SR Module 0.5 ～ 10 SRF Module 0.

5 ～ 10
Steel Racks Racks
Steel Racks with Machined Ends Racks with Machined Ends
Specifications Specifications

Precision grade KHK R 001 grade 4 Precision grade KHK R 001 grade 4

Gear teeth Standard full depth Gear teeth Standard full depth A
A B
B

SW

SW
πm πm
Gears

Gears
Pressure angle 20° Pressure angle 20°
Spur

Spur
Material S45C Material S45C

C
D

C
D
Heat treatment － Heat treatment －

Tooth hardness (less than 95HRB) Tooth hardness (less than 95HRB)
Helical

Helical
Gears

Gears
SW: Sawing surface R1 Surface treatment Black oxide coating
RF
Surface treatment Black oxide coating

Effective Total length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight Total length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
Catalog No. Module
no. of teeth
Shape Catalog No. Module No. of teeth Shape
A B C D Bending strength Surface durability Bending strength Surface durability (kg) A B C D Bending strength Surface durability Bending strength Surface durability (kg)

SR0.5-100 m0.5 62 R1 101 5 12 11.5 240 39.6 24.4 4.04 0.046 SRF0.5-300 m0.5 191 RF 300.02 5 12 11.5 240 39.6 24.4 4.04 0.14
Internal

Internal
Gears

Gears
SR0.8-100 m0.8 38 R1 101 8 12.3 11.5 613 108 62.5 11.0 0.073 SRF0.8-300 m0.8 119 RF 299.08 8 12.3 11.5 613 108 62.5 11.0 0.22
SR1-100 29 98 0.085 SRF1-300 96 301.59 0.26
SR1-300 m1 94 R1 303 10 12 11 958 177 97.7 18.0 0.26 SRF1-500 m1 159 RF 499.51 10 12 11 958 177 97.7 18.0 0.43
SR1-500 159 505 0.44 SRF1-1000 318 999.03 0.86
SR1.5-100 20 101 0.22 SRF1.5-300 64 301.59 0.66
SR1.5-300 m1.5 62 R1 303 15 20 18.5 2160 421 220 42.9 0.66
Racks

Racks
SRF1.5-500 106 499.51 1.09
SR1.5-500 105 505 1.10
SRF1.5-1000 m1.5 212 RF 999.03 15 20 18.5 2160 421 220 42.9 2.18
SR2-100 14 98 0.35 SRF1.5-1500 320 1507.96 3.28
SR2-300 m2 46 R1 303 20 25 23 3830 775 391 79.0 1.09
SR2-500 79 505 1.82 SRF1.5-2000 435 2049.88 4.47
SR2.5-100 11 100 0.54 SRF2-300 48 301.59 1.09
CP Racks

CP Racks
& Pinions

& Pinions
SR2.5-300 m2.5 37 R1 303 25 30 27.5 5990 1240 611 127 1.64 SRF2-500 80 502.65 1.82
SR2.5-500 63 505 2.73 SRF2-1000 m2 160 RF 1005.31 20 25 23 3830 775 391 79.0 3.63
SR3-100 9 101 0.76 SRF2-1500 240 1507.96 5.45
SR3-300 m3 30 R1 303 30 35 32 8620 1820 879 186 2.28 SRF2-2000 326 2048.31 7.40
SR3-500 52 505 3.81 SRF2.5-300 38 298.45 1.61
SR4-100 6 98 1.26 SRF2.5-500 64 502.65 2.71
m4 R1 40 45 41 15300 3330 1560 339
SR4-500 39 505 6.50
Gears

Gears
Miter

Miter
SRF2.5-1000 m2.5 128 RF 1005.31 25 30 27.5 5990 1240 611 127 5.43
SR5-110 5 108 1.91 SRF2.5-1500 192 1507.96 8.14
m5 R1 50 50 45 24000 5300 2440 540
SR5-500 31 505 8.92 SRF2.5-2000 261 2049.88 11.1
SR6-110 4 111 2.82
m6 R1 60 60 54 34500 7740 3520 789 SRF3-300 32 301.59 2.27
SR6-500 25 505 12.8
SRF3-500 53 499.51 3.76
SR8-130 m8 3 R1 123 75 75 67 44200 10400 4510 1060 4.85
SRF3-1000 m3 106 RF 999.03 30 35 32 8620 1820 879 186 7.53
Gears

Gears
Bevel

Bevel
SR10-160 m10 3 R1 155 90 80 70 66300 16100 6770 1640 7.67 SRF3-1500 160 1507.96 11.4
[Caution on Product Characteristics] ① T he allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see Page 190 SRF3-2000 217 2045.17 15.4
for more details. SRF4-500 40 502.65 6.47
② T he backlash of racks differ depending on the size of the mating pinion. Please calculate the backlash from the backlash value of the SRF4-1000 80 1005.31 12.9
mating pinion. Also, please refer to the data in the section called 'Backlash of Rack Tooth (Amount of Tooth Thinning)' on Page 193. m4 RF 40 45 41 15300 3330 1560 339
SRF4-1500 120 1507.96 19.4
Screw

Screw
Gears

Gears
SRF4-2000 163 2048.31 26.4
[Caution on Secondary Operations] ①P lease read “Caution on Performing Secondary Operations” (Page 194) when performing modifications and/or secondary operations
for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available. SRF5-500 32 502.65 8.88
② If gear tooth hardening, or thermal refining, is applied, the decarburization layer (approx. 0.5 mm thickness) on the rectangular sur- SRF5-1000
m5
64
RF
1005.31
50 50 45 24000 5300 2440 540
17.8
faces cannot have the hardness you designate. SRF5-1500 96 1507.96 26.6
Products Gearboxes Gear Pairs

Products Gearboxes Gear Pairs

SRF5-2000 130 2042.04 36.1
Worm

Worm
SRF6-500 26 490.09 12.5
SRF6-1000 53 999.03 25.4
m6 RF 60 60 54 34500 7740 3520 789
SRF6-1500 80 1507.96 38.4
SRF6-2000 108 2035.75 51.8
SRF8-500 20 502.66 19.8
m8 RF 75 75 67 44200 10400 4510 1060
SRF8-1000 40 1005.31 39.7
Bevel

Bevel
Recommended Mating Pinions SRF10-1000
[Caution on Product Characteristics]
m10 32 RF 1005.31 90 80 70 66300 16100
① T he allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see Page 190
6770 1640 49.7

for more details.

② T he backlash of racks differ depending on the size of the mating pinion. Please calculate the backlash from the backlash value of the
mating pinion. Also, please refer to the data in the section called 'Backlash of Rack Tooth (Amount of Tooth Thinning)' on Page 193.
Other

Other
[Caution on Secondary Operations] ①P lease read “Caution on Performing Secondary Operations” (Page 194) when performing modifications and/or secondary operations
for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② If gear tooth hardening, or thermal refining, is applied, the decarburization layer (approx. 0.5 mm thickness) on the rectangular sur-
faces cannot have the hardness you designate.

SS Steel Spur Gears

Please see Page 74 for more details.

216 You can download CAD data (DXF format) of KHK Products from the Web Catalog. 217