar
Speed RPM A B A B A B A B
800 10.5 670 15.5 1070 21 1450 26 1850
39.5 7.5 58.5 12.5 79.5 16.5 98.5 21.5
1200 15.5 680 22.5 1075 30.5 1450 37.5 1840
58.5 8 85 12.5 115 16.5 142 21
1600 20 670 30 1045 40 1440 49.5 1750
75.5 7.5 114 12 151 16.5 187 20
2000 25 660 37 1030 49 1415 61.5 1720
94.5 7.5 140 12 185 16.5 233 20

MH51 MOTOR PERFORMANCE DATA

1" G.W. 1 1/2" G.W. 2" G.W. 2 1/2" G.W.
2500 PS1 175 bar 2500 PSI 175 bar 2500 PSI 175 bar 2250 PSI 175 bar
Speed RPM A B A B A B A B
800 10.5 825 15.5 1310 21 1810 26 2330
39.5 9.5 58.5 15 79.5 21 98.5 27
1200 15.5 850 22.5 1340 30.5 1830 37.5 2340
58.5 10 85 15.5 115 21 142 27
1600 20 830 30 1330 40 1805 49.5 2300
75.5 9.5 114 15.5 151 21 187 26.5
2000 25 800 37 1290 49 1770 61.5 2250
94.5 9 140 15 185 20.5 233 26

MH50/51 PL CHART
Shaft Style Integral Two Piece
SAE "BB" Spline 9,900 8,000
SAE "BB" Key 6,600 6,600 A: Input Flow GPM / LPM
SAE "B" Spline 6,400 6,400
SAE "B" Key 5,750 5,750 B: Output Torque IN / lbs Nm
SAE "C" Spline 13,850 8,000 GW: Gear Width
SAE "C" Key 13,000 8,000
Connecting Shaft 8,000

15
MODEL MH37
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

PUMP PERFORMANCE DATA

Speed RPM 1" G.W. 1 1/4" G.W. 1 1/2" G.W. 1 3/4" G.W. 2" G.W. 2 1/4" G.W. 2 1/2" G.W. 3" G.W.
600 4.5 6.5 8.5 10.5 12.5 14 16.5 20
17 25 32 40 47 53 62 76
1200 12.5 16.5 20 24 28 31.5 35.5 43
47 62 76 91 106 119 134 163
1800 20 26 31.5 37.5 43.5 49.5 55 66.5
76 98 119 142 165 187 208 252
2100 24 31 37.5 44.5 51 58 64.5 78
91 117 142 168 193 219 244 295
2400 28 36 43.5 51 59 67 74.5 90
106 136 165 193 223 254 282 341

MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/2" G.W. 2" G.W. 2 1/2" G.W. 3" G.W.
RPM 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar
A B A B A B A B A B
900 10.5 750 15 1200 20 1650 24.5 2125 28 2670
40 8.5 57 13.5 76 19 93 24.5 106 30.5
1000 16 745 23 1180 31 1630 38 2115 44 2635
61 8.5 87 13.5 117 18.5 144 24 167 30
1400 21 730 31 1165 41 1610 51 2100 60 2595
79 8.5 117 13.5 155 18.5 193 24 227 30
1800 26.5 700 39 1140 52 1590 64 2075 76 2560
100 8 147 13 197 18 242 24 288 29.5

MH37 PL CHART
Shaft Style Two Piece
SAE "BB" Spline 7,750
SAE "BB" Key 5,550
SAE "B" Spline 5,050
SAE "B" Key 3,700
SAE "C" Spline 11,950
SAE "C" Key 11,950
Connecting Shaft 11,950

A: Input Flow GPM / LPM

B: Output Torque IN / lbs Nm

GW: Gear Width

16 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MODEL MH75/76
Performance data shown are the average results based on series of tests of production units and not necessarily
representative of any one unit. Tests were run with oil viscosity 150 SUS at 100°F

MH75/76 PUMP PERFORMANCE DATA

Speed RPM 1" G.W. 1 1/4" G.W 1 1/2" G.W. 1 3/4" G.W. 2" G.W. 2 1/4" G.W. 2 1/2" G.W. 2 3/4" G.W. 3" G.W.
900 11.5 15.5 19.5 23 27 30.5 34.5 38 42
43.5 58.5 74 87 102 115.5 130.5 144 159
1200 17 22 27 32 37.5 42 48 52.5 58
64.5 83.5 102 121 142 159 182 199 220
1500 22 29 35.5 41.5 48 54.5 61 67 74
83.5 110 134 157 182 206 231 254 280
1800 27.5 35.5 43.5 51 59 66 74 81.5 90
104 134 165 193 223 250 280 308 341
2100 33 42 51.5 60 69.5 78 87 96.5 106
125 159 195 227 263 295 329 365 401
2400 38 49 59.5 70 80 90 101 111 122
144 185 225 265 303 341 382 420 462

MH75 MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/2" G.W. 2" G.W. 2 1/2" 3"
RPM 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar 2000 psi 140 bar
A B A B A B A B A B
800 20.5 1050 28 1650 35.5 2200 43 2875 50.5 3625
77.5 12 106 19 134 25.5 163 33 191 42
1200 27.5 1025 38 1600 49.5 2200 60.5 2850 72 3575
104 12 144 18.5 187 25.5 229 33 273 41
1600 34 1000 49 1575 64 2175 78.5 2800 93 3500
129 11.5 185 18 242 25 297 32.5 352 40.5
2000 41.5 950 59 1550 78 2175 96.5 2750 114 3425
157 11 223 18 295 25 365 31.5 431 39.5

MH76 MOTOR PERFORMANCE DATA

Speed 1" G.W. 1 1/2" G.W. 2" G.W. 2 1/2" G.W. 3" G.W.
RPM 2500 PS1 175 bar 2500 PSI 175 bar 2500 PSI 175 bar 2500 PSI 175 bar 2500 PSI 175 bar
A B A B A B A B A B
800 20.5 1410 28 2140 35.5 2875 43 3650 50.5 4400
77.5 16 106 24.5 134 33 163 42 191 50.6
1200 27.5 1400 38 2140 49.5 2870 60.5 3650 72 4385
104 16 144 24.5 187 33 229 42 273 50.5
1600 34 1375 49 2110 64 2830 78.5 3600 93 4320
129 16 185 24.5 242 32.5 297 41.5 352 49.7
2000 41.5 1350 59 2090 78 2800 96.5 3500 114 4200
157 15.5 223 24 295 32.5 365 40.5 431 48.3

MH75/76 PL CHART
Shaft Style Integral Two Piece
A: Input Flow GPM / LPM SAE "BB" Spline 7,750 7,750
SAE "BB" Key 5,550 5,550
B: Output Torque IN / lbs Nm SAE "B" Spline 5,050 5,050
GW: Gear Width SAE "B" Key 3,700 3,700
SAE "C" Spline 8,600 7,750
SAE "C" Key 8,300 7,750
Connecting Shaft 7,750

17
SHAFT END COVERS
2 Bolt "A" Mount
Series
A B C CODE
MH15 4.19 3.25 0.44 01
MH20 4.19 3.25 0.44 94
MH25 Not Available
MH30 4.19 3.25 0.44 94
MH31 4.19 3.25 0.44 94
MH37 Not Available
MH50 Not Available
MH51 Not Available
MH75 Not Available
MH76 Not Available C
MH315 4.19 3.25 0.44 93
MH330 Not Available B
MH350 Not Available
MH365 Not Available A
Series 2 Bolt "B" Mount
A B C CODE
MH15 5.75 4.00 0.56 07
MH20 5.75 4.00 0.56 97
MH25 5.75 4.00 0.56 97
MH30 5.75 4.00 0.56 97
MH31 5.75 4.00 0.56 97
MH37 Not Available
MH50 5.75 4.00 0.56 97
MH51 5.75 4.00 0.56 97
MH75 Not Available
MH76 Not Available C
MH315 5.75 4.00 0.56 96
MH330 5.75 4.00 0.56 97
B
MH350 5.75 4.00 0.56 97
MH365 5.75 4.00 0.56 97 A
Series
A B C CODE
MH15 Not Available 2 Bolt "C" Mount
MH20 Not Available
MH25 7.125 4.999 0.69 98
MH30 Not Available
MH31 Not Available
MH37 7.125 4.999 0.69 98
MH50 7.125 4.999 0.69 98
MH51 7.125 4.999 0.69 98
MH75 7.125 4.999 0.69 98
MH76 7.125 4.999 0.69 98
MH315 Not Available
MH330 Not Available
C
MH350 7.125 4.999 0.69 98
MH365 7.125 4.999 0.69 98
B

18 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

Series SHAFT END COVERS
4 Bolt "B" Mount
A B C D CODE
MH15 3.536 3.536 3.999 0.56 12 C
MH20 3.536 3.536 3.999 0.56 42
MH25 3.536 3.536 3.999 0.56 42
MH30 3.536 3.536 3.999 0.56 42
MH31 3.536 3.536 3.999 0.56 42
MH37 3.536 3.536 3.999 0.56 42
MH50 3.536 3.536 3.999 0.56 42
MH51 3.536 3.536 3.999 0.56 42
MH75 3.536 3.536 3.999 0.56 42
MH76 3.536 3.536 3.999 0.56 42
MH315 Not Available
MH330 3.536 3.536 3.999 0.56 42
MH350 3.536 3.536 3.999 0.56 42 D
MH365 3.536 3.536 3.999 0.56 42
Series
4 Bolt "C" Mount
A B C D CODE
MH15 Not Available C
MH20 Not Available
MH25 4.508 4.508 4.999 0.56 78
MH30 4.508 4.508 4.999 0.56 78
MH31 4.508 4.508 4.999 0.56 78
MH37 4.508 4.508 4.999 0.56 78
MH50 4.508 4.508 4.999 0.56 78
MH51 4.508 4.508 4.999 0.56 78
MH75 4.508 4.508 4.999 0.56 78
MH76 4.508 4.508 4.999 0.56 78
MH315 Not Available
MH330 4.508 4.508 4.999 0.56 78
MH350 4.508 4.508 4.999 0.56 78 D
MH365 4.508 4.508 4.999 0.56 78

Series

A B C D CODE 4 Bolt "D" Mount

MH15 Not Available
MH20 Not Available C

MH25 Not Available

MH30 Not Available
MH31 Not Available
MH37 Not Available
MH50 Not Available
MH51 Not Available
MH75 6.364 6.364 5.999 0.81 80
MH76 6.364 6.364 5.999 0.81 80
MH315 Not Available
MH330 Not Available
MH350 Not Available D
MH365 Not Available

19
 SHAFT END COVER
Series
2/4 Bolt B mount
A B C D E CODE
MH15 Not Available
MH20 3.536 3.536 5.750 4.00 0.56 46
MH25 Not Available
MH30 3.536 3.536 5.750 4.00 0.56 46
MH31 3.536 3.536 5.750 4.00 0.56
MH37 Not Available
MH50 3.536 3.536 5.750 4.00 0.56 46
MH51 3.536 3.536 5.750 4.00 0.56 46
MH75 Not Available
MH76 Not Available
MH315 Not Available
MH330 3.536 3.536 5.750 4.00 0.56 46
MH350 3.536 3.536 5.750 4.00 0.56 46
MH365 Not Available

Series
2/4 Bolt C mount
A B C D E CODE
MH15 Not Available
MH20 Not Available
MH25 Not Available
MH30 Not Available
MH31 Not Available
MH37 Not Available
MH50 4.508 4.508 7.125 5.00 0.56 N/A
MH51 4.508 4.508 7.125 5.00 0.56 N/A
MH75 Not Available
MH76 Not Available
MH315 Not Available
MH330 Not Available
MH350 4.508 4.508 7.125 5.00 0.56 N/A
MH365 Not Available

20 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 SHAFT END COVERS
Pad mount
Series
A B C D CODE
MH15 Not Available
MH20 Not Available
MH25 0.69 2.00 2.00 2.50 00
MH30 0.69 2.00 2.00 2.50 00
MH31 0.69 2.00 2.00 2.50 00
MH37 .875 2.50 3.50 2.50 00
MH50 0.69 2.00 2.00 2.50 00
MH51 0.69 2.00 2.00 2.50 00
MH75 Not Available
MH76 Not Available
MH315 Not Available
MH330 Not Available
MH350 Not Available
MH365 Not Available

6 Bolt Round

Series
A B C CODE
MH15 Not Available
MH20 3.25 2.625 .44 05
MH25 4 3.148 5.625 05
MH30 3.25 2.625 .44 05
MH31 3.25 2.625 .44 05
MH37 Not Available
MH50 Not Available
MH51 Not Available
MH75 Not Available
MH76 Not Available
MH315 Not Available
MH330 Not Available
MH350 Not Available
MH365 Not Available

21
DIMENSIONAL DATA
MH15 SERIES SINGLE UNIT
3.250 .75 1.25
plus gear
w idth

15
Shaft Dimension will
change with the type
5.250
of shaft used

4.00
4.750
15 plus 50% of gear width

MH15 SERIES MULTIPLE UNIT

plus total gear width
8.500

15 4.750

add total gear width

3.250 .750 2.5 .750 1.25

15

5.250

All dimensions in inches. Unfinished

casting dimensions may vary

22 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 DIMENSIONAL DATA
MH20 SERIES SINGLE UNIT
Shaft Dimension will
change with the type
of shaft used

5.50 Width will change with

size of gear housing
20
4.50

2.94 .75 1.75

plus gear width

20

5.00

MH20 SERIES MULTIPLE UNIT

3.375
plus total gear width
plus 50% of gear width
8.690

20 5.50

add total gear width

2.94 .750 2.5 .750 1.75

20

5.00

All dimensions in inches. Unfinished

casting dimensions may vary

23
DIMENSIONAL DATA
MH25 SERIES SINGLE UNIT Shaft Dimension will
change with the type
of shaft used

Width will change with

5.44
size of gear housing
25 4.94

3.38 .75 1.75

plus gear width

25

6.25

MH25 SERIES MULTIPLE UNIT

3.755
plus total gear width
plus 50% of gear width
9.510

25 5.44

add total gear width

3.38 .750 2.88 .750 1.75

25

6.25

All dimensions in inches. Unfinished

casting dimensions may vary

24 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 DIMENSIONAL DATA

MH30 SERIES SINGLE UNIT

Shaft Dimension will
change with the type
of shaft used

Width will change with 2.94 .75 1.75

5.32 plus gear width
size of gear housing
30/31 4.81

30/31

5.38

3.315

plus 50% of gear width

MH30 SERIES MULTIPLE UNIT
plus total gear width
8.690

30/31 5.32

add total gear width

2.94 .750 2.5 .750 1.75

30/31

5.38

All dimensions in inches. Unfinished

casting dimensions may vary

25
DIMENSIONAL DATA
MH37 SERIES SINGLE UNIT Shaft Dimension will
change with the type
of shaft used

Width will change with

6.62
size of gear housing
37 5.25

3.75 1.00 1.75

plus gear w idth

37

7.31

4.250
MH37 SERIES MULTIPLE UNIT
plus 50% of gear width
plus total gear width
10.50

37
.662

add total gear width

3.75 1.00 3.00 1.00 1.75

37

7.31

All dimensions in inches. Unfinished

casting dimensions may vary

26 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 DIMENSIONAL DATA

MH50 SERIES SINGLE UNIT

Shaft Dimension will
change with the type
of shaft used

Width will change with

5.44
size of gear housing
50/51 6.94

3.38 .75 1.75

plus gear width

50/51

6.00

MH50 SERIES MULTIPLE UNIT

3.755

plus total gear width plus 50% of gear width

9.510

50/51 5.44

add total gear width

3.38 .750 2.88 .750 1.75

50/51

6.00

All dimensions in inches. Unfinished

casting dimensions may vary

27
DIMENSIONAL DATA
MH75 SERIES SINGLE UNIT Shaft Dimension will
change with the type
of shaft used

Width will change with

7.62
size of gear housing
75/76 6.12

3.75 1.00 2.00

plus gear w idth

75/76

8.00

MH75 SERIES MULTIPLE UNIT

plus total gear width 4.250
10.750
plus 50% of gear width

75/76
7.62

add total gear width

3.75 1.00 3.00 1.00 2.00

75/76

8.00

All dimensions in inches. Unfinished

casting dimensions may vary

28 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 DRIVE SHAFT DIMENSIONS
Shaft extension may change according to models

SAE A ANSI 16-4 1.38 Mtg face

.94 spline

.94 DIA

9 TOOTH SPLINE
16/32 DIAMETRAL PITCH
MAJOR DIA. .603 .609
MINOR DIA. .4835 MAX.

1.625 Mtg. face

SAE B ANSI 22-4
1.25 spline

.99 DIA

13 TOOTH SPLINE
16/32 DIAMETRAL PITCH
MAJOR DIA. .853-.858
MINOR DIA. .7335 MAX.

SAE C ANSI 32-4

2.190 MH25 = 1.50
MH50 = 1.38
MH75 = 1.75
1.38 spline MH37 = 1.62

1.25 DIA
SPLINE

14 TOOTH SPLINE
12/24 DIAMETRAL PITCH
MAJOR DIA. 1.223-1.228
MINOR DIA. 1.0627 MAX.

29
DRIVE SHAFT DIMENSIONS
SAE BB ANSI 25-4 Shaft extension may change according to models
1.81 Mtg. face

1.44 spline

SPLINE

15 TOOTH SPLINE
16/32 DIAMETRAL PITCH
MAJOR DIA. .978 -.996
MINOR DIA. .840 MAX.
SAE A ANSI 16 -1
1.38 Mtg. face

1.18

.698
.688

.94

5/8" KEYED SHAFT

SQUARE KEY .16 x .16 x .750
MAJOR DIA. .625
MINOR DIA. .624

SAE B ANSI 22-1

1.625 Mtg. face

1.31

.987
.977

.94

7/8" KEYED SHAFT

# 15 P&W KEY .250 x .375 x 1
MAJOR DIA. .875
MINOR DIA. .874

30 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 DRIVE SHAFT DIMENSIONS
Shaft extension may change according to models

SAE C ANSI 32-1

2.190 Mtg. face

1.88

1.391
1.381

1.38

1 1/4 KEYED SHAFT

# 25 P&W KEY .31 x .47 x 1.50
MAJOR DIA. 1.250
MINOR DIA. 1.248

SAE BB ANSI 25-1

1.94 Mtg. face

1.62

1.112
1.102

.94

1" KEYED SHAFT

# 21 P&W KEY .250 x .375 x 1.250
MAJOR DIA. .998
MINOR DIA. .997

31
DIMENSIONAL DATA
MH300 SERIES PUMP & MOTOR
E C F D

TOP VIEW
Model A B C D E F
MH315 5.00 4.00 1.88 1.75 1.62 .375 + GW
MH330 6.78 4.81 3.12 2.25 1.62 .5 + GW
MH350 7.69 5.75 3.50 2.25 2.19 .5 + GW
B A
MH365 8.38 6.25 3.75 2.62 2.19 .5 + GW
G W = GEAR WIDTH

SIDE VIEW
Model G H I J K L M
MH315 4.75 2.62 1.84 2.62 1.75 3.50 + GW .34
MH330 5.88 3.50 2.38 3.50 2.25 5.38 + GW .62 H
MH350 6.00 3.50 2.50 3.50 2.25 5.75 + GW .50 G
MH365 7.25 4.00 2.88 4.00 2.62 6.25 + GW .62
G W = GEAR WIDTH

FRONT VIEW M
J K
SIDE

C
CL
1”

4 BOLT B or C

TOP VIEW

CL A
2 BOLT A or B or C

32 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 BEARING SERIES PRESSURE AND DISPLACEMENT

MH20 Gear size In. 3 /rev cm. 3 /rev Max Pressure

.05 1/2" .99 16.1 3000 psi 207 bar
.07 3/4" 1.48 24.2 3000 psi 207 bar
1. 1" 1.97 32.3 3000 psi 207 bar
1.25 1 1/4" 2.46 40.4 3000 psi 207 bar
1.50 1 1/2" 2.96 48.4 3000 psi 207 bar
1.75 1 3/4" 3.45 56.5 2500 psi 172 bar
2. 2" 3.94 64.6 2500 psi 172 bar

MH30/31 Gear size In. 3 /rev cm. 3 /rev Max Pressure Max Pressure dowelled
.05 1/2" .99 16.1 2500 psi 172 bar 3000 psi 207 bar
.07 3/4" 1.48 24.2 2500 psi 172 bar 3000 psi 207 bar
1. 1" 1.97 32.3 2500 psi 172 bar 3000 psi 207 bar
1.25 1 1/4" 2.46 40.4 2500 psi 172 bar 3000 psi 207 bar
1.50 1 1/2" 2.96 48.4 2500 psi 172 bar 3000 psi 207 bar
1.75 1 3/4" 3.45 56.5 2250 psi 145 bar 2500 psi 172 bar
2. 2" 3.94 64.6 2250 psi 145 bar 2500 psi 172 bar

MH50/51 Gear size In. 3 /rev cm. 3 /rev Max Pressure Max Pressure dowelled
.05 1/2" 1.28 20.9 2500 psi 172 bar 3000 psi 207 bar
.07 3/4" 1.91 31.3 2500 psi 172 bar 3000 psi 207 bar
1. 1" 2.55 41.8 2500 psi 172 bar 3000 psi 207 bar
1.25 1 1/4" 3.19 52.2 2500 psi 172 bar 3000 psi 207 bar
1.50 1 1/2" 3.83 62.7 2500 psi 172 bar 3000 psi 207 bar
1.75 1 3/4" 4.46 73.1 2000 psi 145 bar 3000 psi 207 bar
2. 2" 5.10 83.6 2000 psi 145 bar 2500 psi 172 bar
2.25 2 1/4" 5.74 94.0 2000 psi 145 bar 2500 psi 172 bar
2.5 2 1/2" 6.38 104.5 2000 psi 145 bar 2500 psi 172 bar

MH75/76 Gear size In. 3 /rev cm. 3 /rev Max Pressure Max Pressure dowelled
.07 3/4" 3.07 50.28 2500 psi 172 bar 3000 psi 207 bar
1. 1" 4.1 67.15 2500 psi 172 bar 3000 psi 207 bar
1.25 1 1/4" 5.12 83.85 2500 psi 172 bar 3000 psi 207 bar
1.50 1 1/2" 6.15 100.7 2500 psi 172 bar 3000 psi 207 bar
1.75 1 3/4" 7.17 117.45 2500 psi 172 bar 3000 psi 207 bar
2. 2" 8.2 134.3 2500 psi 172 bar 2500 psi 172 bar
2.25 2 1/4" 9.22 151 2250 psi 155 bar 2500 psi 172 bar
2.5 2 1/2" 10.25 167.8 2250psi 155 bar 2500psi 172 bar
2.75 2 3/4" 11.275 185 2000 psi 145 bar 2000 psi 145 bar
3 3" 12.3 201 2000 psi 145 bar 2000 psi 145 bar

33
BUSHING SERIES PRESSURE & DISPLACEMENT

MH315 Gear Size In.3/rev cm.3/rev Max Pressure

.05 1/2" .62 10.2 3500 psi 241 bar
.07 3/4" .93 15.2 3500 psi 241 bar
1. 1" 1.24 20.3 3500 psi 241 bar
1.25 1 1/4" 1.55 25.4 3500 psi 241 bar
1.50 1 1/2" 1.86 30.5 3300 psi 228 bar
1.75 1 3/4" 2.17 35.6 2900 psi 200 bar
2. 2" 2.48 40.6 2500 psi 172 bar

MH330 Gear Size In.3/rev cm.3/rev Max Pressure

.05 1/2" .99 16.1 3500 psi 241 bar
.07 3/4" 1.48 24.2 3500 psi 241 bar
1. 1" 1.97 32.3 3500 psi 241 bar
1.25 1 1/4" 2.46 40.4 3500 psi 241 bar
1.50 1 1/2" 2.96 48.4 3500 psi 241 bar
1.75 1 3/4" 3.45 56.5 3250 psi 224 bar
2. 2" 3.94 64.6 3000 psi 207 bar

MH350 Gear Size In.3/rev cm.3/rev Max Pressure

.05 1/2" 1.28 20.9 3500 psi 241 bar
.07 3/4" 1.91 31.3 3500 psi 241 bar
1. 1" 2.55 41.8 3500 psi 241 bar
1.25 1 1/4" 3.19 52.2 3500 psi 241 bar
1.50 1 1/2" 3.83 62.7 3500 psi 241 bar
1.75 1 3/4" 4.46 73.1 3250 psi 224 bar
2. 2" 5.10 83.6 3000 psi 207 bar
2.25 2 1/4" 5.74 94.0 2750 psi 190 bar
2.5 2 1/2" 6.38 104.5 2500 psi 172 bar

MH365 Gear Size In.3/rev cm.3/rev Max Pressure

.07 3/4" 2.70 44.3 3500 psi 241 bar
1. 1" 3.60 59.0 3500 psi 241 bar
1.25 1 1/4" 4.50 73.8 3500 psi 241 bar
1.50 1 1/2" 5.40 88.5 3500 psi 241 bar
1.75 1 3/4" 6.30 103.3 3500 psi 241 bar
2. 2" 7.20 118.0 3500 psi 241 bar
2.25 2 1/4" 8.10 132.8 3250 psi 224 bar
2.5 2 1/2" 9.00 147.5 3000 psi 207 bar

34 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 FLOW DIVIDERS
To build an assembly code number for a flow divider
This is the code for a three section flow divider MFD50B-BY-OD12-1-E-OJ25-1-E-UD10-BY
The code letters and numbers are the same found when building codes for pumps/motors.
When selecting the correct code for the flow divider use the clockwise gear housing and end cover codes from the
pump code section for the series required.
These units are built in the 30 / 31 / 50 / 51/ 75 / 76 models
Consult the factory for codes not found in the catalog

Flow divider MFD

Series 50
Model B
1 Port End Cover blank with ext. studs BY
2 Gear Housing 1" split flange on one side OD12
3 Connecting Shaft not shown 1
4 Bearing Carrier no ports E
5 Gear Housing 1 1/4" x 1" split flange OJ25
6 Connecting Shaft not shown 1
7 Bearing Carrier no ports E
8 Gear Housing 3/4" split flange on one side UD10
9 Port End Cover blank with ext. studs BY

OUTLET

IN OUTLET

OUTLET

35
MH15 SERIES CODING
MH 15 SERIES CODING

1 15 2 3 . 4 . 5 . 6 . 7 . 8 . 9 . 6 . 7 . 10

REPEAT FOR TANDEM UNITS

1 PUMP / MOTOR
MHP PUMP
MHM MOTOR

2 UNIT
A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM WITH A CONTINENTAL SHAFT

3 SHAFT END COVER

A B
1 PUMP WITH SHAFT BEARING CLOCKWISE ROTATION
2 PUMP WITH SHAFT BEARING COUNTER CLOCKWISE ROTATION
3 PUMP WITH SHAFT BEARING DOUBLE ROTATION
9 MOTOR WITH SHAFT BEARING & 1/4" DRAIN PORT

4 SHAFT END COVER

00 PAD MOUNT
02 ROUND FLANGE 6 BOLT
O1 S.A.E. 2 BOLT "A" MOUNT
O7 S.A.E. 2 BOLT "B" MOUNT
O5 4 BOLT 3 3/4" "A" MOUNT
10 4 BOLT ROUND

5 PORT END COVER

NPT CODES ORB

SINGLE TANDEM PORT SIZE SINGLE TANDEM PORT SIZE
UNITS UNITS LEFT RIGHT A B UNITS UNITS LEFT RIGHT A B
BE BI NONE NONE N/A N/A MO MU NONE 1/2" N/A 1.25
WE WI 3/8" 3/8" 1.25 1.25 LO LU 1/2" NONE 1.25 N/A
CE CI NONE 1/2" N/A 1.25 NO NU 1/2" 1/2" 1.25 1.25
FE FI 1/2" NONE 1.25 N/A TO TU NONE 5/8" N/A 1.25
GE GI 1/2" 1/2" 1.25 1.25 SO SU 5/8" NONE 1.25 N/A
HE HI 1/2" 3/4' 1.25 1.25 VO VU 5/8" 5/8" 1.25 1.25
KE KI 3/4" 1/2" 1.25 1.25 DO DU NONE 3/4" N/A 1.25
JE JI 3/4" NONE 1.25 N/A CO CU 3/4" NONE 1.25 N/A
DE DI NONE 3/4" N/A 1.25 FO FU 3/4" 3/4" 1.25 1.25
LE LI 3/4" 3/4" 1.25 1.25 RO RU 1/2" 5/8" 1.25 1.25
VE VI 3/4" 1" 1.25 1.25 PO PU 5/8" 1/2" 1.25 1.25
TE TI 1" 3/4" 1.41 1.41 HO HU 1/2" 3/4" 1.25 1.25
NE NI 1" NONE 1.25 N/A KO KU 3/4" 1/2" 1.25 1.25
ME MI NONE 1" N/A 1.25
PE PI 1" 1" 1.25 1.25 ORIENTATION IS FROM THE SHAFT END
SE SI 1/2" 1" 1.25 1.25
RE RI 1" 1/2" 1.25 1.25

ORIENTATION IS FROM THE SHAFT END WITH SUPPORT STUDS ON REQUEST

36 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 6
NOTE
MH15 SERIES GEAR HOUSING
* N.P.T. PORTING IS NOT RECOMMENDED FOR PRESSURES ABOVE 1500 P.S.I.
* Ports marked with a X are recommended porting, for all other porting please consult the factory
* SHADED CELLS ARE GOOD FOR MOTOR UNITS
* ORIENTATION IS LOOKING FROM THE SHAFT END OF THE UNIT

NPT. PORT LEFT PORT RIGHT 5 7 10 12 15 17 20

AB NONE NONE X X X X X X X
AP 1/2" NONE X X X
AC NONE 1/2" X X X
EC 1/2" 1/2" X X X
ED 1/2" 3/4" X X X
EH 3/4" 1/2" X X X
AR 3/4" NONE X X X X X
AF NONE 3/4" X X X X X
ER 3/4" 3/4" X X X X X
ET 3/4" 1" X X X X X
EU 3/4" 1 1/4" X X
IJ 1" 3/4" X X X X
IQ 1 1/4" 3/4" X X
AT 1" NONE X X X X X
AH NONE 1" X X X X X
IL 1" 1" X X X X
IM 1" 1 1/4" * X X X
IS 1 1/4" * 1" X X X
AV 1 1/4" * NONE X X X
AJ NONE 1 1/4" * X X X
IT 1 1/4" 1 1/4" X X X

ORB. PORT LEFT PORT RIGHT 5 7 10 12 15 17 20

AB NONE NONE X X X X X X X
UC NONE 1/2" X X X
UP 1/2" NONE X X X
YC 1/2" 1/2" X X X X X
UD NONE 5/8" X X
UQ 5/8" NONE X X X X
YK 5/8" 5/8" X X
UF NONE 3/4" X X X X
UR 3/4" NONE X X X
YR 3/4" 3/4" X X X
UG NONE 7/8" X X X
US 7/8" NONE X
YZ 7/8" 7/8" X X X
YD 1/2" 5/8" X X X
YJ 5/8" 1/2" X X X
YL 5/8" 3/4" X X X X
YQ 3/4" 5/8" X X X X
YS 3/4" 7/8" X X X X
YX 7/8" 3/4" X X X

FLANGE. PORT LEFT PORT RIGHT 5 7 10 12 15 17 20

AB NONE NONE X X X X X X X
OC NONE 1/2" X X
OP 1/2" NONE X X
ZC 1/2" 1/2" X X
OF NONE 3/4" X X X X
OR 3/4" NONE X X X X
ZR 3/4" 3/4" X X X X
OH NONE 1" X X X X
OT 1" NONE X X X X
RL 1" 1" X X X X
OJ NONE 1 1/4" X X X
OV 1 1/4" NONE X X X
RT 1 1/4" 1 1/4" X X X
ZT 3/4" 1" X X X
RJ 1" 3/4" X X X
RM 1" 1 1/4" X X X
RS 1 1/4" 1" X X X
ZF 1/2" 3/4" X
ZP 3/4" 1/2" X

37
MH15 SERIES CODING
7 GEAR SIZE MH 15
8 SHAFT TYPE MH / 25 CU. IN. MAX. PSI
3 6 TOOTH SPLINE .997 MAJ. DIA. X 2 1/2" EXT 05 .69 2000 PSI
12 S.A.E. "C" 14 TOOTH SPLINE 1.250" DIA 07 1.07 2000 PSI
11 1. DIA KEYED SHAFT
10 1.38 2000 PSI
25 1.250 DIA KEYED SHAFT
12 1.73 2000 PSI
15 2.08 2000 PSI
17 2.42 2000 PSI
20 2.7 2000 PSI

9 BEARING CARRIERS FOR 15 UNIT

N.P.T. cw ccw S.A.E. O RING cw ccw
IN OUT LEFT RIGHT IN OUT LEFT RIGHT

NONE NONE B B 1 1/2" NONE TH

NONE 1 1/2" TM

1 1/2" NONE TL
NONE 1 1/2" TJ 1 1/2" 1" TK
1" 1 1/2" TN

1 1/2" 1" XS
1" 1 1/2" XT 1" 1" QD QD

1" 1" DH DH 1 1/4" 1 1/4" NV NV

1 1/4" 1 1/4" BF BF
10 CONNECTING SHAFT USE CODE #1 FOR ALL
MULTIPLE UNITS

38 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH20 SERIES CODING
1 20 2 3 4 5 6 7 8 9 6 7 10

1 PUMP / MOTOR REPEAT FOR TANDEM UNITS

MHP PUMP
MHM MOTOR

2 UNIT
A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM WITH A CONTINENTAL SHAFT

3 SHAFT END COVER

1 PUMP WITHOUT SHAFT BEARING CLOCKWISE ROTATION
2 PUMP WITHOUT SHAFT BEARING COUNTER CLOCKWISE ROTATION
3 PUMP WITHOUT SHAFT BEARING DOUBLE ROTATION
4 PUMP WITH SHAFT BEARING CLOCKWISE ROTATION
5 PUMP WITH SHAFT BEARING COUNTER CLOCKWISE ROTATION
6 PUMP WITH SHAFT BEARING DOUBLE ROTATION
8 MOTOR WITH SHAFT BEARING & 1/4" DRAIN PORT
9 MOTOR WITHOUT SHAFT BEARING & 1/4" DRAIN PORT

4 SHAFT END COVER

27 4 BOLT CLOVERLEAF MOUNT TYPE 2
42 S.A.E. 4 BOLT "B" MOUNT TYPE 1
46 S.A.E. 2 & 4 BOLT "B" MOUNT TYPE 1
94 S.A.E. 2 BOLT "A" MOUNT TYPE 1
96 S.A.E. 2 BOLT "B" MOUNT TYPE 2
97 S.A.E. 2 BOLT "B" MOUNT TYPE 1
5 PORT END COVER
CODES
"O" RING PORTS SINGLE TANDEM PORT SIZE A B
UNITS UNITS LEFT RIGHT A B

CE CY CI CY 3/4' NONE N/A 1.4

DE DY DI DY NONE 3/4' 1.4 N/A
FE FY FI FY 3/4' 3/4' 1.4 1.4
GE GY GI GY 1" 3/4' 1.4 1.4
HE HY HI HY 3/4' 1" 1.4 1.4
JE JY JI JY 1" 1" 1.4 1.4
MA YO MU YO 1" NONE N/A 1.4
RA RO SU RO NONE 1" 1.4 N/A

N.P.T. PORTS BE BY BI BY NONE NONE N/A N/A

KE KY KI KY 3/4" NONE N/A 1.4
LE LY LI LY NONE 3/4" 1.4 N/A
ME MY MI MY 3/4" 3/4" 1.4 1.4
QU QQ QO QQ 1" 1" 1.4 1.4
ORIENTATION IS FROM THE
AI AI 3/4" 1" 1.4 1.4 SHAFT END
EI EI 1" 3/4" 1.4 1.4

WITH SUPPORT STUDS

WITHOUT SUPPORT STUDS

39
MH20 SERIES GEAR HOUSING PORTS

NOTE
* N.P.T. PORTING IS NOT RECOMMENDED FOR PRESSURES ABOVE 1500 P.S.I.
* Ports marked with a “X” are recommended porting, for all other porting please consult the factory
* SHADED CELLS ARE GOOD FOR MOTOR UNITS
* ORIENTATION IS VIEWED FROM THE SHAFT END

NPT.CODE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
IL 1/2" NONE X X X
IM NONE 1/2" X X X
IR 1/2" 1/2" X X
IC 3/4" NONE X X X X X X
ID NONE 3/4" X X X X X X
IF 3/4" 3/4" X X X X X X
IG 3/4" 1" X X X X X
IH 3/4" 1 1/4" X X
IJ 1" 3/4" X X X X X
IK 1 1/4" 3/4" X X
YC 1" NONE X X X X X
YD NONE 1" X X X X X
YF 1" 1" X X X X X
YG 1" 1 1/4" * X X X X
YH 1" 1 1/2" X X X
YJ 1 1/4" * 1" X X X
YK 1 1/2" 1" X X X
IA 1 1/4" * NONE X X X
IB NONE 1 1/4" * X X X
YL 1 1/4" 1 1/4" X X X

BSPP.CODE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
YN 3/4" NONE X X X X X X
YQ NONE 3/4" X X X X X X
YS 3/4" 3/4" X X X X
YT 3/4" 1" X X
YU 3/4" 1 1/4" X X
YV 1" 3/4" X X X X
YW 1 1/4" 3/4" X X
SL 1" NONE X X X X
RQ NONE 1" X X X X
MP 1" 1" X X X
VY 1" 1 1/4" * X X X
IX 1 1/4" * 1" X X X
NJ 1 1/4" * NONE X X
UI NONE 1 1/4" * X X
PF 1 1/4" 1 1/4" X

40 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH20 SERIES GEAR HOUSING PORTS
O.D TUBE. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20
AB NONE NONE X X X X X X X
EC 3/4" NONE X X X X X X
ED NONE 3/4" X X X X X X
EF 3/4" 3/4" X X X X X X
EG 3/4" 1" X X X X X
EH 3/4" 1 1/4" X X X X
IN 3/4" 1 1/2" X X
EJ 1" 3/4" X X X X X
EK 1 1/4" 3/4" X X X X
IP 1 1/2" 3/4" X X
EZ 7/8" NONE X
EL 7/8" 1" X
EM 1" 7/8" X
AC 1" NONE X X X X X
AD NONE 1" X X X X X
AF 1" 1" X X X X
AG 1" 1 1/4" * X X X X
AH 1" 1 1/2" * X X
AJ 1 1/4" * 1" X X X X
AK 1 1/2" * 1" X X
AA 1 1/4" * NONE X X X X
AO NONE 1 1/4" * X X X X
AL 1 1/4" 1 1/4" X X X
AM 1 1/4" 1 1/2" * X X
AP 1 1/2" * 1 1/4" X X
AE 1 1/2" * NONE X X
AU NONE 1 1/2" * X X

SPLIT FLANGE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
UC 3/4" NONE X X X X X X
UD NONE 3/4" X X X X X X
UF 3/4" 3/4" X X X X X
UG 3/4" 1" X X X X X
UH 3/4" 1 1/4" X X X X
UJ 1" 3/4" X X X X X
UK 1 1/4" 3/4" X X X X
OC 1" NONE X X X X
OD NONE 1" X X X X
OF 1" 1" X X X X X
OG 1" 1 1/4" * X X X X
OH 1" 1 1/2" * X X
OJ 1 1/4" * 1" X X X X
OK 1 1/2" * 1" X X
OA 1 1/4" * NONE X X X X
OB NONE 1 1/4" * X X X X
OL 1 1/4" 1 1/4" X X X
OM 1 1/4" 1 1/2" * X X
OP 1 1/2" * 1 1/4" X X
OE 1 1/2" * NONE X X X
OU NONE 1 1/2" * X X X

41
MH20 SERIES GEAR HOUSING PORTS
METRIC S. F. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20
AB NONE NONE X X X X X X X
VN 3/4" NONE X X X X
VQ NONE 3/4" X X X X
VS 3/4" 3/4" X X X X
VT 3/4" 1" X X X X
RV 1" 3/4" X X X X
RU 3/4" 1 1/4" X X X
RW 1 1/4" 3/4" X X X
UL 1" NONE X X X X X
UR NONE 1" X X X X X
UM 1" 1" X X X
VU 1" 1 1/4" * X X X X
UX 1 1/4" * 1" X X X X
HO 1" 1 1/2" * X X
VO 1 1/2" * 1" X X
NO 1 1/4" * NONE X X X
UO NONE 1 1/4" * X X X
PO 1 1/4" 1 1/4" X X X
QO 1 1/4" 1 1/2" * X X
SO 1 1/2" * 1 1/4" X X
UY 1 1/2" * NONE X X X
TO NONE 1 1/2" * X X X

METRIC STR. THD. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
EN 3/4" NONE X X X
TQ NONE 3/4" X X X
ES 3/4" 3/4" X X
ET 3/4" 1" X X
EV 1" 3/4" X X X X
NL 1" NONE X X X
ER NONE 1" X X X X X
CM 1" 1" X X
VE 1" 1 1/4" * X X X
EX 1 1/4" * 1" X X X
PA 1 1/4" 1 1/4" X X
QA 1 1/4" 1 1/2" * X
SA 1 1/2" * 1 1/4" X

42 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH20 SERIES CODING
7 GEAR SIZE MH 20
8 SHAFT TYPE
MH / 20 CU. IN. MAX. PSI
05 .99 3000 PSI CODE
07 1.48 3000 PSI 07 S.A.E. "C" 14 TOOTH SPLINE 1.250" dia — CONTINENTAL ONLY
10 1.97 3000 PSI 12 KEYED SHAFT .75" dia. X 1.56 KEY CONTINENTAL ONLY
12 2.46 3000 PSI 15 S.A.E. B KEYED .875" dia. WITH 5/8" -18 THREAD—CONTINENTAL ONLY
15 2.96 3000 PSI 25 S.A.E. "B" 13 TOOTH SPLINE .88" dia
17 3.45 2500 PSI 30 S.A.E. "B" KEYED .88" dia 1/4" X 3/8" X1" KEY
20 3.94 2500 PSI 43 S.A.E. B B KEYED 1" dia. 1/4" X 3/8" X 1 1/4" KEY
95 S.A.E. A 9 TOOTH SPLINE .62" dia.
65 S.A.E. "B" SPLINE TYPE 2
66 S.A.E. "B" KEYED TYPE 2
98 S.A.E. "BB" 15 TOOTH SPLINE 1" dia.

9 BEARING CARRIERS ORIENTATION IS FROM THE SHAFT END

N.P.T. S.A.E. SPLIT FLANGE
IN OUT CW CCW IN OUT CW CCW

NONE NONE C D 1" NONE LB BL

NONE NONE A J 1 1/4" NONE MB BM
1 1/2" NONE NB BN
1" NONE TB BT
1 1/4" NONE VB BV NONE 3/4" BR RB
1" 3/4" LR RL
1" 3/4" TX XT 1 1/4" 3/4" MR RM
1 1/4" 3/4" VX XV 1 1/2" 3/4" NR RN
1 1/4" 1" VZ ZV 1 1/4" 1" MS SM
1 1/2" 1" NS SN
TJ JT
1 1/4" 3/4" VJ JV 1" 3/4" LX XL
1 1/4" 1" VK KV 1 1/4" 3/4" MX XM
1 1/2" 1" KW . 1 1/2" 3/4" NX XN
1 1/4" 1" MZ ZM
1" 3/4" ZX XZ 1 1/2" 1" NZ ZN

1" 3/4" ZS SZ 1" 3/4" SR RS

S.A.E. ORING
1" 3/4" RZ ZR
1" NONE CB BC
1 1/4" NONE DB BD MOTORS ONLY
1 1/2" NONE FB BF IN OUT DUAL

NONE 3/4" JP NONE NONE B

1" 3/4" CJ JC
1 1/4" 3/4" DJ JD 1" 1" TT NPT
1 1/2" 3/4" FJ JF 1 1/4" 1 1/4" VV NPT
1 1/4" 1" DK KD 1" 1" CC SAE O RING
1 1/2" 1" FK KF 1 1/4" 1 1/4" BB SAE O RING
1 1/2" 1 1/2" FF SAE O RING
1" 3/4" CR RC 1" 1" LL SAE SPLIT FLANGE
1 1/4" 3/4" DR RD 1 1/4" 1 1/4" MM SAE SPLIT FLANGE
1 1/2" 3/4" FR RF 1 1/2" 1 1/2" NN SAE SPLIT FLANGE
1 1/4" 1" DS SD
1 1/2" 1" FS SF
10 CONNECTING SHAFT USE CODE #1 FOR ALL
1" 3/4" KJ JK MULTIPLE UNITS

1" 3/4" KX XK

43
MH25 SERIES CODING

1 25 2 3 . 4 . 5 . 6 . 7 . 8 . 9 . 6 . 7 . 10

REPEAT FOR TANDEM UNITS

1 PUMP / MOTOR
MHP PUMP
MHM MOTOR

2 UNIT
X SINGLE OR TANDEM WITH A CONTINENTAL SHAFT

3 SHAFT END COVER

1 PUMP WITH SINGLE SHAFT BEARING CLOCKWISE ROTATION TYPE 1 OR 2
2 PUMP WITH SINGLE SHAFT BEARING COUNTER CLOCKWISE ROTATION TYPE 1 OR 2
3 PUMP WITH SINGLE SHAFT BEARING DOUBLE ROTATION TYPE 1 OR 2
4 PUMP WITH DOUBLE SHAFT BEARING CLOCKWISE ROTATION TYPE 3
5 PUMP WITH DOUBLE SHAFT BEARING COUNTER CLOCKWISE ROTATION TYPE 3
6 PUMP WITH DOUBLE SHAFT BEARING DOUBLE ROTATION TYPE 3
7 MOTOR WITH SINGLE SHAFT BEARING & 1/4" DRAIN PORT TYPE 1 OR 2
8 MOTOR WITH DOUBLE SHAFT BEARING & 1/4" DRAIN PORT TYPE 3
9 MOTOR WITH SINGLE SHAFT BEARING NO DRAIN PORT TYPE 1 OR 2

4 SHAFT END COVER

00 PAD MOUNT TYPE 1 OR 3
01 MODIFIED PAD MOUNT TYPE 1
03 ROUND FLANGE 6 BOLT TYPE 1
04 ROUND FLANGE 4 BOLT 2.883 PILOT TYPE 2
05 ROUND FLANGE 6 BOLT 6.625 PILOT TYPE 2
07 ROUND FLANGE 4 BOLT 2.883 PIOLT TYPE 2 ( 58 SHAFT ONLY )
40 4 BOLT SQ. 3.249 PILOT TYPE 1
42 S.A.E. 4 BOLT "B" MOUNT TYPE 1 OR 3
43 S.A.E. 4 BOLT "B" MOUNT WITH 2 DRAINS TYPE 3
78 S.A.E. 4 BOLT "C" MOUNT TYPE 1 OR 3
95 S.A.E. 2 BOLT "B" MOUNT WITH 2 DRAINS TYPE 1 A B
97 S.A.E. 2 BOLT "B" MOUNT TYPE 1 OR 3
98 S.A.E. 2 BOLT "C" MOUNT TYPE 1

5 PORT END COVER

"O" RING PORTS CODES
SINGLE TANDEM PORT SIZE
UNITS UNITS LEFT RIGHT A B
HE HY H I HY 1/2" NONE N/A 1.38
DE DY D I DY NONE 1/2" 1.38 N/A
JE JY J I JY 1/2" 1/2" 1.38 1.38
UE UY U I UY 5/8" NONE N/A 1.38
NE NY N I NY NONE 5/8" 1.38 N/A
KE KY K I KY 3/4" NONE N/A 1.38
LE LY L I LY NONE 3/4" 1.38 N/A
ME MY M I MY 3/4" 3/4" 1.38 1.38 ORIENTATION IS FROM THE SHAFT END

WITH SUPPORT STUDS

WITHOUT SUPPORT STUDS

44 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH25 SERIES CODING

N.P.T. PORTS
BE BY BI BY NONE NONE N/A N/A
FE FY FI FY 3/4" NONE N/A 1.38
CE CY CI CY NONE 3/4" 1.38 N/A
GE GY GI GY 3/4" 3/4" 1.38 1.38

WITH SUPPORT STUDS

WITHOUT SUPPORT STUDS

METRIC STR. THREAD PORTING A B

CODES
SINGLE TANDEM PORT SIZE
UNITS UNITS LEFT RIGHT A B
EB YB I B YB 5/8" NONE N/A 1.38
EF YF I F YF NONE 5/8" 1.38 N/A
EV YV I V YV 5/8" 5/8" 1.38 1.38
EE EY E I EY 3/4" 5/8" N/A 1.38
VE VY V I VY 5/8" 3/4" 1.38 N/A
TE TY T I TY 3/4" NONE N/A 1.38
WE WY W I WY NONE 3/4" 1.38 N/A
XE XY X I XY 3/4" 3/4" 1.38 1.38
B.S.P.P. RING PORTS
AE AY A I AY 3/4" NONE N/A 1.38
QE QY Q I QY NONE 3/4" 1.38 N/A
SE SY S I SY 3/4" 3/4" 1.38 1.38 ORIENTATION IS FROM THE SHAFT END

WITH SUPPORT STUDS

WITHOUT SUPPORT STUDS

BSPP. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
EM NONE 3/4" X X X
EA 3/4" NONE X X X
EJ 3/4" 3/4" X X X X X X
EK 3/4" 1" X X
YU 3/4" 1 1/4" X X X X
EN 1" 3/4" X X
YW 1 1/4" 3/4" X X X X
EP 1" NONE X X X
IH NONE 1" X X X
EQ 1" 1" X X X X X
ES 1" 1 1/4" * X
IR 1 1/4" * 1" X X X X X
ID 1 1/2" 1" X
NJ 1 1/4" * NONE X X X
JB NONE 1 1/4" * X
IE 1 1/4" 1 1/4" X
IQ 1 1/4" 1 1/2" * X
IS 1 1/2" 1 1/4" X
JV 1 1/2" 1 1/2" X

45
MH25 SERIES GEAR HOUSING PORTS
NOTE
* N.P.T. PORTING IS NOT RECOMMENDED FOR PRESSURES ABOVE 1500 P.S.I.
* Ports marked with a “X” are recommended porting, for all other porting please consult the factory
* SHADED CELLS ARE GOOD FOR MOTOR UNITS
* ORIENTATION IS VIEWED FROM THE SHAFT END
* ( * ) LOW PRESSURE PORTING

PORT
NPT. PORT LEFT RIGHT 05 07 10 12 15 17 20 22 25
AB NONE NONE X X X X X X X X X
AP 1/2" NONE X
AC NONE 1/2" X
EC 1/2" 1/2" X X
ED 1/2" 3/4" X
EH 3/4" 1/2" X
AR 3/4" NONE X X X X X X
AF NONE 3/4" X X X X X X
ER 3/4" 3/4" X X X X X X X
ET 3/4" 1" X X X X X X X
EU 3/4" 1 1/4" X X X
IJ 1" 3/4" X X X X X X X
IQ 1 1/4" 3/4" X X X
AT 1" NONE X X X X X X X
AH NONE 1" X X X X X X X
IL 1" 1" X X X X X X X
IM 1" 1 1/4" * X X X X X
IS 1 1/4" * 1" X X X X X
IY 1 1/2" 1" X X X
AV 1 1/4" * NONE X X X X
AJ NONE 1 1/4" * X X X X
IT 1 1/4" 1 1/4" X X X X
IU 1 1/4" 1 1/2" * X X X
IZ 1 1/2" 1 1/4" X X X
JC 1 1/2" 1 1/2" X X
AW 1 1/2" * NONE X X X
AK NONE 1 1/2" * X X

46 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH25 SERIES GEAR HOUSING PORTS

ORB PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
UP 1/2" NONE X X X
UC NONE 1/2" X X X
YC 1/2" 1/2" X X X X
YD 1/2" 5/8" X X X
YJ 5/8" 1/2" X X X
UQ 5/8" NONE X X X
UD NONE 5/8" X X X
YK 5/8" 5/8" X X X X
YL 5/8" 3/4" X X X X
YQ 3/4" 5/8" X X X X
UR 3/4" NONE X X X X
UF NONE 3/4" X X X X
YR 3/4" 3/4" X X X X X X X
YS 3/4" 7/8" X
YT 3/4" 1" X
YX 7/8" 3/4" X
VJ 1" 3/4" X
US 7/8" NONE X X X X X X
UG NONE 7/8" X X X X X X
YZ 7/8" 7/8" X X X X X X
VC 7/8" 1" X X X X X X
VK 1" 7/8" X X X X X X
UT 1" NONE X X X X X X
UH NONE 1" X X X X X X
VL 1" 1" X X X X X X
VM 1" 1 1/4" * X X X X X
VN 1" 1 1/2" * X
VS 1 1/4" 1" X X X X X
VG 1 1/2" * 1" X
UV 1 1/4" NONE X X X
UJ NONE 1 1/4" X X X
VT 1 1/4" 1 1/4" X X X
VU 1 1/4" 1 1/2" X X X
VZ 1 1/2" 1 1/4" X X X
UW 1 1/2" NONE X
UK NONE 1 1/2" X
WC 1 1/2" 1 1/2" X

METRIC S.F. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
ZQ 1" 1" X
ZS 1" 1 1/4" X
ZD 1 1/2" 1" X
ZE 1 1/4" 1 1/4" X
OA 1 1/4" 1 1/2" X
RF 1 1/2" * 1 1/4" X
RW NONE 1 1/2" * X
RV 1 1/2" 1 1/2" X
RG 1 1/2" 2" * X

47
MH25 SERIES GEAR HOUSING PORTS
SPLIT FLANGE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25
AB NONE NONE X X X X X X X X X
OP 1/2" NONE X X
OC NONE 1/2" X X
ZC 1/2" 1/2" X
ZF 1/2" 3/4" X X X X X
ZP 3/4" 1/2" X X X X X
OR 3/4" NONE X X X X X X
OF NONE 3/4" X X X X X X
ZR 3/4" 3/4" X X X X X X X
ZT 3/4" 1" X X X X X X
ZU 3/4" 1 1/4" * X X X X X
RJ 1" 3/4" X X X X X X
RQ 1 1/4" * 3/4" X X X X X
OT 1" NONE X X X X X X X
OH NONE 1" X X X X X X X
RL 1" 1" X X X X X X
RM 1" 1 1/4" * X X X X X X
RN 1" 1 1/2" * X X X X X
OS 1" 2" X X
RS 1 1/4" * 1" X X X X X X
RY 1 1/2" * 1" X X X X X
OZ 2" 1" X X
OV 1 1/4" * NONE X X X X X X
OJ NONE 1 1/4" * X X X X X X
RT 1 1/4" 1 1/4" X X X X X
RU 1 1/4" 1 1/2" * X X X X X
RX 1 1/4" 2" * X X X
RZ 1 1/2" * 1 1/4" X X X X X
SG 2" * 1 1/4" X X X
OW 1 1/2" * NONE X X X X X
OK NONE 1 1/2" * X X X X X
SC 1 1/2" 1 1/2" X X X X
SD 1 1/2" 2" * X X X
SH 2" * 1 1/2" X X X
OX 2" * NONE X
OL NONE 2" * X

48 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH25 SERIES GEAR HOUSING PORTS
7
8 SHAFT TYPE
MH / 25 CU. IN. MAX. PSI
CODE
07 1.91 2500 PSI
3 6 TOOTH SPLINE 1.1096 MAJ. DIA. X 2 1/8" EXT. - TYPE 1
10 2.55 2500 PSI
7 S.A.E. "C" 14 TOOTH SPLINE 1.250" dia - TYPE 1
12 3.19 2500 PSI
11 S.A.E "C" KEYED - TYPE 1 - 1.250”
15 3.83 2500 PSI
25 S.A.E. "B" 13 TOOTH SPLINE .88" dia - TYPE 1
17 4.46 2000 PSI
30 S.A.E. "B" KEYED .88" dia 1/4" X 3/8" X1" KEY - TYPE 1
20 5.10 2000 PSI
38 .8745 DIA. KEYED 1 7/16" EXT X 1 1/4" KEYED - TYPE 1
22 5.74 2000 PSI
39 .8745 DIA. KEYED 2 15/16" EXT - TYPE 1
25 6.38 2000 PSI
43 S.A.E. B B KEYED 1" dia. 1/4" X 3/8" X 1 1/4" KEYED - TYPE 1
45 .8745 DIA. KEYED 2 13/32" EXT. X 1 1/4" KEYED - TYPE 2
47 .9996 DIA. KEYED X 1 1/4" KEYED - TYPE 2
48 S.A.E. "B" 13 TOOTH SPLINE - TYPE 2 - .875”
53 S.A.E. "C" 14 TOOTH SPLINE - TYPE 2 - 1.250”
61 1.250 DIA KEYED X 1 1/2" KEYED - TYPE 2
73 1. 249 DIA KEYED DRILLED & TAPPED X 1 1/2" - TYPE 3
76 .999 DIA KEYED GROOVED X 1 1/2" KEYED - TYPE 3

9 BEARING CARRIERS FOR 25 UNIT ORIENTATION IS FROM THE SHAFT END

N.P.T. S.A.E. O RING
IN OUT LEFT RIGHT IN OUT LEFT RIGHT

NONE NONE B B 1 1/2" NONE TH

NONE 1 1/2" TM
1 1/2" NONE TL
NONE 1 1/2" TJ 1 1/2" 1" TK
1" 1 1/2" TN
1 1/2" 1" XS
1" 1 1/2" XT 1" 1" QD QD

1" 1" DH DH 1 1/4" 1 1/4" NV NV

1 1/4" 1 1/4" BF BF
S.A.E. SPLIT FLANGE MOTORS ONLY
IN OUT DUAL
1 1/2" NONE FB
NONE 1 1/2" FT NONE NONE B

1 1/2" 1" XV 1" 1" TT NPT

1" 1 1/2" XW 1 1/4" 1 1/4" VV NPT
1 1/2" 1 1/2" WW NPT
1" 1" LP LP 1" 1" CC SAE O RING
1 1/4" 1 1/4" BB SAE O RING
1 1/4" 1 1/4" GL GL 1 1/2" 1 1/2" FF SAE O RING
1" 1" LL SAE SPLIT FLANGE
1 1/4" 1 1/4" MM SAE SPLIT FLANGE

10 CONNECTING SHAFT USE CODE #1 FOR ALL

MULTIPLE UNITS

49
MH30/31 SERIES CODING
1 30 31 2 3 4 5 6 7 8 9 6 7 10

1 PUMP / MOTOR REPEAT FOR TANDEM UNITS

MHP PUMP
MHM MOTOR A B
2 UNIT
A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM WITH A CONTINENTAL SHAFT
3 SHAFT END COVER
1 PUMP WITHOUT SHAFT BEARING CLOCKWISE ROTATION
2 PUMP WITHOUT SHAFT BEARING COUNTER CLOCKWISE ROTATION
3 PUMP WITHOUT SHAFT BEARING DOUBLE ROTATION
4 PUMP WITH SHAFT BEARING CLOCKWISE ROTATION
5 PUMP WITH SHAFT BEARING COUNTER CLOCKWISE ROTATION
6 PUMP WITH SHAFT BEARING DOUBLE ROTATION
8 MOTOR WITH SHAFT BEARING & 1/4" DRAIN PORT
9 MOTOR WITHOUT SHAFT BEARING & 1/4" DRAIN PORT
4 SHAFT END COVER
ORIENTATION IS FROM THE SHAFT END
00 PAD MOUNT
05 6 BOLT FLANGE 3.25" DIA. BOLT CIRCLE
5 PORT END COVER CODES
42 S.A.E. 4 BOLT "B" MOUNT
"O" RING PORTS
78 S.A.E. 4 BOLT "C" MOUNT
SINGLE TANDEM PORT SIZE
91 31/51 PIGGY BACK MOUNT
UNITS UNITS LEFT RIGHT A B
92 76/31 PIGGY BACK MOUNT
GU GU 1 1/4 1 1.38 1.38
94 S.A.E. 2 BOLT "A" MOUNT
HU HU 1 1 1/4 1.38 1.38
96 S.A.E. 2 BOLT "B" MOUNT type 2
TU TU 1 1/4 1 1.38 1.38
97 S.A.E. 2 BOLT "B" MOUNT
XU XU 1 1 1/4 1.38 1.38

SINGLE TANDEM PORT SIZE

UNITS UNITS LEFT RIGHT A B
CE CY CI CY 3/4' NONE N/A 1.25
CA CO CU CO 3/4' NONE N/A 1.38
DE DY DI DY NONE 3/4' 1.25 N/A
DA DO DU DO NONE 3/4' 1.25 N/A
FE FY FI FY 3/4' 3/4' 1.25 1.25
JA BO JU BO 3/4' 3/4' 1.38 1.38
GE GY GI GY 1" 3/4' 1.25 1.38
KA KU 1" 3/4' 1.38 1.38
HE HY HI HY 3/4' 1" 1.38 1.25
LA LU 3/4' 1" 1.38 1.38
MA YO MU YO 1" NONE N/A 1.38
RA RO SU RO NONE 1" 1.38 N/A
JE JY JI JY 1" 1" 1.38 1.38
ZA ZO ZU ZO 1" 1" 1.38 1.38

FOR LARGER PORTING N.P.T. PORTS

CONSULT THE FACTORY BE BY BI BY NONE NONE N/A N/A
KE KY KI KY 3/4" NONE N/A 1.25
LE LY LI LY NONE 3/4" 1.25 N/A
ME MY MI MY 3/4" 3/4" 1.25 1.25

WITH SUPPORT STUDS

WITHOUT SUPPORT STUDS

50 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH30/31 SERIES GEAR HOUSING PORTS

NOTE
* N.P.T. PORTING IS NOT RECOMMENDED FOR PRESSURES ABOVE 1500 P.S.I.
* Ports marked with a “X” are recommended porting, for all other porting please consult the factory
* SHADED CELLS ARE GOOD FOR MOTOR UNITS
* ORIENTATION IS VIEWED FROM THE SHAFT END

NPT.CODE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
IL 1/2" NONE X X
IM NONE 1/2" X X
IR 1/2" 1/2" X X
IC 3/4" NONE X X X X X
ID NONE 3/4" X X X X X
IF 3/4" 3/4" X X X X X
IG 3/4" 1" X X X X
IH 3/4" 1 1/4" X X
IJ 1" 3/4" X X X X
IK 1 1/4" 3/4" X X
YC 1" NONE X X X X
YD NONE 1" X X X X
YF 1" 1" X X X
YG 1" 1 1/4" * X X X
YH 1" 1 1/2" X X X
YJ 1 1/4" * 1" X X X
YK 1 1/2" 1" X X X
IA 1 1/4" * NONE X X X
IB NONE 1 1/4" * X X X
YL 1 1/4" 1 1/4" X X
YM 1 1/4" 1 1/2" * X
YP 1 1/2" 1 1/4" X
YA 1 1/2" * NONE X
YB NONE 1 1/2" * X

BSPP.CODE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
YN 3/4" NONE X X X X X X
YQ NONE 3/4" X X X X X X
YS 3/4" 3/4" X X X X
YT 3/4" 1" X X
YU 3/4" 1 1/4" X X
YV 1" 3/4" X X X X
YW 1 1/4" 3/4" X X
SL 1" NONE X X X X
RQ NONE 1" X X X X
MP 1" 1" X X X
VY 1" 1 1/4" * X X X
IX 1 1/4" * 1" X X X
NJ 1 1/4" * NONE X X
UI NONE 1 1/4" * X X
PF 1 1/4" 1 1/4" X

51
MH30/31 SERIES GEAR HOUSING PORTS
O.D TUBE. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20
AB NONE NONE X X X X X X X
EC 3/4" NONE X X X X
ED NONE 3/4" X X X X
EF 3/4" 3/4" X X X X X
EG 3/4" 1" X X X X X
EH 3/4" 1 1/4" X X
IN 3/4" 1 1/2" X
EJ 1" 3/4" X X X X X
EK 1 1/4" 3/4" X X
IP 1 1/2" 3/4" X
EZ 7/8" NONE X
EL 7/8" 1" X X
EM 1" 7/8" X X
AC 1" NONE X X X X X
AD NONE 1" X X X X X
AF 1" 1" X X X
AG 1" 1 1/4" * X X X
AH 1" 1 1/2" * X X
AJ 1 1/4" * 1" X X X
AK 1 1/2" * 1" X X
AA 1 1/4" * NONE X X X
AO NONE 1 1/4" * X X X
AL 1 1/4" 1 1/4" X X
AM 1 1/4" 1 1/2" * X X
AP 1 1/2" * 1 1/4" X X
AE 1 1/2" * NONE X X
AU NONE 1 1/2" * X X

SPLIT FLANGE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
UC 3/4" NONE X X X X
UD NONE 3/4" X X X X
UF 3/4" 3/4" X X X X
UG 3/4" 1" X X X X
UH 3/4" 1 1/4" X X X X
UJ 1" 3/4" X X X X X
UK 1 1/4" 3/4" X X X X
OC 1" NONE X X X
OD NONE 1" X X X X
OF 1" 1" X X X X X
OG 1" 1 1/4" * X X X X
OH 1" 1 1/2" * X X
OJ 1 1/4" * 1" X X X X
OK 1 1/2" * 1" X X
OA 1 1/4" * NONE X X X X
OB NONE 1 1/4" * X X X X
OL 1 1/4" 1 1/4" X X X
OM 1 1/4" 1 1/2" * X X
OP 1 1/2" * 1 1/4" X X
OE 1 1/2" * NONE X X
OU NONE 1 1/2" * X X

52 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH30/31 SERIES GEAR HOUSING PORTS
METRIC S. F. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20
AB NONE NONE X X X X X X X
VN 3/4" NONE X X X X
VQ NONE 3/4" X X X X
VS 3/4" 3/4" X X X X
VT 3/4" 1" X X X X
RV 1" 3/4" X X X X
RU 3/4" 1 1/4" X X X
RW 1 1/4" 3/4" X X X
UL 1" NONE X X X X X
UR NONE 1" X X X X X
UM 1" 1" X X X
VU 1" 1 1/4" * X X X X
UX 1 1/4" * 1" X X X X
HO 1" 1 1/2" * X X
VO 1 1/2" * 1" X X
NO 1 1/4" * NONE X X X
UO NONE 1 1/4" * X X X
PO 1 1/4" 1 1/4" X X X
QO 1 1/4" 1 1/2" * X X
SO 1 1/2" * 1 1/4" X X
UY 1 1/2" * NONE X X
TO NONE 1 1/2" * X X

METRIC STR. THD. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20

AB NONE NONE X X X X X X X
EN 3/4" NONE X X X
TQ NONE 3/4" X X X
ES 3/4" 3/4" X X
ET 3/4" 1" X X
EV 1" 3/4" X X X X
NL 1" NONE X X X
ER NONE 1" X X X X X
CM 1" 1" X X

VE 1" 1 1/4" * X X X
EX 1 1/4" * 1" X X X
PA 1 1/4" 1 1/4" X X
QA 1 1/4" 1 1/2" * X
SA 1 1/2" * 1 1/4" X

The width of the gear housing listed below 5.32

Gear size Housing size

1/2" Gear Size 1.25
3/4" Gear Size 1.50
1" Gear Size 1.75
1 1/4" Gear Size 2.00
1 1/2" Gear Size 2.25 5.3
1 3/4" Gear Size 2.50
2" Gear Size 2.75

53
MH30/31 SERIES CODING
8 SHAFT TYPE
7 GEAR SIZE MH 30 / 31
CODE
30 31
07 S.A.E. "C" 14 TOOTH SPLINE 1.250" dia - CONTINENTAL ONLY
MH 30/31 CU. IN. MAX. PSI MAX. PSI
12 KEYED SHAFT .75" dia. X 1.56 KEY CONTINENTAL ONLY
05 .99 2500 PSI 3000 PSI
15 S.A.E. B KEYED .875" dia. WITH 5/8" -18 THREAD - CONTINENTAL ONLY
07 1.48 2500 PSI 3000 PSI
25 S.A.E. "B" 13 TOOTH SPLINE .88" dia
10 1.97 2500 PSI 3000 PSI
30 S.A.E. "B" KEYED .88" dia 1/4" X 3/8" X1" KEY
12 2.46 2500 PSI 3000 PSI
43 S.A.E. B B KEYED 1" dia. 1/4" X 3/8" X 1 1/4" KEY
15 2.96 2500 PSI 3000 PSI
65 S.A.E. "B" 13 TOOTH SPLINE .875" dia TYPE 2
17 3.45 2250 PSI 2500 PSI
66 S.A.E. "B" KEYED .88" dia 1/4" X 3/8" X1" KEY TYPE 2
20 3.94 2250 PSI 2500 PSI
67 S.A.E. B B KEYED 1" dia. 1/4" X 3/8" X 1 1/4" KEY TYPE 2
68 6 TOOTH SPLINE 1" dia.
95 S.A.E. A 9 TOOTH SPLINE .62" dia.
98 S.A.E. B B 15 TOOTH SPLINE 1" dia.

9 BEARING CARRIERS ORIENTATION IS FROM THE SHAFT END

N.P.T. S.A.E. SPLIT FLANGE
IN OUT CW CCW IN OUT CW CCW

NONE NONE C D 1" NONE LB BL

NONE NONE A J 1 1/4" NONE MB BM
1 1/2" NONE NB BN
1" NONE TB BT
1 1/4" NONE VB BV NONE 3/4" BR RB
1" 3/4" LR RL
1" 3/4" TX XT 1 1/4" 3/4" MR RM
1 1/4" 3/4" VX XV 1 1/2" 3/4" NR RN
1 1/4" 1" VZ ZV 1 1/4" 1" MS SM
1 1/2" 1" NS SN
TJ JT
1 1/4" 3/4" VJ JV 1" 3/4" LX XL
1 1/4" 1" VK KV 1 1/4" 3/4" MX XM
1 1/2" 1" KW . 1 1/2" 3/4" NX XN
1 1/4" 1" MZ ZM
1" 3/4" ZX XZ 1 1/2" 1" NZ ZN

1" 3/4" ZS SZ 1" 3/4" SR RS

S.A.E. ORING
1" 3/4" RZ ZR
1" NONE CB BC
1 1/4" NONE DB BD MOTORS ONLY
1 1/2" NONE FB BF IN OUT DUAL

NONE 3/4" JP NONE NONE B

1" 3/4" CJ JC
1 1/4" 3/4" DJ JD 1" 1" TT NPT
1 1/2" 3/4" FJ JF 1 1/4" 1 1/4" VV NPT
1 1/4" 1" DK KD 1" 1" CC SAE O RING
1 1/2" 1" FK KF 1 1/4" 1 1/4" BB SAE O RING
1 1/2" 1 1/2" FF SAE O RING
1" 3/4" CR RC 1" 1" LL SAE SPLIT FLANGE
1 1/4" 3/4" DR RD 1 1/4" 1 1/4" MM SAE SPLIT FLANGE
1 1/2" 3/4" FR RF 1 1/2" 1 1/2" NN SAE SPLIT FLANGE
1 1/4" 1" DS SD
1 1/2" 1" FS SF
10 CONNECTING SHAFT USE CODE #1 FOR ALL
1" 3/4" KJ JK MULTIPLE UNITS

1" 3/4" KX XK FOR PIGGYBACK UNITS CONTACT PRODUCT SUPPORT

54 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH37 SERIES CODING
1 37 2 3 4 5 6 7 8 9 6 7 10

REPEAT FOR TANDEM UNITS

1 PUMP / MOTOR
MHP PUMP
MHM MOTOR

2 UNIT
X SINGLE OR TANDEM WITH A CONTINENTAL SHAFT

3 SHAFT END COVER

1 PUMP WITH SINGLE SHAFT BEARING CLOCKWISE ROTATION
2 PUMP WITH SINGLE SHAFT BEARING COUNTER CLOCKWISE ROTATION
3 PUMP WITH SINGLE SHAFT BEARING DOUBLE ROTATION
7 MOTOR WITH SINGLE SHAFT BEARING & 1/4" DRAIN PORT
8 MOTOR WITH DOUBLESHAFT BEARING & 1/4" DRAIN PORT
9 MOTOR WITH SINGLESHAFT BEARING NO DRAIN PORT

4 SHAFT END COVER

11 PAD MOUNT
42 S.A.E. 4 BOLT "B" MOUNT DRAIN
45 S.A.E. 4 BOLT "B" MOUNT DRAIN
78 S.A.E. 4 BOLT "C" MOUNT
81 ROUND FLANGE 6 BOLT 3.999 PILOT
98 S.A.E. 2 BOLT "C" MOUNT

5 PORT END COVER CODES

A B
N.P.T. PORTS
SINGLE TANDEM PORT SIZE VIEW FROM S.E.C.

UNITS UNITS LEFT RIGHT A B

BA BI BY BU NONE NONE N/A N/A
CA CI CY CU NONE 3/4" 1.43 N/A
FA FI FY FU 3/4" NONE N/A 1.43
GA GI GY GU 3/4" 3/4" 1.43 1.43
DA DI DY DU NONE 1" 1.43 N/A
JA JI JY JU 1" NONE N/A 1.43
KA KI KY KU 1" 3/4" 1.43 1.43
HA HI HY HU 3/4" 1" 1.43 1.43
LA L I LY LU 1" 1" 1.43 1.43
"O"RING PORTS
MA M I MY MU 3/4" 3/4" 1.43 1.43
NA N I NY NU NONE 3/4" 1.43 N/A
PA PI PY PU 3/4" NONE N/A 1.43

ORIENTATION IS FROM THE SHAFT END

WITH SUPPORT STUDS

WITHOUT SUPPORT STUDS

55
MH37 SERIES N.P.T. PORTS
NOTE
* N.P.T. PORTING IS NOT RECOMMENDED FOR PRESSURES ABOVE 1500 P.S.I.
* Ports marked with a “X” are recommended porting, for all other porting please consult the factory
* SHADED CELLS ARE GOOD FOR MOTOR UNITS
* ORIENTATION IS VIEWED FROM THE SHAFT END

PORT
NPT. PORT LEFT RIGHT 05 07 10 12 15 17 20 22 25 30
AB NONE NONE X X X X X X X X X
EC 1/2" 1/2" X X X
AR 3/4" NONE X X X X X
AF NONE 3/4" X X X X X
ER 3/4" 3/4" X X X X X X X X X
ET 3/4" 1" X X X X X X X X
EU 3/4" 1 1/4" X X X X X X
IJ 1" 3/4" X X X X X X X X
IQ 1 1/4" 3/4" X X X X X X
AT 1" NONE X X X X X X X X
AH NONE 1" X X X X X X X X
IL 1" 1" X X X X X X X X
IM 1" 1 1/4" * X X X X X X
IN 1" 1 1/2" X X X X
IS 1 1/4" * 1" X X X X X X
IY 1 1/2" 1" X X X X
AV 1 1/4" * NONE X X X X X X
AJ NONE 1 1/4" * X X X X X X
IT 1 1/4" 1 1/4" X X X X X X
IU 1 1/4" 1 1/2" * X X X X
IZ 1 1/2" 1 1/4" X X X X
JC 1 1/2" 1 1/2" X X X X
AW 1 1/2" * NONE X X X
AK NONE 1 1/2" * X X X

PORT
BSPP. PORT LEFT RIGHT 05 07 10 12 15 17 20 22 25 30
AB NONE NONE X X X X X X X X X X
EM NONE 3/4" X X X
EA 3/4" NONE X X X
EJ 3/4" 3/4" X X X X
EK 3/4" 1" X X
YU 3/4" 1 1/4" X X X X
EN 1" 3/4" X X
YW 1 1/4" 3/4" X X X X
EP 1" NONE X X X
IH NONE 1" X X X
EQ 1" 1" X X X
ES 1" 1 1/4" * X
IR 1 1/4" * 1" X X X
ID 1 1/2" 1" X
NJ 1 1/4" * NONE X X X
JB NONE 1 1/4" * X
IE 1 1/4" 1 1/4" X
IQ 1 1/4" 1 1/2" * X X
IS 1 1/2" 1 1/4" X X
JV 1 1/2" 1 1/2" X X

56 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH37 SERIES N.P.T. PORTS

PORT
ORB PORT LEFT RIGHT 05 07 10 12 15 17 20 22 25 30
AB NONE NONE X X X X X X X X X
UC NONE 1/2" X X X X
UP 1/2" NONE X X X X
YC 1/2" 1/2" X X X X
UD NONE 5/8" X X X X
UQ 5/8" NONE X X X X
YK 5/8" 5/8" X X X X
YD 1/2" 5/8" X X X X
YJ 5/8" 1/2" X X X X
YL 5/8" 3/4" X X X X
YQ 3/4" 5/8" X X X X X
YS 3/4" 7/8" X X X
UF NONE 3/4" X X X X
UR 3/4" NONE X X X X X
YR 3/4" 3/4" X X X X X
UG NONE 7/8" X X X X
US 7/8" NONE X X X X
YZ 7/8" 7/8" X X X X
YT 3/4" 1" X X X X X
VJ 1" 3/4" X X X X X
YX 7/8" 3/4" X X X X
VC 7/8" 1" X X X
VK 1" 7/8" X X X X X
UH NONE 1" X X X X X
UT 1" NONE X X X X X
VL 1" 1" X X X X X
UJ NONE 1 1/4" X X X X
UV 1 1/4" NONE X X X X
VT 1 1/4" 1 1/4" X X X X X
VM 1" 1 1/4" X X X X
VS 1 1/4" 1" X X X X
VU 1 1/4" 1 1/2" X X X X
VZ 1 1/2" 1 1/4" X X X X
UK NONE 1 1/2" X X
UW 1 1/2" NONE X X
WC 1 1/2" 1 1/2" X X

57
MH37 SERIES N.P.T. PORTS

PORT
Split Flange PORT LEFT RIGHT 05 07 10 12 15 17 20 22 25 30
AB NONE NONE X X X X X X X X X
OC NONE 1/2" X X X X
OP 1/2" NONE X X X X
ZC 1/2" 1/2" X X X
OP NONE 3/4" X X X X X X X X
OR 3/4" NONE X X X X X X X X
ZR 3/4" 3/4" X X X X X X X X
OH NONE 1" X X X X X X X X
OT 1" NONE X X X X X X X
RL 1" 1" X X X X X X
OJ NONE 1 1/4" X X X X X X
OV 1 1/4" NONE X X X X X X
RT 1 1/4" 1 1/4" X X X X X
OK NONE 1 1/2" X X X X X
OW 1 1/2" NONE X X X X X
SC 1 1/2" 1 1/2" X X X X X
OL NONE 2" X X
OX 2" NONE X X
SK 2" 2" X X
OM NONE 2 1/2" X
OY 2 1/2" NONE X
SQ 2 1/2" 2 1/2" X
ZF 1/2" 3/4" X X X X
ZP 3/4" 1/2" X X X X
ZT 3/4" 1" X X X X X X X X
RJ 1" 3/4" X X X X X X X X
RM 1" 1 1/4" X X X X X X X
RS 1 1/4" 1" X X X X X X X
RQ 1 1/4" 3/4" X X X X X X X
ZU 3/4" 1 1/4" X X X X X X X
RU 1 1/4" 1 1/2" X X X X X
RZ 1 1/2" 1 1/4" X X X X X
SD 1 1/2" 2" X X X
SH 2" 1 1/2" X X X
RX 1 1/4" 2" X X
SG 2" 1 1/4" X X
SF 1 1/2" 2 1/2" X
SN 2 1/2" 1 1/2" X
RN 1" 1 1/2" X X X X X X
RY 1 1/2" 1" X X X X X X

58 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH37 SERIES CODING
7 8 SHAFT TYPE
MH / 37 CU. IN. MAX. PSI CODE
07 2.25 2000 psi 2 1.1247 DIA. KEYED SHAFT
10 3 2000 psi 3 6 TOOTH SPLINE 1.1096 MAJ. DIA. X 2 1/8" EXT.
12 3.75 2000 psi 6 .966 DIA 6 TOOTH SPLINE
15 4.50 2000 psi 7 S.A.E. "C" 14 TOOTH SPLINE 1.250" dia
17 5.25 2000 psi 8 1.250 DIA. KEYED SHAFT
20 6 2000 psi 10 1.1235 DIA 6 TOOTH SPLINE SHAFT
22 6.75 2000 psi 11 S.A.E "C" KEYED 1.249 DIA.
25 7.5 2000 psi 25 S.A.E. "B" 13 TOOTH SPLINE .88" dia
30 9 2000 psi 30 S.A.E. "B" KEYED .88" dia 1/4" X 3/8" X1" KEY
38 .8745 DIA. KEYED 1 7/16" EXT X 1 1/4" KEYED
73 1. 249 DIA KEYED DRILLED & TAPPED X 1 1/2"

9 BEARING CARRIERS FOR 37 UNIT ORIENTATION IS FROM THE SHAFT END

N.P.T. S.A.E. O RING
IN OUT LEFT RIGHT IN OUT LEFT RIGHT

NONE NONE B B 1 1/2" NONE NG

NONE 1 1/2" NK
1 1/2" NONE TL
NONE 1 1/2" TJ 1 1/2" 1" XX
1" 1 1/2" XZ
1 1/2" 1" XS
1" 1 1/2" XT 1" 1" QD QD

1" 1" DH DH 1 1/4" 1 1/4" NV NV

1 1/4" 1 1/4" BF BF

S.A.E. SPLIT FLANGE MOTORS ONLY

IN OUT DUAL
1 1/2" NONE FP
NONE 1 1/2" FT NONE NONE B

1 1/2" 1" XV 1" 1" TT NPT

1" 1 1/2" XW 1 1/4" 1 1/4" VV NPT
1 1/2" 1 1/2" WW NPT
1" 1" LP LP 1" 1" CC SAE O RING
1 1/4" 1 1/4" BB SAE O RING
1 1/4" 1 1/4" GL GL 1 1/2" 1 1/2" FF SAE O RING
1" 1" LL SAE SPLIT FLANGE
1 1/4" 1 1/4" MM SAE SPLIT FLANGE
1 1/2" 1 1/2" NN SAE SPLIT FLANGE

10 CONNECTING SHAFT USE CODE #1 FOR ALL

MULTIPLE UNITS

59
MH50/51 SERIES CODING
1 50 51 2 .3 4 . 5 . 6 . 7 . 8 . 9 . 6 . 7 10

1 PUMP / MOTOR REPEAT FOR TANDEM UNITS

MHP PUMP
MHM MOTOR

2 UNIT
A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM WITH A CONTINENTAL SHAFT

3 SHAFT END COVER

1 PUMP WITHOUT SHAFT BEARING CLOCKWISE ROTATION
2 PUMP WITHOUT SHAFT BEARING COUNTER CLOCKWISE ROTATION
3 PUMP WITHOUT SHAFT BEARING DOUBLE ROTATION
4 PUMP WITH SHAFT BEARING CLOCKWISE ROTATION
5 PUMP WITH SHAFT BEARING COUNTER CLOCKWISE ROTATION
6 PUMP WITH SHAFT BEARING DOUBLE ROTATION
8 MOTOR WITH SHAFT BEARING &1/4" DRAIN PORT
9 MOTOR WITHOUT SHAFT BEARING &1/4" DRAIN PORT

4 SHAFT END COVER

00 PAD MOUNT
42 S.A.E. 4 BOLT "B" MOUNT
78 S.A.E. 4 BOLT "C" MOUNT
91 51/51 PIGGY BACK MOUNT
92 76/51 PIGGY BACK MOUNT
94 S.A.E. 2 BOLT "A" MOUNT
96 S.A.E. 2 BOLT "B" MOUNT type 2
97 S.A.E. 2 BOLT "B" MOUNT
98 S.A.E. 2 BOLT "C" MOUNT
99 S.A.E. 2 BOLT "C" MOUNT type 2

A B 5 PORT END COVER CODES

"O" RING PORTS
SINGLE TANDEM PORT SIZE
UNITS UNITS LEFT RIGHT A B
CE CY CI CY 3/4' NONE N/A 1.38
DE DY DI DY NONE 3/4' 1.38 N/A
FE FY FI FY 3/4' 3/4' 1.38 1.38
N.P.T. PORTS
BE BY BI BY NONE NONE N/A N/A
KE KY KI KY 3/4" NONE N/A 1.38
LE LY LI LY NONE 3/4" 1.38 N/A
ME MY MI MY 3/4" 3/4" 1.38 1.38
METRIC STR. THREAD PORTS
NE NI NY 3/4" NONE N/A 1.38
PE PI PY NONE 3/4" 1.38 N/A
QE QI QY 3/4" 3/4" 1.38 1.38
B.S.P.P. PORTS
WE W I WY 3/4" NONE N/A 1.38
ORIENTATION IS FROM THE SHAFT END
XE XI XY NONE 3/4" 1.38 N/A
ZE ZI ZY 3/4" 3/4" 1.38 1.38
FOR LARGER PORTING
CONSULT THE FACTORY
WITH SUPPORT STUDS
WITHOUT SUPPORT STUDS

60 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH50/51 SERIES GEAR HOUSING PORTS

NOTE
* N.P.T. PORTING IS NOT RECOMMENDED FOR PRESSURES ABOVE 1500 P.S.I.
* Ports marked with a “X” are recommended porting, for all other porting please consult the factory
* SHADED CELLS ARE GOOD FOR MOTOR UNITS
* ORIENTATION IS VIEWED FROM THE SHAFT END

NPT.CODE PORT LEFT PORT RIGHT 5 7 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
IC 3/4" NONE X
ID NONE 3/4" X X X X
IF 3/4" 3/4" X X X X X
IG 3/4" 1" X X X
IH 3/4" 1 1/4" X
IJ 1" 3/4" X X X X X
IK 1 1/4" 3/4" X
YC 1" NONE X X X X X
YD NONE 1" X X X X X
YF 1" 1" X X X X X X
YG 1" 1 1/4" * X X X X
YH 1" 1 1/2" X
YJ 1 1/4" * 1" X X X X X
YK 1 1/2" 1" X
IA 1 1/4" * NONE X X X X X
IB NONE 1 1/4" * X X X X X
YL 1 1/4" 1 1/4" X X X X
YM 1 1/4" 1 1/2" * X X X
YP 1 1/2" 1 1/4" X X X
YR 1 1/2" 1 1/2" X X X
YA 1 1/2" NONE X X X
YB NONE 1 1/2" X X X

BSPP.CODE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
YN 3/4" NONE X X
YQ NONE 3/4" X X X X
YS 3/4" 3/4" X X X
YT 3/4" 1" X X X
YU 3/4" 1 1/4" X X X X
YV 1" 3/4" X X X X X
YW 1 1/4" 3/4" X X X X
SL 1" NONE X X X
RQ NONE 1" X X X X X
MP 1" 1" X X X X X
VY 1" 1 1/4" * X X X X X
IX 1 1/4" * 1" X X X X X
NJ 1 1/4" * NONE X X X
UI NONE 1 1/4" * X X
PF 1 1/4" 1 1/4" X X
IQ 1 1/4" 1 1/2" X
IS 1 1/2" 1 1/4" X

61
MH50/51 SERIES GEAR HOUSING PORTS

O.D TUBE.CODE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
EC 3/4" NONE X X X X X
ED NONE 3/4" X X X X X
EF 3/4" 3/4" X X X X X
EG 3/4" 1" X X X
EH 3/4" 1 1/4" X X
EJ 1" 3/4" X X X X X
EK 1 1/4" 3/4" X X
AC 1" NONE X X X X
AD NONE 1" X X X X
AF 1" 1" X X X X X
AG 1" 1 1/4" * X X X X X
AH 1" 1 1/2" X X X
AJ 1 1/4" * 1" X X X X X
AK 1 1/2" * 1" X X X X X
AL 1 1/4" 1 1/4" X X X
AM 1 1/4" 1 1/2" * X X X
AP 1 1/2" * 1 1/4" X X X
AR 1 1/2" 1 1/2" X
AA 1 1/4" * NONE X X X X X
AO NONE 1 1/4" * X X X X X
AE 1 1/2" * NONE X X
AU NONE 1 1/2" * X X

METRIC STR.
THD. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25
AB NONE NONE X X X X X X X X X
EN 3/4" NONE X X X X
TQ NONE 3/4" X X X X
ES 3/4" 3/4" X X
ET 3/4" 1" X X X X X
EV 1" 3/4" X X X X X
NL 1" NONE X X X X
ER NONE 1" X X X X
CM 1" 1" X X X
VE 1" 1 1/4" * X X X X X
EX 1 1/4" * 1" X X X X X
UA NONE 1 1/4" X X X
PA 1 1/4" 1 1/4" X X X
QA 1 1/4" 1 1/2" * X X X
SA 1 1/2" 1 1/4" X X X

62 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH50/51 SERIES GEAR HOUSING PORTS

SPLIT FLANGE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
UC 3/4" NONE X X X X
UD NONE 3/4" X X X X
UF 3/4" 3/4" X X X X X X X
UG 3/4" 1" X X X
UH 3/4" 1 1/4" X X X
UJ 1" 3/4" X X X X X
UK 1 1/4" 3/4" X X X
OC 1" NONE X X X X X X X
OD NONE 1" X X X X X X X
OF 1" 1" X X X X X X
OG 1" 1 1/4" * X X X X
OH 1" 1 1/2" * X X X X X
OJ 1 1/4" * 1" X X X X X X
OK 1 1/2" * 1" X X X X X
OL 1 1/4" 1 1/4" X X X X X
OM 1 1/4" 1 1/2" * X X X X X
ON 1 1/4" 2" X X X
OP 1 1/2" * 1 1/4" X X X X X
OQ 2" 1 1/4" X X
OR 1 1/2" 1 1/2" X X X X
OS 1 1/2" 2" X X X
OV 2" 1 1/2" X X X
OX 2" 2" X
OA 1 1/4" * NONE X X X X X X
OB NONE 1 1/4" * X X X X X X
OE 1 1/2" * NONE X X X X X
OU NONE 1 1/2" * X X X X X
UB 1" 2" X X X
UQ 2" 1" X X X
XB 2" NONE X X X
ZB NONE 2" X X X

63
MH50/51 SERIES GEAR HOUSING PORTS

METRIC S. F. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25

AB NONE NONE X X X X X X X X X
VN 3/4" NONE X X X X
VQ NONE 3/4" X X X X
VS 3/4" 3/4" X X X
VT 3/4" 1" X X X X X
RV 1" 3/4" X X X X X
RU 3/4" 1 1/4" X X X
RW 1 1/4" 3/4" X X X
UL 1" NONE X X X X X
UR NONE 1" X X X X X
UM 1" 1" X X X X X
VU 1" 1 1/4" * X X X X X X
UX 1 1/4" * 1" X X X X X X
HO 1" 1 1/2" * X X X
VO 1 1/2" * 1" X X X
NO 1 1/4" * NONE X X X X
UO NONE 1 1/4" * X X X X
PO 1 1/4" 1 1/4" X X X X X
QO 1 1/4" 1 1/2" * X X X X X
SO 1 1/2" * 1 1/4" X X X X X
JR 1 1/4" 2" X X X

JM 2" 1 1/4" X X X
UY 1 1/2" * NONE X X X X
TO NONE 1 1/2" * X X X X
SV 1 1/2" 1 1/2" X X X
JN 1 1/2" 2" X X X
JQ 2" 1 1/2" X X X

2" gear width & up 6.62

under 2" gear width 5.32

The width of the gear housing listed below

6.00
Gear size Housing size
1/2" Gear Size 1.25
3/4" Gear Size 1.50
1" Gear Size 1.75
1 1/4" Gear Size 2.00
1 1/2" Gear Size 2.25
1 3/4" Gear Size 2.50
2" Gear Size 2.75
2 1/4" Gear Size 3.00
2 1/2" Gear Size 3.25

64 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH50/51 SERIES CODING

8 SHAFT TYPE 7 GEAR SIZE MH 50 / 51

CODE 50 51
07 S.A.E. "C" 14 TOOTH SPLINE 1.250" dia MH 50/51 CU. IN. MAX. PSI MAX. PSI
11 S.A.E. "C" KEYED 1.25" dia 5/16" X 15/32" X1 1/2" KEY
25 S.A.E. "B" 13 TOOTH SPLINE .88" dia 07 1.91 2500 PSI 3000 PSI
43 S.A.E. B B KEYED 1" dia. 1/4" X 3/8" X 1 1/4" KEY 10 2.55 2500 PSI 3000 PSI
53 S.A.E. C 14 TOOTH SPLINE 1.25" dia. 12 3.19 2500 PSI 3000 PSI
65 S.A.E. "B" 13 TOOTH SPLINE .875" dia TYPE 2 15 3.83 2500 PSI 3000 PSI
67 S.A.E. B B KEYED 1" dia. 1/4" X 3/8" X 1 1/4" KEY TYPE 2 17 4.46 2000 PSI 3000 PSI
73 S.A.E. "C" KEYED 1.25" dia 5/16" X 15/32" X 2 1/4" KEY
20 5.10 2000 PSI 2500 PSI
98 S.A.E. B B 15 TOOTH SPLINE 1" dia. — CONTINENTAL ONLY
22 5.74 2000 PSI 2500 PSI
25 6.38 2000 PSI 2500 PSI
9 BEARING CARRIERS ORIENTATION IS FROM THE SHAFT END
N.P.T. S.A.E. SPLIT FLANGE
IN OUT CW CCW IN OUT CW CCW

NONE NONE C D 1" NONE LB BL

NONE NONE A U 1 1/4" NONE MB BM
1 1/2" NONE NB BN
1" NONE TB BT
1 1/4" NONE VB BV NONE 3/4" BR RB
1 1/2" NONE WB BW 1" 3/4" LR RL
1 1/4" 3/4" MR RM
1" 3/4" TX XT 1 1/2" 3/4" NR RN
1 1/4" 3/4" VX XV 1 1/4" 1" MS SM
1 1/2" 3/4" WX XW 1 1/2" 1" NS SN
1 1/4" 1" VZ ZV
1 1/2" 1" WZ ZW 1" 3/4" LX XL
1 1/4" 3/4" MX XM
1" 3/4" TJ JT 1 1/4" 1" MZ ZM
1 1/4" 3/4" VJ JV 1 1/2" 1" NZ ZN
1 1/4" 1" VK KV
1 1/2" 1" WK KW 1" 3/4" SR RS

1" 3/4" ZX XZ
S.A.E. O RING MOTORS ONLY
IN OUT DUAL
1" NONE CB BC
1 1/4" NONE DB BD NONE NONE B
1 1/2" NONE FB BF
1" 1" TT NPT
NONE 3/4" PJ JP 1 1/4" 1 1/4" VV NPT
1" 3/4" CJ JC 1 1/2" 1 1/2" WW NPT
1 1/4" 3/4" DJ JD 1" 1" CC SAE O RING
1 1/2" 3/4" FJ JF 1 1/4" 1 1/4" BB SAE O RING
1 1/4" 1" DK KD 1 1/2" 1 1/2" FF SAE O RING
1 1/2" 1" FK KF 1" 1" LL SAE SPLIT FLANGE
1 1/4" 1 1/4" MM SAE SPLIT FLANGE
1" 3/4" CR RC 1 1/2" 1 1/2" NN SAE SPLIT FLANGE

10 CONNECTING SHAFT USE CODE #1 FOR ALL

MULTIPLE UNITS

FOR PIGGYBACK UNITS CONTACT PRODUCT SUPPORT

65
MH75/76 SERIES CODING
1 75 76 2 3 4 5 6 7 8 9 6 7 10

1 PUMP / MOTOR REPEAT FOR TANDEM UNITS

MHP PUMP
MHM MOTOR

2 UNIT

A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM WITH A CONTINENTAL SHAFT

3 SHAFT END COVER

1 PUMP WITHOUT SHAFT BEARING CLOCKWISE ROTATION
2 PUMP WITHOUT SHAFT BEARING COUNTER CLOCKWISE ROTATION
3 PUMP WITHOUT SHAFT BEARING DOUBLE ROTATION
4 PUMP WITH SHAFT BEARING CLOCKWISE ROTATION
5 PUMP WITH SHAFT BEARING COUNTER CLOCKWISE ROTATION
6 PUMP WITH SHAFT BEARING DOUBLE ROTATION
8 MOTOR WITH SHAFT BEARING & 1/4" DRAIN PORT
9 MOTOR WITHOUT SHAFT BEARING & 1/4" DRAIN PORT

4 SHAFT END COVER

42 S.A.E. 4 BOLT "B" MOUNT

78 S.A.E. 4 BOLT "C" MOUNT
80 S.A.E. 4 BOLT "D" MOUNT
98 S.A.E. 2 BOLT "C" MOUNT

A B
5 PORT END COVER CODES

NO PORTS
SINGLE TANDEM PORT SIZE
UNITS UNITS LEFT RIGHT A B
BE BY BI BY NONE NONE N/A N/A
"O"RING PORTS
JE JY JI JY 1" 1" 1.62 1.62
METRIC STR. THREAD PORTS
TE TY TI TY 1" 1" 1.62 1.62

WITH SUPPORT STUDS

WITHOUT SUPPORT STUDS

ORIENTATION IS FROM THE SHAFT END

FOR OTHER PORTING

CONSULT THE FACTORY

66 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH75/76 SERIES GEAR HOUSING PORTS
NOTE
* N.P.T. PORTING IS NOT RECOMMENDED FOR PRESSURES ABOVE 1500 P.S.I.
* Ports marked with a “X” are recommended porting, for all other porting please consult the factory
* SHADED CELLS ARE GOOD FOR MOTOR UNITS
* ORIENTATION IS VIEWED FROM THE SHAFT END

NPT. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25 27 30

AB NONE NONE X X X X X X X X X X X
IC 3/4" NONE
ID NONE 3/4" X X X X
IF 3/4" 3/4"
IG 3/4" 1" X
IH 3/4" 1 1/4"
IJ 1" 3/4" X X X
IK 1 1/4" 3/4"
YC 1" NONE X
YD NONE 1" X X X X
YF 1" 1" X X
YG 1" 1 1/4" * X X
YH 1" 1 1/2"
YJ 1 1/4" * 1" X X
YK 1 1/2" 1"
YL 1 1/4" 1 1/4" X X X
YM 1 1/4" 1 1/2" *

YP 1 1/2" 1 1/4"
YR 1 1/2" 1 1/2"

BSPP.CODE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25 27 30

AB NONE NONE X X X X X X X X X X X
YN 3/4" NONE X X
YQ NONE 3/4" X X X X X X
YS 3/4" 3/4"
YT 3/4" 1" X
YU 3/4" 1 1/4"
YV 1" 3/4"
YW 1 1/4" 3/4"
SL 1" NONE X X X X X X
RQ NONE 1" X X X X X X
MP 1" 1" X X
VY 1" 1 1/4" * X X X X X X X
IX 1 1/4" * 1" X X X X X X X
NJ 1 1/4" * NONE X X X
UI NONE 1 1/4" * X X X
PF 1 1/4" 1 1/4" X
IQ 1 1/4" 1 1/2" X X X
IS 1 1/2" 1 1/4" X X X
HW 1" 1 1/2" X X
VI 1 1/2" 1" X X

67
MH75/76 SERIES GEAR HOUSING PORTS
SPLIT FLANGE PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25 27 30
AB NONE NONE X X X X X X X X X X X
UC 3/4" NONE X X X X
UD NONE 3/4" X X X X
UF 3/4" 3/4" X
UG 3/4" 1" X X
UH 3/4" 1 1/4"
UJ 1" 3/4" X X X X X
UK 1 1/4" 3/4"
OC 1" NONE X
OD NONE 1" X X X X X
OF 1" 1" X X X X X X X X
OG 1" 1 1/4" * X X X
OH 1" 1 1/2" * X X X X X
OJ 1 1/4" * 1" X X X X X X X
OK 1 1/2" * 1" X X X X X
OL 1 1/4" 1 1/4" X X X X X X X X
OM 1 1/4" 1 1/2" * X X X X X X
ON 1 1/4" 2" X X X X X X
OP 1 1/2" * 1 1/4" X X X X X X X X
OQ 2" 1 1/4" X X X X X X
OR 1 1/2" 1 1/2" X X X X X
OS 1 1/2" 2" X X X X X
OT 1 1/2" 2 1/2" X X X
OV 2" 1 1/2" X X X X X
OW 2 1/2" 1 1/2" X X X
OX 2" 2" X X
OA 1 1/4" * NONE X X X X X X
UB 1" 2" X
UQ 2" 1" X
OB NONE 1 1/4" * X X X X X X
OE 1 1/2" * NONE X X
OU NONE 1 1/2" * X X X X X
OY 2" 2 1/2" X
OZ 2 1/2" 2" X
UN 1 1/4" 2 1/2" X
US 2 1/2" 1 1/4" X

68 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH75/76 SERIES GEAR HOUSING PORTS
METRIC S.F. PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25 27 30
AB NONE NONE X X X X X X X X X X X
VN 3/4" NONE X X X X
VQ NONE 3/4" X X X X
VS 3/4" 3/4" X X
VT 3/4" 1" X X
RU 3/4" 1 1/4" X
RV 1" 3/4" X X X X X X
RW 1 1/4" 3/4" X
UL 1" NONE X X X X
UR NONE 1" X X X X
UM 1" 1" X X X X X
VU 1" 1 1/4" * X X
HO 1" 1 1/2" * X X
UX 1 1/4" * 1" X X X X X X X
VO 1 1/2" * 1" X X
NO 1 1/4" * NONE X X X X X X
UO NONE 1 1/4" * X X X X X X
PO 1 1/4" 1 1/4" X X X X X X X X
QO 1 1/4" 1 1/2" * X X X X
SO 1 1/2" * 1 1/4" X X X X X X X
JR 1 1/4" 2" X X X X
JM 2" 1 1/4" X X X X
UY 1 1/2" * NONE X X X
TO NONE 1 1/2" * X X X X X
SV 1 1/2" 1 1/2" X X X X X
JN 1 1/2" 2" X X X X X
JQ 2" 1 1/2" X X X X X
JX 1 1/2" 2 1/2" X X
LJ 2 1/2" 1 1/2" X X
JS 2" 2" X

METRIC STR. THD PORT LEFT PORT RIGHT 05 07 10 12 15 17 20 22 25 27 30

AB NONE NONE X X X X X X X X X X X
EN 3/4" NONE X X X X
TQ NONE 3/4" X X X X
ES 3/4" 3/4" X X
ET 3/4" 1" X
EV 1" 3/4" X X X X
NL 1" NONE X X
ER NONE 1" X X
CM 1" 1" X X X

69
MH75/76 SERIES GEAR HOUSING PORTS

PORT PORT
O.D. TUBE LEFT RIGHT 05 07 10 12 15 17 20 22 25 27 30
AB NONE NONE X X X X X X X X X X X
EC 3/4" NONE X X X X
ED NONE 3/4" X X X X
EF 3/4" 3/4" X
EG 3/4" 1" X X X
EH 3/4" 1 1/4" X
EJ 1" 3/4" X X X
EK 1 1/4" 3/4" X
AC 1" NONE
AD NONE 1" X X
AF 1" 1" X X X X X
AG 1" 1 1/4" * X X
AH 1" 1 1/2" X
AJ 1 1/4" * 1" X X
AK 1 1/2" 1" X
AL 1 1/4" 1 1/4" X X X X X X
AM 1 1/4" 1 1/2" * X X
AP 1 1/2" 1 1/4" X X
AR 1 1/2" 1 1/2" X X X

The width of the gear housing listed below

Gear size Housing size

3/4" Gear Size 1.75
1" Gear Size 2.00
1 1/4" Gear Size 2.25
1 1/2" Gear Size 2.50
1 3/4" Gear Size 2.75
2" Gear Size 3.00
2 1/4" Gear Size 3.25
2 1/2" Gear Size 3.50
2 3/4" Gear Size 3.75
3" Gear Size 4.00

7.62"

7.88"

70 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH75/76 SERIES CODING

7 GEAR SIZE MH 75 / 76
75 76
MH 75/ 76 CU. IN. MAX. PSI MAX. PSI
07 3.07 2500 PSI 3000 PSI
10 4.1 2500 PSI 3000 PSI 8 SHAFT TYPE
12 5.12 2500 PSI 3000 PSI
CODE
15 6.15 2500 PSI 3000 PSI
17 7.17 2500 PSI 3000 PSI 07 S.A.E. "C" 14 TOOTH SPLINE 1.250" dia
20 8.2 2500 PSI 2500 PSI 11 S.A.E. "C" KEYED 1.25" dia 5/16" X 15/32" X1 1/2" KEY
22 9.22 2250 PSI 2500 PSI
25 10.25 2250 PSI 2500 PSI
27 11.27 2000 PSI 2000 PSI
30 12.3 2000 PSI 2000 PSI

9 BEARING CARRIERS ORIENTATION IS FROM THE SHAFT END

N.P.T. S.A.E. SPLIT FLANGE
IN OUT CW CCW IN OUT CW CCW

NONE NONE C D 1" NONE LB BL

NONE NONE A U 1 1/4" NONE MB BM
1 1/2" NONE NB BN
S.A.E. O RING
NONE 3/4" BR RB
1" NONE CB BC 1" 3/4" LR RL
1 1/4" NONE DB BD 1 1/4" 3/4" MR RM
1 1/2" NONE FB BF 1 1/2" 3/4" NR RN
1 1/4" 1" MS SM
NONE 3/4" PJ JP 1 1/2" 1" NS SN
1" 3/4" CJ JC
1 1/4" 3/4" DJ JD 1" 3/4" LX XL
1 1/2" 3/4" FJ JF 1 1/4" 3/4" MX XM
1 1/4" 1" DK KD 1 1/4" 1" MZ ZM
1 1/2" 1" FK KF 1 1/2" 1" NZ ZN

1" 3/4" CR RC 1" 3/4" SR RS

1 1/4" 3/4" DR RD
1 1/2" 3/4" FR RF MOTORS ONLY
1 1/4" 1" DS SD IN OUT DUAL
1 1/2" 1" FS SF
NONE NONE B

1" 1" CC SAE O RING

1 1/4" 1 1/4" BB SAE O RING
1" 1" LL SAE SPLIT FLANGE
1 1/4" 1 1/4" MM SAE SPLIT FLANGE
1 1/2" 1 1/2" NN SAE SPLIT FLANGE

10 CONNECTING SHAFT USE CODE #1 FOR ALL

MULTIPLE UNITS

FOR PIGGYBACK UNITS CONTACT PRODUCT SUPPORT

71
MH315 SERIES CODING
1 315 2 3 4 5 6 7 8 9 6 7 10

1 MHP PUMP REPEAT FOR TANDEM UNITS

MHM MOTOR
2 UNIT
A SINGLE UNIT
B TANDEM UNITS
L UNIT WITH EXTENDED STUDS
3 SHAFT END COVER
1 PUMP COMPLETE WITHOUT SHAFT BEARING CW
2 PUMP WITHOUT SHAFT BEARING CCW
4 PUMP COMPLETE WITH SHAFT BEARING CW CODE 490 ONLY
5 PUMP COMPLETE WITH SHAFT BEARING CCW CODE 590 ONLY
9 MOTOR BI-ROTATIONAL WITHOUT SINGLE SHAFT BEARING

4 SHAFT END COVER

90 S.A.E. 4 BOLT 72 X 100 X 80 mm

93 S.A.E. 2 BOLT "A" MOUNT
95 PAD MOUNT
96 S.A.E. 2 BOLT "B" MOUNT

5 PORT END COVER

SIDE PORTED

UNPORTED S.A.E..O RING REAR PORTED - S.A.E..O RING

BI NONE X NONE CW CCW IN OUT CW CCW IN OUT
FB BF 1 1/4" X 1" UC CU 1 1/4" X 1"
NPT PORTS ONLY - SIDE PORT FC CF 1 1/4" X 7/8" UF FU 1 1/4" X 7/8"
FG GF 1 1/4" X 3/4" UN NU 1 1/4" X 3/4"
CW CCW IN OUT
FJ JF 1 1/4" 5/8" UD DU 1" X 1"
AJ JA 1 1/4" X 1"
FL LF 1" X 1" UP PU 1" X 7/8"
AK KA 1 1/4" X 3/4" 1" X 7/8"
FV VF UQ QU 1" X 3/4"
AL LA 1" X 1" FW WF 1" X 3/4" UR RU 1" X 5/8"
AM MA 1" X 3/4" FX XF 1" X 5/8" LN NL 7/8" X 7/8"
AR RA 3/4" X 3/4" FY YF 7/8" X 7/8" LP PL 7/8" X 3/4"
MOTOR PORT END COVER - SIDE PORT FZ ZF 7/8" X 3/4" LQ QL 7/8" X 5/8"
BI-ROTATION NPT BC CB 7/8" X 5/8" LR RL 3/4" X 3/4"
DN 3/4" X 3/4" BG GB 7/8" X 1/2" LS SL 3/4" X 5/8"
DM 1" X 1" BJ JB 3/4" X 3/4" LT TL 3/4" X 1/2"
DQ 1/2" X 1/2" BL LB 3/4" X 5/8" MOTOR REAR PORT
BN NB 3/4" X 1/2"
BI-ROTATION S.A.E O RING
BV VB 1 1/4" X NONE
RN 1" X 1"
BW WB 1" X NONE
RQ 3/4" X 3/4"
BX XB 7/8" X NONE
RS 1/2" X 1/2"
BY YB 3/4" X NONE
BZ ZB NONE X 1"
MOTOR REAR PORT
PD DP NONE X 7/8"
BI-ROTATION NPT
PE EP NONE X 3/4"
RX 1" X 1"
PM MP NONE X 5/8"
RY 3/4" X 3/4"
PN NP NONE X 1/2"
RZ 1/2" X 1/2"
MOTOR SIDE PORT
BI-ROTATION S.A.E O RING
VN 1" X 1"
VR 3/4" X 3/4"
VQ 1/2" X 1/2"

72 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH315 SERIES CODING
6 GEAR HOUSING 9 BEARING CARRIERS SINGLE OUTLET (PUMPS)
S.A.E SPLIT FLANGE
IN OUT CODE DUAL OUTLET (PUMPS) CW CCW IN OUT
NONE NONE AB PUMP CJ JC 1 1/4" 1 1/4"
S.A.E SPLIT FLANGE
CL LC 1 1/4" 1"
NONE NONE EB MOTOR CW CCW IN OUT OUT
CM MC 1 1/4" 3/4"
CA AC 1 1/4" 3/4" 3/4"
HB BH 1 1/4" 1/2"
DA AD 1 1/4" 3/4" 1/2"
HC CH 1" 1"
EA AE 1 1/4" 1/2" 1/2"
7 HF FH 1" 3/4"
FA AF 1" 3/4" 3/4"
HL LH 1" 1/2"
GEAR CU. IN. MAX P.S.I GA GA 1" 3/4" 1/2"
HM MH 3/4" 3/4"
3 3/8" .47 3500 PSI HA AH 1" 1/2" 1/2"
HN NH 3/4" 1/2"
5 1/2" .62 3500 PSI
6 5/8" .78 3500 PSI
7 3/4" .93 3500 PSI S.A.E O RING
S.A.E O RING
8 7/8" 1.09 3500 PSI CW CCW IN OUT OUT
CW CCW IN OUT
10 1" 1.24 3500 PSI JG GJ 1 1/2" 1" 1"
KB BK 1 1/2" 1 1/2"
11 1 1/8" 1.40 3500 PSI KG GK 1 1/2" 1" 7/8"
KC CK 1 1/2" 1 1/4"
12 1 1/4" 1.55 3500 PSI LG GL 1 1/2" 7/8" 7/8"
KF FK 1 1/2" 1"
13 1 3/8" 1.71 3500 PSI MG GM 1 1/2" 1" 3/4"
KL LK 1 1/2" 7/8"
15 1 1/2" 1.86 3300 PSI NG GN 1 1/2" 3/4" 3/4"
KM MK 1 1/2" 3/4"
16 1 5/8" 2.02 3100 PSI PG GP 1 1/4" 1" 1"
KN NK 1 1/4" 1 1/4"
17 1 3/4" 2.17 2900 PSI QG GQ 1 1/4" 1" 7/8"
KO OK 1 1/4" 1"
18 1 7/8" 2.33 2700 PSI RG GR 1 1/4" 7/8" 7/8"
KP PK 1 1/4" 7/8"
20 2" 2.48 2500 PSI SG GS 1 1/4" 1" 3/4"
KQ QK 1 1/4" 3/4"
TG GT 1 1/4" 3/4" 3/4"
MB BM 1 1/4" 5/8"
UG GU 1 1/4" 3/4" 5/8"
ML LM 1 1/4" 1/2"
8 SHAFT TYPE VG GV 1 1/4" 3/4" 1/2"
MN NM 1" 1"
WG GW 1 1/4" 5/8" 5/8"
MQ QM 1" 7/8"
97 S.A.E. "A" KEYED XG GX 1 1/4" 1/2" 1/2"
MR RM 1" 3/4"
96 S.A.E. "A" SPLINE YG GY 1" 1" 1"
MS SM 1" 5/8"
66 S.A.E. "B" KEYED ZG GZ 1" 1" 7/8"
MT TM 1" 1/2"
65 S.A.E. "B" SPLINE RC CR 1" 7/8" 7/8"
MU UM 3/4" 3/4"
SC CS 1" 1" 3/4"
MV VM 3/4" 5/8"
TC CT 1" 3/4" 3/4"
MW WM 3/4" 1/2"
VC CV 1" 3/4" 5/8"
WC CW 1" 3/4" 1/2"
XC CX 1" 5/8" 5/8"
YC CY 1" 1/2" 1/2"

10 CONNECTING SHAFT USE CODE #1 FOR ALL

MULTIPLE UNITS

73
MH330 SERIES CODING
1 330 2 3 4 5 . 6 . 7 . 8 . 9 . 6 . 7 . 10

1 MHP PUMP
MHM MOTOR
2 UNIT
A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM UNIT WITH CONTINENTAL SHAFT
L UNIT WITH EXTENDED STUDS
3 SHAFT END COVER
1 PUMP COMPLETE WITHOUT SHAFT BEARING CW
2 PUMP WITHOUT SHAFT BEARING CCW
4 PUMP COMPLETE WITH SHAFT BEARING CW
5 PUMP COMPLETE WITH SHAFT BEARING CCW
8 MOTOR BI-ROTATIONAL WITH SHAFT BEARING
9 MOTOR BI-ROTATIONAL WITHOUT SINGLE SHAFT BEARING
4 SHAFT END COVER
42 S.A.E. 4 BOLT "B" MOUNT
78 S.A.E. 4 BOLT "C" MOUNT
97 S.A.E. 2 BOLT "B" MOUNT

5 PORT END COVER

SIDE PORTED

UNPORTED S.A.E..O RING S.A.E.SPLIT FLANGE

BI NONE X NONE CW CCW IN OUT CW CCW IN OUT
FJ JF 1 1/4" X 1" EJ JE 1 1/2" X 1 1/4"
FL LF 1" X 1" EK KE 1 1/2" X 1"
BG GB 1 1/4" X NONE EL LE 1 1/4" X 1 1/4"
NPT PORTS ONLY BJ JB 1" X NONE EM ME 1 1/4" X 1"
CW CCW IN OUT BN NB NONE X 1" EN NE 1" X 1"
AJ JA 1 1/4" X 1" MOTOR PORT END COVER OF FO 1 1/2" X NONE
AK KA 1 1/4" X 3/4" BI-ROTATION S.A.E. COVER OG GO 1 1/4" X NONE
AL LA 1" X 1" VR 3/4" X 3/4" OJ JO 1" X NONE
AM MA 1" X 3/4" VN 1" X 1" OM MO NONE X 1 1/4"
AR RA 3/4" X 3/4" VC 1 1/4" X 1 1/4" ON NO NONE X 1"
MOTOR PORT END COVER MOTOR SIDE PORT
BI-ROTATION NPT BI-ROTATION S.A.E S.F.
DN 1" X 1" CS 1 1/4" X 1 1/4"
DM 1 1/4" X 1 1/4" CT 1" X 1"
DQ 1 1/2" X 1 1/2" CV 3/4" X 3/4"

74 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

MH330 SERIES CODING

75
MH350 SERIES CODING
1 350 2 3 4 5 6 7 8 9 6 7 10

1 MHP PUMP REPEAT FOR TANDEM UNITS

MHM MOTOR

2 UNIT
A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM UNIT WITH CONTINENTAL SHAFT
L UNIT WITH EXTENDED STUDS

3 SHAFT END COVER

1 PUMP WITHOUT SHAFT BEARING CW
2 PUMP WITHOUT SHAFT BEARING CCW
4 PUMP COMPLETE WITH SHAFT BEARING CW
5 PUMP COMPLETE WITH SHAFT BEARING CCW
8 MOTOR BI-ROTATIONAL WITH SHAFT BEARING
9 MOTOR BI-ROTATIONAL WITHOUT SHAFT BEARING

4 SHAFT END COVER

42 S.A.E. 4 BOLT "B" MOUNT
46 S.A.E. 4/2 BOLT "B" MOUNT
78 S.A.E. 4 BOLT "C" MOUNT
97 S.A.E. 2 BOLT "B" MOUNT
98 S.A.E. 2 BOLT "C" MOUNT
5 PORT END COVER
SIDE PORTED

UNPORTED S.AE. SPLIT FLANGE

BI IB NONE X NONE CW CCW IN OUT
EC CE 2" X 1 1/2"
EF FE 2" X 1 1/4"
EG GE 2" X 1"
EH HE 1 1/2" X 1 1/2"
S.A.E..O RING EJ JE 1 1/2" X 1 1/4"
CW CCW 1N OUT EK KE 1 1/2" X 1"
FB BF 1 1/2" X 1 1/4" EL LE 1 1/4" X 1 1/4"
FC CF 1 1/2" X 1" EM ME 1 1/4" X 1"
FG GF 1 1/4" X 1 1/4" EN NE 1" X 1"
FJ JF 1 1/4" X 1" OE EO 2" X NONE
FL LF 1" X 1" OF FO 1 1/2" X NONE
BC CB 1 1/2" X NONE OG GO 1 1/4" X NONE
BG GB 1 1/4" X NONE OJ JO 1" X NONE
BJ JB 1" X NONE OL LO NONE X 1 1/2"
BL LB NONE X 1 1/4" OM MO NONE X 1 1/4"
BN NB NONE X 1" ON NO NONE X 1"

MOTOR SIDE PORT

MOTOR SIDE PORT BI-ROTATION S.A.E S.F.
BI-ROTATION S.A.E 0 RING CR 1 1/2" X 1 1/2"
VC 1 1/4" X 1 1/4" CS 1 1/4" X 1 1/4"
VN 1" X 1" CT 1" X 1"
VR 3/4" X 3/4" CV 3/4" X 3/4"

76 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

MH350 SERIES CODING

77
MH365 SERIES CODING
1 365 2 3 4 5 6 7 8 9 6 7 10

1 MHP PUMP REPEAT FOR TANDEM UNITS

MHM MOTOR

2 UNIT
A SINGLE UNIT
B TANDEM UNITS
C SINGLE OR TANDEM UNIT WITH CONTINENTAL SHAFT
L UNIT WITH EXTENDED STUDS

3 SHAFT END COVER

1 PUMP COMPLETE WITHOUT SHAFT BEARING CW
2 PUMP WITHOUT SHAFT BEARING CCW
4 PUMP COMPLETE WITH SHAFT BEARING CW
5 PUMP COMPLETE WITH SHAFT BEARING CCW
8 MOTOR BI-ROTATIONAL WITH SHAFT BEARING
9 MOTOR BI-ROTATIONAL WITHOUT SINGLE SHAFT BEARING

4 SHAFT END COVER

42 S.A.E. 4 BOLT "B" MOUNT
78 S.A.E. 4 BOLT "C" MOUNT
97 S.A.E. 2 BOLT "B" MOUNT
98 S.A.E. 2 BOLT "C" MOUNT

5 PORT END COVER

SIDE PORTED

UNPORTED S.A.E. SPLIT FLANGE

BI IB NONE X NONE CW CCW IN OUT
EC CE 2" X 1 1/2"
EF FE 2" X 1 1/4"
EG GE 2" X 1"
S.A.E..O RING EH HE 1 1/2" X 1 1/2"
CW CCW IN OUT EJ JE 1 1/2" X 1 1/4"
FB BF 1 1/2" X 1 1/4" EK KE 1 1/2" X 1"
FC CF 1 1/2" X 1" EL LE 1 1/4" X 1 1/4"
FG GF 1 1/4" X 1 1/4" EM ME 1 1/4" X 1"
FJ JF 1 1/4" X 1" EN NE 1" X 1"
FL LF 1" X 1" OE EO 2" X NONE
BC CB 1 1/2" X NONE OF FO 1 1/2" X NONE
BG GB 1 1/4" X NONE OG GO 1 1/4" X NONE
BJ JB 1" X NONE OJ JO 1" X NONE
BL LB NONE X 1 1/4" OL LO NONE X 1 1/2"
BN NB NONE X 1" OM MO NONE X 1 1/4"
ON NO NONE X 1"

MOTOR SIDE PORT

MOTOR SIDE PORT BI-ROTATION S.A.E S.F.
BI-ROTATION S.A.E 0 RING CR 1 1/2" X 1 1/2"
VC 1 1/4" X 1 1/4" CS 1 1/4" X 1 1/4"
VN 1" X 1" CT 1" X 1"
VR 3/4" X 3/4" CV 3/4" X 3/4"

78 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 MH365 SERIES CODING

6 GEAR HOUSING SINGLE OUTLET (PUMPS)

S.A.E SPLIT FLANGE
IN OUT CODE CW CCW IN OUT
NONE NONE AB PUMP CJ JC 2 1/2" 1 1/2"
NONE NONE EB MOTOR CL LC 2 1/2" 1 1/4"
CM MC 2 1/2" 1"
7 HB BH 2" 1 1/2"
GEAR CU. IN. MAX P.S.I HC CH 2" 1 1/4"
07 3/4" 2.70 3500 PSI HF FH 2" 1"
10 1" 3.60 3500 PSI HL LH 1 1/2" 1 1/2"
12 1 1/4" 4.50 3500 PSI HM MH 1 1/2" 1 1/4"
15 1 1/2" 5.40 3500 PSI HN NH 1 1/2" 1"
17 1 3/4" 6.30 3500 PSI HO OH 1 1/4" 1 1/4"
20 2" 7.20 3500 PSI HP PH 1 1/4" 1"
22 2 1/4" 8.1 3250 PSI HQ QH 1" 1"
25 2 1/2" 9 3000 PSI

8 SHAFT TYPE SINGLE OUTLET (PUMPS)

S.A.E O RING
7 S.A.E. "C" SPLINE CW CCW IN OUT
11 S.A.E. "C" KEYED KB BK 2" 1 1/2"
KC CK 2" 1 1/4"
9 BEARING CARRIERS KF FK 2" 1"
KL LK 1 1/2" 1 1/2"
DUAL OUTLET (PUMPS) KM MK 1 1/2" 1 1/4"
S.A.E SPLIT FLANGE KN NK 1 1/2" 1"
CW CCW IN OUT OUT KO OK 1 1/4" 1 1/4"
AC CA 2 1/2" 1 1/2" 1 1/2" KP PK 1 1/4" 1"
AD DA 2 1/2" 1 1/2" 1 1/4" KQ QK 1" 1"
AE EA 2 1/2" 1 1/2" 1" COMBINED OUTLET
AF FA 2 1/2" 1 1/4" 1 1/4" S.A.E SPLIT FLANGE (PUMPS)
AG GA 2 1/2" 1 1/4" 1" CW CCW IN OUT
AH HA 2 1/2" 1" 1" UC CU 2 1/2" 1 1/2"
AM MA 2" 1 1/4" 1 1/4" UF FU 2 1/2" 1 1/4"
AN NA 2" 1 1/4" 1" UN NU 2" 1 1/2"
AP PA 2" 1" 1" UO OU 2" 1 1/4"
AT TA 1 1/2" 1 1/4" 1 1/4" UP PU 1 1/2" 1 1/2"
AU UA 1 1/2" 1 1/4" 1" UQ QU 1 1/2" 1 1/4"
AV VA 1 1/2" 1" 1"
UR RU 1 1/4" 1 1/4"
AW WA 1 1/4" 1 1/4" 1 1/4"
S.A.E SPLIT FLANGE (MOTORS)
AX XA 1 1/4" 1 1/4" 1"
BI-ROTATION
AY YA 1 1/4" 1" 1"
AA 2" 2"
AZ ZA 1" 1" 1"
BB 1 1/2" 1 1/2"
S.A.E O RING CC 1 1/4" 1 1/4"
CW CCW IN OUT OUT EE 1" 1"
GJ JG 2" 1 1/2" 1 1/2" FF 3/4" 3/4"
GK KG 2" 1 1/2" 1 1/4"
S.A.E O RING (PUMPS) S.A.E O RING (MOTORS)
GL LG 2" 1 1/2" 1"
PE EP 2" 1 1/2" BI-ROTATION
GM MG 2" 1 1/4" 1 1/4"
PM MP 2" 1 1/4" MM 1 1/2" 1 1/2"
GN NG 2" 1 1/4" 1"
PN NP 1 1/2" 1 1/2" NN 1 1/4" 1 1/4"
GP PG 2" 1" 1"
QQ 1" 1"
GT TG 1 1/2" 1 1/4" 1 1/4" PQ QP 1 1/2" 1 1/4"
RR 3/4" 3/4"
GU UG 1 1/2" 1 1/4" 1" PR RP 1 1/4" 1 1/4"
GV VG 1 1/2" 1" 1"
GW WG 1 1/4" 1 1/4" 1 1/4"
GX XG 1 1/4" 1 1/4" 1"
GY YG 1 1/4" 1" 1"
GZ ZG 1" 1" 1" 10 CONNECTING SHAFT USE CODE #1 FOR ALL
MULTIPLE UNITS

79
PIGGYBACK PUMPS
The piggyback pump is two pumps sharing the same driveline. Metaris offers three types of piggyback units. The original
bearing type piggyback version, the Add-A-Pump and the phase two close couple model. The Add-A-Pump allows for any
type of pump to be installed to the rear of the main pump. While the close couple type requires Metaris 300 series pump
added to the rear of the main pump, the bearing type requires another bearing type unit to be added to the main pump.

Pump 1 Pump 2
Fig. 1
Bearing Type Piggyback Pump
* Single drive
* Two suction lines required
* Both pumps bearing type
Inlet Inlet

Pump 1 Pump 2
Fig. 2
Close couple Type Piggyback Pump
* Single drive p
* One suction line required
* Both pumps bushing type

Inlet

Pump 1 Pump 2
Fig. 3
Add - A - Pump Piggyback unit Drive line
* Single drive
* Two suction lines required
* Second pump can be any type

Inlet Inlet
The pump configurations

Fig. 1 Fig. 2 Fig. 3

Bearing Type Pumps Bushing Type Pumps Add-A-Pump Type
Pump 1 Pump 2 Pump 1 Pump 2 Pump 1 Pad Mount
MHP 75 MHP 50 MHP 365 MHP 330 MHP 365 "A" PAD
MHP 75 MHP 30 MHP 350 MHP 315 MHP 365 "B" PAD
MHP 76 MHP 51 MHP 330 MHP 315 MHP 350 "A" PAD
MHP 76 MHP 31 MHP 350 "B" PAD
MHP 50 MHP 50
MHP 50 MHP 30 For Piggyback units please consult the factory
MHP 51 MHP 51
MHP 51 MHP 31
MHP 30 MHP 30
MHP 31 MHP 31

80 YOUR SOURCE FOR HIGH QUALITY HYDRAULIC GEAR PRODUCT

 WARRANTY POLICY AND PROCEDURES
WARRANTY
Metaris Inc. and Metaris Corp. hereinafter “Metaris”, warrants all of its product to be free from
defects in material and workmanship under normal operating conditions and proper application
in accordance with the specifications for operation as described by the manufacturer for the
period of twelve (12) months in service.

LIMITATIONS ON WARRANTY
This Warranty is expressly in lieu of any other warranties expressed or implied. Buyers sole and
exclusive remedy under this Warranty shall be limited to the repair, replacement or exchange of
warranted products at our option, F.O.B. our factory, or designated service center.

No special, incidental, consequential or other damage shall be recoverable. Metaris shall not be
liable for consequential damages or contingent liabilities including, but not limited to, loss of life,
personal injury, loss of crops, loss due to water or fire damage, loss of business income, down
time costs and trade or other commercial loss arising out of failure of the product. Metaris will in
no event be liable for any sum in excess of the price received by it for the product for which
liability is claimed or asserted.

No products shall be returned without prior authorization from Metaris. Buyers and their Agents
shall prepay all transportation charges for the return of such products to a Metaris location or
designated service center. There will be no acceptance of any charges for labor and/or parts
incidental to the removal or remounting of products repaired or replaced under Warranty.

The above Warranty does not cover conditions over which Metaris has no control, including,
without limitation, contamination, pressure in excess of recommended maximum, products
damaged or subject to accident abuse or misuse after shipment from our factory, products
altered or repaired by anyone other than Metaris personnel, authorized Metaris factory personnel
or persons so designated in writing by Metaris prior to commencement of said work.

A return goods authorization number must be obtained from Metaris or a Metaris authorized
service center, or a Metaris authorized agent prior to any products being returned for Warranty.

Our growing range of pumps and components also includes:

VANE PTO PISTON

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