BB Sintered Metal Bushings

Sintered Metal Bushings

When using the injection molded bevel

L
Bevel Gears
gear as an idler gear and a shaft diameter
Gears

Gears
Spur

Spur
smaller than the inside diameter of the
molded gear, please press fit one of the

D
d
MHP MBSG SBSG MBSA/MBSB SBS SB SBY
following standard bushings. High-Ratio Hypoid Gears Ground Spiral Bevel Gears Ground Spiral Bevel Gears Finished Bore Spiral Bevel Gears Spiral Bevel Gears Bevel Gears Bevel Gears
Gear Ratio 15~60 Gear Ratio 2 Gear Ratio 1.5~3 Gear Ratio 1.5~3 Gear Ratio 1.5~4 Gear Ratio 1.5~4 Gear Ratio 2~4
Helical

Helical
Gears

Gears
T8

Inner dia. Outside dia. Length

Catalog Number Gear example
d +0.02
+0.02
0 0 -0.01 D - 0.01 -0.01
+0.02 +0.02 0
L -0.3
0
Material: SCM415 Material: SCM415 Material: S45C Material: SCM415 Material: S45C Material: S45C Material: S45C
Internal

Internal
m 1, 1.5 Page 342 m 2~4 Page 346 m 2~4 Page 348 m 2~6 Page 350 m 1~5 Page 354 m 1~6 Page 358 m 5~8 Page 358
BB30507 3 5 7 DM0.8
Gears

Gears
BB30608 3 6 8 DM1 SB SUB PB DB BB Nissei KSP
Steel Bevel Gears & Pinion Shafts Stainless Steel Bevel Gears Plastic Bevel Gears Injection Molded Bevel Gears Sintered Metal Bushings Ground Spiral Bevel Gears
BB40609 4 6 9 DM1
Gear Ratio 5 Gear Ratio 1.5~3 Gear Ratio 1.5~3 Gear Ratio 2 Gear Ratio 1~2
BB50814 5 8 14 DM1.5
Material: Oil-free copper alloy
Racks

Racks
Material: S45C Material: SUS303 Material: MC901 Material: Duracon (R) (M90-44) Material: Oil-free copper alloy Material: SCM415
m 1.5~3 Page 362 m 1.5~3 Page 364 m 1~3 Page 366 m 0.5~1 Page 368 φ 5~6 Page 368 m 1.5~6 Page 370
CP Racks &

CP Racks &
Pinions

Pinions
Gears

Gears
Miter

Miter
Gears
Gears
Bevel

Bevel
Screw
Screw

Gears
Gears

Catalog Number of KHK Stock Gears

The Catalog Number for KHK stock gears is based on the simple formula listed below. Please order KHK gears by specifying
the Catalog Numbers.

Worm
Gears
Worm
Gears

(Example) Bevel Gears

M BS G 2 - 40 20 R
Gearboxes

Gearboxes
Direction of Helix (Right) Material Type
No. of teeth of mating gears (20) S S45C B Straight Bevel Gears
M SCM415 BS Spiral Bevel Gears
No. of Teeth (40)
SU Stainless Steel HP High-Ratio Hypoid Gears
Products

Products
Module (2) P MC901
Other

Other
Other Products (Ground Gears) D Polyacetal Other Information
G Ground Gears
Type (Spiral Bevel Gears)
Material (SCM415)

Product Precautions Page 306

334 335
 Bevel Gears Bevel Gears KHK Technical Information

Features Selection Hints

KHK stock bevel gears are available in two types, spiral bevel gears and straight bevel gears, in gear ratios of 1.5 through 5, Please select the most suitable products by carefully considering the characteristics of items and contents of the product
and are offered in a large variety of modules, numbers of teeth, materials and styles. The following table lists the main features tables. It is also important to read all applicable "CAUTION" notes shown below before the final selection.
for easy selection.
Tooth Precision 1. Caution in Selecting the Mating Gears
Heat Secondary
Type

Catalog Number Module Gear Ratio Material Surface JIS B 1704: Features Basically, KHK stock bevel gears should be selected as
Treatment Operations
Finish 1978 shown in the catalog in pairs (e.g. MBSG2-4020R should
Hypoid gears that have been tempered mate with MBSG2-2040L). But, for straight tooth bevel
Hypoid

Carburized
Gear

MHP 1, 1.5 15~60 SCM415 Note 1

Cut 3 △ and hardened that are capable of rapid gears, there is some interchangeability with different series.
deceleration.
For plastic bevel gears, we recommend metal mating gears
Gears that have been hardened and ground that has
Carburized Ground for good heat conductivity.
MBSG 2~4 2 SCM415 Note 1
1 △ excellent accuracy, strength and abrasion resistance.
Secondary operations are possible except for the teeth.
Gear teeth Gears that has been hardened and ground with a
△
Spiral Bevel Gears

SBSG 2~4 1.5~3 S45C induction Ground 2 good balance of accuracy, wear resistance and cost.
hardened Secondary operations are possible except for the teeth.
Gears that have been hardened and ground that has grade-0 Right (R) Left (L)
Carburized Ground △
KSP 1.5~6 1~2 SCM415 0 accuracy, strength, abrasion resistance and quietness.
■ Selection Chart for Straight Bevel Gears ( ○ Allowable × Not allowable) ■ Selection Chart for Spiral Bevel Gears ( ○ Allowable × Not allowable)
Note 1
Secondary operations can be given except for the teeth.
Gears that have been fully hardened that
Gears SB Gears MBSA
MBSA/MBSB 2~6 1.5~3 SCM415 Carburized Cut 4 × have excellent strength and wear resistance.
SBY SUB PB DB MBSG SBSG SBS
Pinion Pinion MBSB
Can be used in the finished shape.
Gear teeth Gears that have been hardened with SB·SBY ○ ○ ○ × MBSG ○ × × ×
SBS 1~5 1.5~4 S45C induction Cut 4 △ excellent wear resistance. Secondary SUB ○ ○ ○ × SBSG × ○ × ×
hardened operations are possible except for the teeth.
PB ○ ○ ○ × MBSA/MBSB × × ○ ×
Many lineups are available at a low price.
Straight Bevel Gears

SB/SBY 1~8 1.5~5 S45C — Cut 3 ○ DB × × × ○ SBS × × × ○

The teeth can be additionally hardened.

SUB 1.5~3 1.5~3 SUS303 — Cut 3 ○ Stainless steel gears with rust resistance.
2. Caution in Selecting Gears Based on Gear Strength
PB 1~3 1.5~3 MC901 — Cut 4 ○ Nylon gears can be used with no lubrication. The gear strength values shown in the product pages were computed by assuming the application environment in the table
below. Therefore, they should be used as reference only. We recommend that each user computes their own values by
Duracon (R) Injection Low-priced gears made through injection
DB 0.5~1 2 — 6 △ applying the actual usage conditions.
(M90-44) NOTE 2 Molded molding. Suitable for light loads.

[NOTE 1]  lthough these are carburized products, secondary operations can be performed as the bore
A
○ Possible △ Partly possible × Not possible
and the hub portions are masked during the carburization.

[NOTE 2]
However, note that high hardness (HRC40 at maximum) occurs in some cases.
"Duracon (R)" is a registered trademark of Polyplastics Co., Ltd. in Japan as well as other countries.
■ Calculation of Bending Strength of Gears
Catalog Number MBSG
SB NOTE 2
Application Examples Item
MBSA
MBSB
SBSG/SBS
SBY
SUB PB DB

KHK stock bevel gears are used as gears for power transmission of intersecting axes in various devices. Formula NOTE 1 Formula of bevel gears on bending strength (JGMA403-01) The Lewis formula
No. of teeth of mating gears No. of teeth of the mating gear of the set —
■ Differential Gear Mechanism Example ■ SHESCO 2WD Bike Rotational Speed of Pinion 100rpm (600rpm for MBSG and SBSG) 100rpm
Design Life (Durability) Over 107 cycles —
Impact from motor Uniform load Allowable bending stress (kgf/mm2)
Impact from load Uniform load m 0.5 4.0
m 0.8 4.0
Direction of load Bidirectional load (calculated with allowable bending stress of 2/3) 1.15
m 1.0 3.5
(40°C with No (40°C with
Allowable bending stress at root σ Flim (kgf/mm )
2
47 21 19 (24.5) 10.5 Lubrication) Grease
Safety factor KR 1.2 Lubrication)

■ Calculation of Surface Durability (Except where it is common with bending strength)

Formula NOTE 1 Formula of bevel gears on surface durability (JGMA404-01)
Kinematic viscosity of lubricant 100cSt (50°C)
Gear support Shafts & gear box have normal stiffness, and gears are supported on one end
Allowable Hertz stress σ Hlim (kgf/mm2) 166 90 49 (62.5) 41.3
Safety factor CR 1.15
[NOTE 1]  he gear strength formula is based on JGMA (Japanese Gear Manufacturers Association) specifications, "MC Nylon Technical Data" by Mitsubishi
T
Chemical Advanced Materials and "Duracon (R) Gear" by Polyplastics Co. The units for the rotational speed (rpm) and the stress (kgf/mm2) are adjusted
to the units needed in the formula.
[NOTE 2] Since SB Bevel Pinion Shafts are thermally refined, the allowable tooth-root bending stress and allowable hertz stress are the value shown in
parentheses.
Image provided by: PK Design SB Bevel Gears are used in the driving components in both the front and rear wheels

336 337
 Bevel Gears Bevel Gears KHK Technical Information

Product Precautions
Common Notes DB Injection Molded Bevel Gears

[Caution on Product Characteristics] [Caution on Product Characteristics]

(1) T he allowable torque shown in the table are calculated values according to the assumed usage conditions. Please see Page (1) The bore tolerance is -0.05 to -0.30, but it may be slightly higher at the center of the hole.
337 for more details. (2) For the dimensional accuracy of each part, see the dimensional tolerance of molded items on Page 369.
(2) Dimensions of the outside diameter, the total length and crown to back length are all theoretical values, and some [Caution on Secondary Operations]
differences will occur due to the corner chamfering of the gear tips.
(1) As it is a molded item, bubbles may form inside the material. Avoid performing secondary operations.
(3) These bevel gears produce axial thrust forces. Please see Page 340 for more details.
(4) Variations in temperature or humidity can cause dimensional changes in plastic gears, including tooth diameter, bore, and backlash.
The accuracy and tolerances shown in the catalog are values obtained when machining is performed. KSP_U Nissei Ground Spiral Bevel Gears
(5) K eyways are made according to JIS B1301 standards, Js9 tolerance. Also note that keyway tooth position alignment is not performed.
(6) For products having a tapped hole, a set screw is included. (excludes B7) [Caution on Product Characteristics]
(1) The allowable torque is the value at RPM 600. For other data, see the Transmission Capacity Table.
[Caution on Secondary Operations]
(1) Please read "Cautions on Performing Secondary Operations" (Page 340) when performing modifications and/or secondary
operations for safety concerns.
(2) Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the
bottom land (approx. 2 to 3 mm).
(3) In the illustration, the area surrounded with line is masked during the carburization process (max. HRC40 or so) and
can be modified.

MHP High Ratio Hypoid Gears

[Caution on Product Characteristics]

(1) Radial and thrust load coefficients are the factors used for calculation of those loads.
  As shown in the figure B8, CW and CCW stand for clockwise and counterclockwise rotation. A plus sign means that the
two gears in a set move away each other when load is applied. A minus sign means that two gears in a set approach each
other when load is applied.
Use gear calculation software GCSW.

MBS(A,B) F inished Bore Spiral Bevel Gears

[Caution on Product Characteristics]

(1) The keyway tolerance is the value before hardening.
[Caution on Secondary Operations]
(1) No secondary operations can be performed on these finished gears due to the applied carburizing process.

SBS Spiral Bevel Gears

[Caution on Product Characteristics]

(1) The bore may slightly vary due to the effect of heat treatment. When using with the indicated hole diameter, provide
machining with a reamer or the like before use.

SB Bevel Gears

[Caution on Product Characteristics]

(1) For the handling conveniences, the BT series has the tapped holes on the holding surface. Please see Page 340 for L and
tap sizes.

SBY Spiral Bevel Gears

[Caution on Product Characteristics]

(1) For the handling conveniences, the BT series has the tapped holes on the holding surface. Please see Page 340 for L and
tap sizes.

PB Plastic Bevel Gears

[Caution on Product Characteristics]

(1) To reduce heat generation, it is recommended to mate them with steel gears.

338 339
 Bevel Gears Bevel Gears KHK Technical Information

Application Hints
In order to use KHK stock bevel gears safely, carefully read the Application Hints before proceeding. ④ When installing MBSA or MBSB spiral bevel gears 4. Cautions on Starting
If there are questions or you require clarifications, please contact our technical department or your nearest distributor. produced in B7 style (ring gear), always secure the
E-mail: info@khkgears.net gears onto the mounting base with taper pins to absorb ① Check the following items before starting.
the rotational loads. It is dangerous to secure with bolts • Are the gears fastened securely?
1. Cautions on Handling ⑦ When induction-hardening S45C products, thermal • Is there uneven tooth contact?
only.
stress cracks may appear. Also, note that the precision • Is there adequate backlash?
① KHK products are packaged one by one to prevent grade of the product declines by 1 or 2 grades, as (Be sure to avoid zero-backlash.)
scratches and dents, but if you find issues such as rust, deformation on material may occur. If you require Knock pin • Has proper lubrication been supplied?
scratches, or dents when the product is removed from tolerance for bore or other parts, machining is necessary ② If gears are exposed, be sure to attach a safety cover
the box after purchase, please contact the supplier. after heat treatment. to ensure safety. Also, be careful not to touch rotating
② Depending on the handling method, the product may ⑧ For the handling conveniences, the SB and SBY series
Bevel Gear
gears.
become deformed or damaged. Plastic gears and ring listed below have the tapped holes (180° apart, 2 ③ If there is any abnormality such as noise or vibration
gears deform particularly easily, so please handle with places) on the holding surface. We appreciate your
Mounting base
during startup, stop the operation immediately and
care. understanding. check the assembly condition such as tooth contact,
2. Caution on Performing Secondary Operations Please pay attention to the machining position. eccentricity and looseness.
⑤ The recommended assemble distance tolerance of KHK
① If reboring, it is important to pay special attention to Catalog Number L(mm) Tap Size stock bevel gears is H7 for ground gears and H8 for cut
locating the center in order to avoid runout. SB6-4515 130 M10 deep 20 gears. Mounting distance error, offset error and shaft
② The reference datum for gear machining is the bore. SBY8-4020 160 M10 deep 20 angle error must be minimized to avoid excessive noise
Therefore, use the bore for locating the center. If it is too and wear. Inaccurate assembly will lead to irregular
SBY8-4515 210 M10 deep 20
difficult to do for small bores, the alternative is to use noises and uneven wear. Various conditions of tooth
one spot on the bore and the runout of the side surface. SBY5-6015 160 M10 deep 20 contact are shown below.
③ If reworking using scroll chucks, we recommend the use SBY6-6015 220 M10 deep 20 Also, when changing the normal direction backlash,
of new or rebored jaws for improved precision. Please adjust the mounting distance according to the amount
exercise caution not to crush the teeth. of axial movement shown in the table below so as not to
change the tooth contact.

Gear Ratio Normal direction Travel in axial direction Correct Tooth Contact
3. Points of Caution during Assembly
(Reduction Ratio) backlash Pinion Gears
● When assembled correctly, the contact will occur on both gears in the
① Since bevel gears are cone shaped, they produce axial 1.5 0.81× jn 1.22× jn
middle of the flank and center of face width but somewhat closer to the toe.
thrust forces. Especially for spiral bevel gears, the 2 0.65× jn 1.31× jn
directions of thrust change with the hand of helix and
2.5 0.54× jn 1.36× jn
the direction of rotation. This is illustrated below. The
bearings must be selected properly to be able to handle 3 jn 0.46× j n 1.39× jn

Lathe Operations these thrust forces. For details, use gear calculation 4 0.35× jn 1.42× jn
software GCSW. 5 jn jn
0.29× 1.43×
④ For items with induction hardened teeth, the hardness is Direction of Rotation and Thrust Force Thrust Force 15 or more 1.4× jn ÷ Gear Ratio 1.40× jn Center contact closer to toes
high near the tooth root. When machining the front face, Direction of Rotation
the machined area should be 4 to 6mm smaller than the L L
holding surface diameter dimensions.
Drive Incorrect Tooth Contact
R R
■ Mounting Distance Error ■ Offset Error ■ Shaft Angle Error
● When the mounting distance of the ● When the pinion shaft is offset, the contact ● When there is an angular error of shafts,
L L
pinion is incorrect, the contact will surface is near the toe of one gear and the gears will contact at the toes or heels
Drive occur too high on the flank on one near the heel of the other. depending on whether the angle is greater
gear and too low on the other. or less than 90°.
R R
Low contact Heel contact
High contact
Error
Error
Lathe Operations [NOTE] Bevel gears with the gear ratio 1.57 or less, produce a thrust force
Error

which is the same as miter gears. For details, please see Page 308.
⑤ For tapping and keyway operations, see the examples
given in “Caution on Performing Secondary Operations” ② If a gear is mounted on a shaft far from the bearings, the Toe contact
Toe contact

in KHK Stock Spur Gear section. When cutting keyways, shaft may bend. We recommend designing bevel gears High contact Toe contact
Heel contact
to avoid stress concentration, always round the corners. to be as close to the bearings as possible. Design the Low contact
Error
⑥ PB plastic bevel gears are susceptible to changes due gear box, shaft and bearing with high rigidity. Error
Error

to temperature and humidity. Dimensions may change ③ Be sure to fasten the bevel gear to prevent the gears
between, during, and after re-machining operations. from moving, as thrust acts on it while rotating.
Heel contact

340 341
 MHP Hypoid Gears
High-Ratio Hypoid Gears

■ Features of MHP High Ratio Hypoid Gears ■ Variations in tooth contact due to poor alignment of gears
A pair of MHP high-ratio hypoid gears are able to produce an amazing reduction of speed of 60:1 in one stage.
If the gear engagement position is out of the normal position, variations in tooth contact, as illustrated below, may appear.
Gears

Gears
Spur

Spur
1. Total-cost reduction
The MHP provides a compact gearing
body replacing several stages of
Efficiency
Comparison of the efficiency of MHP High Ratio Hypoid Gear and Worm Gear
Helical

Helical
Gears

Gears
reduction gears. This reduces the (1) Tooth contact in case of a shaft-angle error (2) Tooth contact in case of a shaft-offset error
cost sharply.
2. High efficiency
Compared to worm gear drives, the Toe contact
Heel contact
Internal

Internal
MHP has less sliding contact. The close to tooth tip
Gears

Gears
Toe Toe contact
contact
resulting higher efficiency allows the Worm Gears
Toe contact close to
tooth root
Error
use of smaller motors. (See graph on Toe contact
Toe contact
close to tooth tip

the right)
3. High rigidity
Racks

Racks
Error
The carburized hypoid gears lead to Heel contact
close to tooth root
(Offset is increased)

smaller size than comparable worms

gears.
4. Compact gear assembly
CP Racks &

CP Racks &
Pinions

Pinions
The size of the gear housing is nearly Toe contact
close to tooth root
the same as outer diameter of the
large gear. (See the diagrams below)
■ How to determine the radial and thrust loads Error
Toe contact
close to
Heel contact tooth tip
Gears

Gears
Before using the MHP high-ratio hypoid gears, be sure to confirm the Heel
Miter

Miter
Error
contact Heel contact
(Offset is reduced)

direction of radial and thrust loads. Following equations are used to

Comparison of MHP and Worm Gear
compute these loads. The radial and thrust load coefficients are given
Worm Gears on the product pages. Heel contact
Heel contact
close to tooth tip
close to tooth root
Gears

Gears
Bevel

Bevel
Position
Heel contact
Shortening
Radial load calculation
WRP : Radial load on the pinion or L(N)
n
Screw

Screw
Gears

Gears
WRP = WKP × TG × z (3) Tooth contact in case of a pinion set position error (4) Tooth contact in case of a gear set position error
Raw material WKP : Radial load coefficient of pinion or L (given on the product pages)
Strength TG : Torque of gear or R(N·m) Heel contact
Making close to tooth root
the body n : Number of teeth of pinion or L Toe contact
Material
smaller z : Number of teeth of gear or R
Worm
Gears

Worm
Gears
Toe contact
close to Error
Induction hardened tooth tip

Material + Hardened Toe

WRG : Radial load on the gear or R(N) contact

WRG = WKG × TG
Efficiency WKG : Radial load coefficient of gear or R (given on the product pages)
Gearboxes

Gearboxes
Lowering
the motor TG : Torque of gear or R(N·m) Heel contact
capacity Toe contact close to tooth tip
close to tooth root Heel contact
Error
Heel contact

Thrust load
Products

Products
WXP : Thrust load on the pinion or L(N)
Other

Other
n
WXP = WNP × TG × z
WNP : Thrust load coefficient of pinion or L (given on the product page) Toe contact
close to tooth tip Heel contact

TG : Torque of gear or R(N·m) Heel contact

Error
Toe
n : Number of teeth of pinion or L Toe contact
close to
Heel contact
close to tooth root
contact
tooth root
z : Number of teeth of gear or R Error

WXG : Thrust load of gear or R(N)

WXG = WNG × TG
Toe contact
WNG : Thrust load coefficient of gear or R (given on the product pages)
Heel contact
TG : Torque of gear or R(N·m) close to tooth tip

342 343
 MHP Module 1, 1.5 Hypoid Gears
High-Ratio Hypoid Gears
E
Specifications
F
Precision
grade JIS B 1704: 1978 grade 3 H
E

(J)
Gear teeth Gleason F
Pressure I
20°*
Gears

Gears
(J) I
Spur

Spur
angle G
CW CCW
Material SCM415

C(D)
G

B
K

A
Heat

A
treatment Tooth area carburized

L
Tooth
hardness 60 to 63HRC
Helical

Helical
* 22°30' for MHP1.5-0453R/3045L and
Gears

Gears
MHP1.5-0451R/1045L B8 B9

Reduction Nominal Actual No. of Direction of Bore/Shaft Dia. Hub dia. Pitch dia. Outside dia. Mounting distance Total length Hub width Length of bore and shaft Face width Holding surface dia. Offset Radial load coefficient Thrust load coefficient Backlash Weight
Catalog Number ratio module module teeth spiral
Shape Catalog Number
A (Bore: H7/Shaft: h7) B C D E F H I (J) K L CW CCW CW CCW (mm) (kg)
Internal

Internal
MHP1-0453R 45 R B9 12 30 48 48 19 16.3 7 14 35.1 48.48 -37.67 13 31.74 0.15 MHP1-0453R
Gears

Gears
15 m1 1.067 (6) 10 0.05~0.15
MHP1-3045L 3 L B8 22.1 — 10.3 10.3 127 113 — 94 — 147.3 523.74 969.92 -831.16 0.29 MHP1-3045L
MHP1.5-0453R 45 R B9 14 40 78 78 28 23.7 10 20 56.5 26.78 -18.67 8.98 21.19 0.50 MHP1.5-0453R
15 m1.5 1.733 (10) 18 0.10~0.20
MHP1.5-3045L 3 L B8 31.1 — 17.6 17.6 170 148 — 116 — 100.09 338.45 566.72 -466.63 0.73 MHP1.5-3045L
MHP1.5-0603R 60 R B9 20 50 98 98 33 28.7 13 25 76.8 20.44 -16.54 7.15 13.95 0.94 MHP1.5-0603R
20 m1.5 1.633 (10) 22 0.10~0.20
MHP1.5-3060L 3 L B8 36.1 — 15.7 15.7 199 168 — 135 — 119.32 302.18 577.56 -511.77 1.15 MHP1.5-3060L
Racks

Racks
MHP1-0602R 60 R B9 12 34 63 63 21 17.8 8 16 46.4 33.59 -24.15 8.21 24.77 0.29 MHP1-0602R
30 m1 1.05 (8) 18 0.05~0.15
MHP1-2060L 2 L B8 22.1 — 12.8 12.8 134 120 — 94 — 186.59 784.31 1461.23 -1248.6 0.28 MHP1-2060L
MHP1-0451R 45 R B9 12 30 48 48 19 16.5 7 14 34.9 48.04 -35.58 11.13 34.11 0.16 MHP1-0451R
45 m1 1.067 (6) 14 0.05~0.15
MHP1-1045L 1 L B8 20.1 — 10.1 10.1 115 104 — 85 — 400.81 1579.79 3014.6 -2605.26 0.22 MHP1-1045L
CP Racks &

CP Racks &
MHP1.5-0451R 45 R B9 14 40 78 78 28 23.9 10 20 56 26.36 -16.04 6.88 22.02 0.50 MHP1.5-0451R
Pinions

Pinions
45 m1.5 1.733 (10) 25 0.10~0.20
MHP1.5-1045L 1 L B8 26.1 — 18.3 18.3 152 138 — 102 — 233.59 1034.08 1755.84 -1439.58 0.48 MHP1.5-1045L
MHP1-0601R 60 R B9 12 34 63 63 21 17.9 8 16 46.3 33.34 -23.12 7.41 25.14 0.29 MHP1-0601R
60 m1 1.05 (8) 20 0.05~0.15
MHP1-1060L 1 L B8 22.1 — 12.9 12.9 134 122 — 94 — 357.61 1564.81 2936.72 -2514.09 0.28 MHP1-1060L
MHP1.5-0601R 60 R B9 20 50 98 98 33 28.2 13 25 76.8 22.63 -17.19 5.82 15.81 0.94 MHP1.5-0601R
60 m1.5 1.633 (10) 30 0.10~0.20
— — —
Gears

Gears
MHP1.5-1060L 1 L B8 31.1 17.7 17.7 175 151 116 303.06 974.4 1912.11 -1675.65 0.77 MHP1.5-1060L
Miter

Miter
Gears

Gears
Bevel

Bevel
Product Precautions Page 338
Screw

Screw
Gears

Gears
■ MHP allowable transmission torque table
Reduction Rotational speed of pinion / Allowable torque (Gear side)
Combination Unit
ratio 600rpm 900rpm 1200rpm 1800rpm 3000rpm
Worm
Gears

Worm
Gears
MHP1-0453R N·m 10.3 9.61 8.82 7.35 3.72
15
MHP1-3045L
■ Helix Hands and Offset Position kgf·m 1.05 0.98 0.9 0.75 0.38
MHP1.5-0453R N·m 41.2 38.2 35.3 29.4 14.7
15
MHP1.5-3045L kgf·m 4.2 3.9 3.6 3 1.5
Gearboxes

Gearboxes
MHP High Ratio Hypoid Gears are designed to be right hand helix for gears, left hand helix for
pinions. The opposite helix hand gears are not available for these products. Also, the offset MHP1.5-0603R N·m 82.4 76.7 69.2 54.9 —
20
position is already set, so please refer to the illustration bellow when designing or assembling. MHP1.5-3060L kgf·m 8.4 7.82 7.06 5.6 —
MHP1-0602R N·m 24.1 22.5 20.7 17.3 8.62
30
MHP1-2060L kgf·m 2.46 2.29 2.11 1.76 0.88
Products

Products
MHP1-0451R N·m 11.3 10.5 9.61 8.04 4.02
Other

Other
45
MHP1-1045L kgf·m 1.15 1.07 0.98 0.82 0.41
MHP1.5-0451R N·m 46.6 43.2 39.9 33.2 16.7
45
MHP1.5-1045L kgf·m 4.75 4.41 4.07 3.39 1.7
MHP1-0601R N·m 25.3 23.4 21.7 18 9.02
60
MHP1-1060L kgf·m 2.58 2.39 2.21 1.84 0.92
MHP1.5-0601R N·m 93.9 87.2 76.3 54.9 —
60
MHP1.5-1060L kgf·m 9.58 8.89 7.78 5.6 —
The allowable torques in the table are obtained from the results of experimentation lubricated with Kingstar SG-0
(NIHON GREASE).

344 Contact us on the website! 345

 MBSG Module 2~4 Ground Spiral Bevel Gears
Ground Spiral Bevel Gears
E
Specifications
F J
Precision K
grade JIS B 1704: 1978 grade 1 G
J H G
Gear teeth Gleason G

E
G
Pressure
20°

F
Gears

Gears
I
Spur

Spur
angle

G
I

H
Helix angle 35°
G A

C
B

D
K

A
Material SCM415
Heat B
treatment Tooth area carburized
C
Tooth
Helical

Helical
55 to 60HRC
Gears

Gears
hardness D
B3 B4

Direction of Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth
spiral
Shape Catalog Number
AH7 B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
MBSG2-4020R 40 R B4 15 45 80 81.1 45 31.78 26.1 18 29 52.7 56.5 94.2 5.76 9.61 0.57 MBSG2-4020R
Gears

Gears
m2 14 0.04~0.10
MBSG2-2040L 20 L B3 12 35 40 44.1 55 28.16 16.02 13.75 27 25.39 28.2 47.1 2.88 4.80 0.18 MBSG2-2040L
MBSG2.5-4020R 40 R B4 16 55 100 101.29 50 33.35 26.29 16 30 66.99 108 184 11.0 18.7 1.01 MBSG2.5-4020R
m2.5 17 0.05~0.11
MBSG2.5-2040L 20 L B3 12 43 50 55.12 65 31.01 16.28 13.25 29 29.97 54.1 91.8 5.52 9.37 0.31 MBSG2.5-2040L
2
MBSG3-4020R 40 R B4 20 65 120 121.57 60 39.81 31.57 20 35 80.28 185 318 18.8 32.4 1.64 MBSG3-4020R
m3 20 0.06~0.12
MBSG3-2040L 20 L B3 16 52 60 66.03 80 38.9 21.51 18 36.5 36.56 92.4 159 9.42 16.2 0.56 MBSG3-2040L
Racks

Racks
MBSG4-4020R 40 R B4 25 80 160 162.06 75 48.27 37.06 22 42 106.63 441 778 45.0 79.3 3.55 MBSG4-4020R
m4 27 0.09~0.15
MBSG4-2040L 20 L B3 20 70 80 88.46 100 45.38 22.12 17.5 43 51.25 221 389 22.5 39.7 1.20 MBSG4-2040L
CP Racks &

CP Racks &
Pinions

Pinions
Gears

Gears
Miter

Miter
Gears

Gears
Bevel

Bevel
Product Precautions Page 338
Screw

Screw
Gears

Gears
■ The force applied to the teeth of the spiral bevel gear
■ Mating surface of spiral bevel gears For right-hand drive gear
The table below shows, for spiral bevel gears with an axis angle of
Direction of rotation Meshing tooth surface
Spiral bevel gears have convex and concave tooth surfaces. If Σ = 90°, pressure angle of αn = 20° and spiral angle of βm = 35°,
Worm
Gears

Worm
Gears
of drive gear NOTE 1 Right-hand drive gear Left-hand driven gear the magnitudes of the axial force Fx and radial force Fr where the
the direction of rotation of the drive gear differs, the meshing
tooth surface will also change. The table on the right shows tangential force Ft at the center of the tooth width is 100.
Convex tooth Concave tooth
how to view the convex and concave tooth surfaces and the Clockwise
surface surface
meshing tooth surface with respect to the direction of rotation Thrust force Fx
Gearboxes

Gearboxes
Concave tooth Convex tooth value
of the drive gear. Counterclockwise Radial force Fr
surface surface

Concave tooth surface

For left-hand drive gear (1) Force applied to pinion (2) Force applied to gear
Products

Products
Other

Other
Direction of rotation Meshing tooth surface Meshing Gear Ratio z2/z1 Meshing Gear Ratio z2/z1
tooth tooth
of drive gear NOTE 1 Left-hand drive gear Right-hand driven gear surface 1.0 1.5 2.0 2.5 3.0 4.0 5.0 surface 1.0 1.5 2.0 2.5 3.0 4.0 5.0
Concave tooth Convex tooth Concave 80.9 82.9 82.5 81.5 80.5 78.7 77.4 Concave 80.9 75.8 71.1 67.3 64.3 60.1 57.3
Tooth
Convex tooth surface
Tooth Clockwise
Right-hand spiral Left-hand spiral surface surface tooth surface —18.1 —1.9 8.4 15.2 20.0 26.1 29.8 tooth surface —18.1 —33.6 —42.8 —48.5 —52.4 —57.2 —59.9

Convex tooth Concave tooth Convex —18.1 —33.6 —42.8 —48.5 —52.4 —57.2 —59.9 Convex —18.1 —1.9 8.4 15.2 20.0 26.1 29.8
Counterclockwise
surface surface tooth surface 80.9 75.8 71.1 67.3 64.3 60.1 57.3 tooth surface 80.9 82.9 82.5 81.5 80.5 78.7 77.4

[NOTE 1] The direction of rotation in the table is as seen from the

hub of the gear.

346 Contact us on the website! 347

 SBSG Module 2~4 Ground Spiral Bevel Gears
Ground Spiral Bevel Gears
E
Specifications
F
Precision J
grade JIS B 1704: 1978 grade 2 G K
J H G
Gear teeth Gleason G

E
Pressure
20°
Gears

Gears
angle

G
Spur

Spur
F
I

G
I
Helix angle 35°

H
Material S45C G

C
B

D
K

A
Heat A
treatment Gear teeth induction hardened
B
Tooth
hardness 50 to 60HRC C
Helical

Helical
Gears

Gears
Surface Black oxide coated except for D
B3 B4
treatment ground part

Direction of Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth
spiral
Shape Catalog Number
AH7 B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
SBSG2-3020R 30 R B4 12 35 60 61.6 40 26.6 21.2 15 23 37.56 14.1 14.2 1.44 1.44 0.26 SBSG2-3020R
Gears

Gears
m2 11 0.05~0.11
SBSG2-2030L 20 L B3 10 30 40 43.55 45 24.91 16.18 11.67 22 21.34 9.61 9.44 0.98 0.96 0.13 SBSG2-2030L
SBSG2.5-3020R 30 R B4 15 45 75 77.09 50 33.86 26.56 18 30 45.61 29.0 29.7 2.96 3.03 0.55 SBSG2.5-3020R
m2.5 15 0.06~0.12
SBSG2.5-2030L 20 L B3 12 40 50 54.43 55 30.88 18.98 14.17 28 27.42 19.8 19.8 2.02 2.02 0.28 SBSG2.5-2030L
1.5
SBSG3-3020R 30 R B4 16 50 90 92.21 55 35.34 26.66 17 31 57.14 48.4 50.4 4.94 5.14 0.82 SBSG3-3020R
m3 17 0.07~0.13
SBSG3-2030L 20 L B3 16 45 60 65.58 70 40.17 26.86 20 37 34.71 33.1 33.6 3.37 3.42 0.49 SBSG3-2030L
Racks

Racks
SBSG4-3020R 30 R B4 20 70 120 122.85 75 47.49 37.14 25 40 78.59 106 113 10.8 11.5 1.90 SBSG4-3020R
m4 20 0.10~0.16
SBSG4-2030L 20 L B3 20 60 80 87.34 90 48.17 32.45 23.33 43 46.89 72.2 75.3 7.36 7.68 1.05 SBSG4-2030L
SBSG2-4020R 40 R B4 12 40 80 80.99 45 32.26 25.99 18 27 48.46 25.5 26.7 2.60 2.73 0.51 SBSG2-4020R
m2 15 0.05~0.11
SBSG2-2040L 20 L B3 12 32 40 44.1 60 34.04 21.02 18 32 20.92 12.8 13.4 1.30 1.36 0.19 SBSG2-2040L
CP Racks &

CP Racks &
SBSG2.5-4020R 40 R B4 15 50 100 101.27 55 39.65 31.27 20 34 59.28 51.7 55.1 5.27 5.62 1.06 SBSG2.5-4020R
Pinions

Pinions
m2.5 20 0.06~0.12
SBSG2.5-2040L 20 L B3 12 40 50 55.21 75 43.61 26.3 22.5 40 20.56 25.9 27.6 2.64 2.81 0.42 SBSG2.5-2040L
2
SBSG3-4020R 40 R B4 20 60 120 121.48 65 45.76 36.48 24 38 73.81 84.8 91.9 8.65 9.38 1.67 SBSG3-4020R
m3 22 0.07~0.13
SBSG3-2040L 20 L B3 16 50 60 66.06 90 50.63 31.52 27.5 47 29.61 42.5 46.0 4.33 4.69 0.69 SBSG3-2040L
SBSG4-4020R 40 R B4 20 70 160 162.07 80 53.69 42.07 28 45 102.39 195 217 19.9 22.2 3.33 SBSG4-4020R
m4 28 0.10~0.16
Gears

Gears
SBSG4-2040L 20 L B3 20 60 80 88.5 120 66.24 42.12 35 62 42.78 97.9 109 9.98 11.1 1.53 SBSG4-2040L
Miter

Miter
SBSG2-4515R 45 R B4 12 40 90 90.67 40 30.29 26.01 17 26 59.04 34.8 28.1 3.55 2.87 0.60 SBSG2-4515R
m2 15 0.05~0.11
SBSG2-1545L 15 L B3 10 24 30 34.78 60 29.66 15.8 14 29 19.13 11.2 9.38 1.14 0.96 0.095 SBSG2-1545L
SBSG2.5-4515R 45 R B4 15 50 112.5 113.32 50 38.25 32.47 22 35 72.84 59.0 48.3 6.01 4.93 1.21 SBSG2.5-4515R
3 m2.5 20 0.06~0.12
SBSG2.5-1545L 15 L B3 12 30 37.5 43.36 75 38.27 19.73 17.5 37 20.51 18.9 16.1 1.93 1.64 0.19 SBSG2.5-1545L
Gears

Gears
Bevel

Bevel
SBSG3-4515R 45 R B4 20 60 135 135.99 55 40.59 33.98 20 35 88.18 99.3 82.5 10.1 8.41 1.99 SBSG3-4515R
m3 23 0.07~0.13
SBSG3-1545L 15 L B3 15 38 45 52.08 90 44.98 23.68 21.33 44 28.54 31.8 27.5 3.24 2.80 0.34 SBSG3-1545L
Screw

Screw
Gears

Gears
Product Precautions Page 338

For right-hand drive gear

■ Mating surface of spiral bevel gears ■ The force applied to the teeth of the spiral bevel gear
Worm
Gears

Worm
Gears
Direction of rotation Meshing tooth surface
Spiral bevel gears have convex and concave tooth surfaces. If The table below shows, for spiral bevel gears with an axis angle of
of drive gear NOTE 1 Right-hand drive gear Left-hand driven gear
the direction of rotation of the drive gear differs, the meshing Σ = 90°, pressure angle of αn = 20° and spiral angle of βm = 35°,
tooth surface will also change. The table on the right shows
Gearboxes

Gearboxes
Convex tooth Concave tooth the magnitudes of the axial force Fx and radial force Fr where the
how to view the convex and concave tooth surfaces and the Clockwise
surface surface tangential force Ft at the center of the tooth width is 100.
meshing tooth surface with respect to the direction of rotation
of the drive gear. Concave tooth Convex tooth
Counterclockwise Thrust force Fx
surface surface value
Products

Products
Radial force Fr
Other

Other
Concave tooth surface
For left-hand drive gear

Direction of rotation Meshing tooth surface (1) Force applied to pinion (2) Force applied to gear
of drive gear NOTE 1 Left-hand drive gear Right-hand driven gear Meshing Gear Ratio z2/z1 Meshing Gear Ratio z2/z1
tooth tooth
Concave tooth Convex tooth surface 1.0 1.5 2.0 2.5 3.0 4.0 5.0 surface 1.0 1.5 2.0 2.5 3.0 4.0 5.0
Tooth Tooth Clockwise
Right-hand spiral
Convex tooth surface
Left-hand spiral surface surface
Concave 80.9 82.9 82.5 81.5 80.5 78.7 77.4 Concave 80.9 75.8 71.1 67.3 64.3 60.1 57.3

Convex tooth Concave tooth tooth surface —18.1 —1.9 8.4 15.2 20.0 26.1 29.8 tooth surface —18.1 —33.6 —42.8 —48.5 —52.4 —57.2 —59.9
Counterclockwise
surface surface
Convex —18.1 —33.6 —42.8 —48.5 —52.4 —57.2 —59.9 Convex —18.1 —1.9 8.4 15.2 20.0 26.1 29.8
[NOTE 1] The direction of rotation in the table is as seen from the tooth surface 80.9 75.8 71.1 67.3 64.3 60.1 57.3 tooth surface 80.9 82.9 82.5 81.5 80.5 78.7 77.4
hub of the gear.

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 MBSA/MBSB Module 2~6 Finished Bore Spiral Bevel Gears
Finished Bore Spiral Bevel Gears
Specifications
E J
Precision K
grade JIS B 1704: 1978 grade 4 F
G
Gear teeth Gleason J H K J
G

E
G
Pressure
20°

E
Gears

Gears
F
Spur

Spur
angle

G
G

F
H

G
16
Helix angle 35°

L
I
A G

C
B

D
A
Material SCM415 G L A
L
B
Heat C
treatment Carburized C
Tooth D
Helical

Helical
55 to 60HRC
Gears

Gears
hardness BK B4 B7

Gear No. of Direction Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Keyway Socket head screw Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Ratio
Module
teeth of spiral
Shape Catalog Number
AH7 B C D E F G H I J K Width × Depth Size L Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
MBSA2-3020R 20 6 x 2.8 2-M5 0.26 MBSA2-3020R
Gears

Gears
m2 30 R B4 40 60 61.36 40 26.8 21.02 14 23 11 37.56 7 34.4 38.4 3.51 3.91
MBSB2-3020R 22 6 x 2.8 2-M5 0.24 MBSB2-3020R
0.06~0.16
MBSA2-2030L 15 5 x 2.3 2-M4 0.14 MBSA2-2030L
m2 20 L BK 35 40 43.49 45 24.96 16.16 13.33 23 11 24.34 6.5 23.5 25.6 2.39 2.61
MBSB2-2030L 18 6 x 2.8 2-M5 0.13 MBSB2-2030L
MBSA2.5-3020R 22 6 x 2.8 2-M5 0.52 MBSA2.5-3020R
m2.5 30 R B4 48 75 76.74 50 33.6 26.31 18 30 14 48.01 9 68.0 76.8 6.93 7.84
MBSB2.5-3020R 25 8 x 3.3 2-M6 0.49 MBSB2.5-3020R
Racks

Racks
0.07~0.17
MBSA2.5-2030L 18 6 x 2.8 2-M5 0.26 MBSA2.5-2030L
m2.5 20 L BK 43 50 54.43 55 30.08 18.98 15.17 28 14 31.02 7.5 46.4 51.2 4.73 5.22
MBSB2.5-2030L 20 6 x 2.8 2-M5 0.25 MBSB2.5-2030L
MBSA3-3020R 25 8 x 3.3 2-M6 0.96 MBSA3-3020R
m3 30 R B4 60 90 92.21 60 40.34 31.66 21 36 17 57.14 11 118 135 12.1 13.8
MBSB3-3020R 30 8 x 3.3 2-M6 0.90 MBSB3-3020R
0.08~0.18
CP Racks &

CP Racks &
MBSA3-2030L 22 6 x 2.8 2-M5 0.46 MBSA3-2030L
1.5 m3 20 L BK 53 60 65.58 65 35.17 21.86 17.67 32.5 17 36.2 9 80.7 90.1 8.23 9.19
Pinions

Pinions
MBSB3-2030L 25 8 x 3.3 2-M6 0.43 MBSB3-2030L
MBSA4-3020R 35 10 x 3.3 2-M8 1.77 MBSA4-3020R
m4 30 R B4 75 120 122.91 70 43.99 32.18 21 39 23 76.72 10 283 328 28.9 33.5
MBSB4-3020R 40 12 x 3.3 2-M8 1.68 MBSB4-3020R
0.12~0.27
MBSA4-2030L 30 8 x 3.3 2-M6 1.03 MBSA4-2030L
m4 20 L BK 70 80 87.34 85 45.53 27.45 21.67 42 23 48.07 11 193 219 19.7 22.3
MBSB4-2030L 35 10 x 3.3 2-M8 0.95 MBSB4-2030L
Gears

Gears
Miter

Miter
MBSA5-3020R m5 30 R B7 80 — 150 — 70 35.53 23.8 — 31 28 97.36 — 6-M10 110 544 637 55.4 64.9 2.80 MBSA5-3020R
MBSA5-2030L 35 10 x 3.3 2-M8 0.14~0.34 2.01 MBSA5-2030L
m5 20 L BK 87 100 109.2 105 55.05 33.07 25.67 51 28 62.04 13 371 425 37.8 43.3
MBSB5-2030L 40 12 x 3.3 2-M8 1.89 MBSB5-2030L
MBSA6-3020R m6 30 R B7 90 — 180 — 80 38.86 24.37 — 33 34 115.61 — 6-M10 120 927 1120 94.6 114 4.55 MBSA6-3020R
MBSA6-2030L 45 14 x 3.8 2-M10 0.16~0.36 3.56 MBSA6-2030L
m6 20 L BK 105 120 130.48 125 65.57 38.49 30 60 34 72.41 15 633 745 64.5 76.0
Gears

Gears
Bevel

Bevel
MBSB6-2030L 50 14 x 3.8 2-M10 3.38 MBSB6-2030L
MBSA2-4020R 20 6 x 2.8 2-M5 0.53 MBSA2-4020R
m2 40 R B4 45 80 81.06 45 31.83 26.06 18 29 14 52.7 9 59.6 69.6 6.08 7.09
MBSB2-4020R 22 6 x 2.8 2-M5 0.51 MBSB2-4020R
0.06~0.16
MBSA2-2040L 15 5 x 2.3 2-M4 0.16 MBSA2-2040L
m2 20 L BK 35 40 44.2 55 28.16 16.05 13.75 27 14 25.39 7 29.9 34.8 3.05 3.55
MBSB2-2040L 18 6 x 2.8 2-M5 0.14 MBSB2-2040L
Screw

Screw
Gears

Gears
MBSA2.5-4020R 25 8 x 3.3 2-M6 0.93 MBSA2.5-4020R
m2.5 40 R B4 55 100 101.29 50 33.35 26.29 16 30 17 66.99 8 114 135 11.7 13.8
MBSB2.5-4020R 28 8 x 3.3 2-M6 0.90 MBSB2.5-4020R
0.07~0.17
MBSA2.5-2040L 20 6 x 2.8 2-M5 0.26 MBSA2.5-2040L
m2.5 20 L BK 43 50 55.12 65 31.01 16.28 13.25 29 17 29.97 7 57.3 67.6 5.84 6.89
MBSB2.5-2040L 22 6 x 2.8 2-M5 0.25 MBSB2.5-2040L
MBSA3-4020R 30 8 x 3.3 2-M6 1.47 MBSA3-4020R
m3 40 R B4 65 120 121.57 60 39.81 31.57 21 35 20 80.28 11 195 233 19.9 23.7
MBSB3-4020R 35 10 x 3.3 2-M8 1.40 MBSB3-4020R
Worm
Gears

Worm
Gears
0.08~0.18
MBSA3-2040L 2 22 6 x 2.8 2-M5 0.51 MBSA3-2040L
m3 20 L BK 53 60 66.03 80 38.9 21.51 18.25 36.5 20 36.56 9.5 97.7 116 9.97 11.9
MBSB3-2040L 25 8 x 3.3 2-M6 0.48 MBSB3-2040L
MBSA4-4020R m4 40 R B7 80 — 160 — 60 32.08 22.53 — 28 27 107.63 — 6-M10 110 466 564 47.5 57.5 3.11 MBSA4-4020R
MBSA4-2040L 30 8 x 3.3 2-M6 0.12~0.27 1.05 MBSA4-2040L
Gearboxes

Gearboxes
m4 20 L BK 70 80 88.46 100 45.38 22.12 17.5 43 27 51.25 9 234 282 23.8 28.8
MBSB4-2040L 35 10 x 3.3 2-M8 0.96 MBSB4-2040L
MBSA5-4020R m5 40 R B7 90 — 200 — 70 35.2 22.98 — 30 34 133.97 — 6-M10 120 915 1120 93.3 114 5.59 MBSA5-4020R
MBSA5-2040L 40 12 x 3.3 2-M8 0.14~0.34 1.96 MBSA5-2040L
m5 20 L BK 87 100 109.91 125 57.11 27.48 21.75 53.5 34 61.95 11 458 559 46.7 57.0
MBSB5-2040L 45 14 x 3.8 2-M10 1.82 MBSB5-2040L
MBSA6-4020R m6 40 R B7 110 — 240 — 80 37.89 23.62 — 32 40 162.56 — 6-M10 140 1530 1920 156 196 8.48 MBSA6-4020R
Products

Products
MBSA6-2040L 50 14 x 3.8 2-M10 0.16~0.36 3.33 MBSA6-2040L
Other

Other
m6 20 L BK 105 120 132.04 150 67.8 33.01 26.25 64 40 77.11 14 766 961 78.1 97.9
MBSB6-2040L 55 16 x 4.3 2-M10 3.11 MBSB6-2040L

Knock pin

When installing products produced in B7

style (ring type), always secure the gears onto
the mounting base with taper pins to absorb Bevel Gear

the rotational loads. It is dangerous to secure

with bolts only.
Mounting base

Product Precautions Page 338

350 Contact us on the website! 351
 MBSA/MBSB Module 2~6 Finished Bore Spiral Bevel Gears
Finished Bore Spiral Bevel Gears
Specifications
E E J
Precision K
grade JIS B 1704: 1978 grade 4 F F
G G
Gear teeth Gleason J H J H K J
G

E
G
Pressure
20°

E
Gears

Gears
F
Spur

Spur
G
angle

F
I

G
16
H
Helix angle 35°

L
I I A G

C
B

B
D

D
K
A

A
Material SCM415 G L G A L
L C
B
Heat
treatment Carburized C
Tooth D
Helical

Helical
55 to 60HRC
Gears

Gears
hardness BK BT B4 B7

Gear No. of Direction Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Keyway Socket head screw Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Ratio
Module
teeth of spiral
Shape Catalog Number
AH7 B C D E F G H I J K Width × Depth Size L Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
MBSA2-4515R 20 6 x 2.8 2-M5 0.61 MBSA2-4515R
Gears

Gears
m2 45 R B4 48 90 90.66 40 30.01 25.99 18 27 14 61.82 9 67.8 61.3 6.91 6.25
MBSB2-4515R 22 6 x 2.8 2-M5 0.60 MBSB2-4515R
0.06~0.16
MBSA2-1545L BT 10 — 2-M4 0.081 MBSA2-1545L
m2 15 L 26 30 34.59 55 23.78 10.77 9.33 22.5 14 16.46 5 21.7 20.4 2.22 2.08
MBSB2-1545L BK 12 4 x 1.8 2-M4 0.073 MBSB2-1545L
MBSA2.5-4515R 22 6 x 2.8 2-M5 1.01 MBSA2.5-4515R
m2.5 45 R B4 55 112.5 113.28 45 32.43 27.42 18 28 17 77.83 9 130 119 13.3 12.1
MBSB2.5-4515R 25 8 x 3.3 2-M6 0.98 MBSB2.5-4515R
Racks

Racks
0.07~0.17
MBSA2.5-1545L 12 4 x 1.8 2-M4 0.16 MBSA2.5-1545L
m2.5 15 L BK 32 37.5 43.06 70 30.51 14.68 12.84 29 17 21.48 7 41.6 39.6 4.24 4.04
MBSB2.5-1545L 15 5 x 2.3 2-M4 0.15 MBSB2.5-1545L
MBSA3-4515R 30 8 x 3.3 2-M6 1.78 MBSA3-4515R
m3 45 R B4 65 135 136.03 55 39.94 34.05 22 35 21 92.39 11 229 211 23.3 21.6
MBSB3-4515R 32 10 x 3.3 2-M8 1.75 MBSB3-4515R
0.08~0.18
CP Racks &

CP Racks &
MBSA3-1545L 3 18 6 x 2.8 2-M5 0.26 MBSA3-1545L
m3 15 L BK 38 45 52 85 38.12 18.67 16.33 36.5 21 26.18 9 73.3 70.5 7.48 7.18
Pinions

Pinions
MBSB3-1545L 20 6 x 2.8 2-M5 0.24 MBSB3-1545L
MBSA4-4515R m4 45 R B7 80 — 180 — 50 28.85 22.14 — 25 28 124.3 — 6-M10 110 542 508 55.3 51.8 3.93 MBSA4-4515R
MBSA4-1545L 22 6 x 2.8 2-M5 0.12~0.27 0.63 MBSA4-1545L
m4 15 L BK 52 60 69.24 110 47.51 21.54 18.67 45.5 28 35.91 10 174 169 17.7 17.3
MBSB4-1545L 25 8 x 3.3 2-M6 0.58 MBSB4-1545L
MBSA5-4515R m5 45 R B7 90 — 225 — 60 33.57 25.16 — 28 35 154.88 — 6-M10 120 1060 1000 108 102 7.38 MBSA5-4515R
Gears

Gears
Miter

Miter
MBSA5-1545L 28 8 x 3.3 2-M6 0.14~0.34 1.16 MBSA5-1545L
m5 15 L BK 65 75 86.55 135 56.89 24.43 20.83 54 35 42.64 11 339 334 34.6 34.1
MBSB5-1545L 32 10 x 3.3 2-M8 1.07 MBSB5-1545L
MBSA6-4515R m6 45 R B7 110 — 270 — 70 38.28 28.05 — 32 42 186.12 — 6-M10 140 1790 1740 183 178 12.0 MBSA6-4515R
MBSA6-1545L 35 10 x 3.3 2-M8 0.16~0.36 1.90 MBSA6-1545L
m6 15 L BK 78 90 103.13 160 66.39 27.19 23 63 42 52.37 12 575 581 58.6 59.3
MBSB6-1545L 40 12 x 3.3 2-M8 1.75 MBSB6-1545L
Gears

Gears
Bevel

Bevel
Screw

Screw
Gears

Gears
Worm
Gears

Worm
Gears
Gearboxes

Gearboxes
Products

Products
Other

Other
Knock pin

When installing products produced in B7

style (ring type), always secure the gears onto
the mounting base with taper pins to absorb Bevel Gear

the rotational loads. It is dangerous to secure

with bolts only.
Mounting base

Product Precautions Page 338

352 Contact us on the website! 353
 SBS Module 1~5 Spiral Bevel Gears
Spiral Bevel Gears
Specifications
E K
Precision
grade JIS B 1704: 1978 grade 4 F
J
G J B
Gear teeth Gleason J H K FD

Pressure
20°
Gears

Gears
E
E
Spur

Spur
angle

F
I

I
FD

G
I

G
Helix angle 35°

H
C
B

D
K

A
Material S45C A A
Heat B B
treatment Gear teeth induction hardened
C C
Tooth
Helical

Helical
50 to 60HRC D D
Gears

Gears
hardness B3 B4 B5
Surface
treatment Black oxide coating * FD has a forged finish surface.

Direction of Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth
spiral
Shape Catalog Number
A B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
SBS2-3020R 30 R B4 12 35 60 61.36 40 26.8 21.02 15 23 37.56 15.4 11.3 1.57 1.15 0.26 SBS2-3020R
Gears

Gears
m2 11 0.06~0.16
SBS2-2030L 20 L B3 10 30 40 43.49 45 24.96 16.16 11.67 22 21.34 10.5 7.52 1.07 0.77 0.13 SBS2-2030L
SBS2.5-3020R 30 R B4 15 45 75 77.09 50 33.86 26.56 18 30 45.61 31.7 23.6 3.23 2.40 0.55 SBS2.5-3020R
m2.5 15 0.07~0.17
SBS2.5-2030L 20 L B3 12 40 50 54.43 55 30.88 18.98 14.17 28 27.42 21.6 15.7 2.20 1.60 0.28 SBS2.5-2030L
SBS3-3020R 30 R B4 16 50 90 92.21 55 35.34 26.66 17 31 57.14 52.9 39.7 5.39 4.05 0.82 SBS3-3020R
1.5 m3 17 0.08~0.18
SBS3-2030L 20 L B3 16 45 60 65.58 70 40.17 26.86 20 37 34.71 36.1 26.5 3.68 2.70 0.49 SBS3-2030L
Racks

Racks
SBS4-3020R 30 R B4 20 70 120 122.85 75 47.49 37.14 25 40 78.59 115 88.1 11.8 8.99 1.90 SBS4-3020R
m4 20 0.12~0.27
SBS4-2030L 20 L B3 20 60 80 87.34 90 48.17 32.45 23.33 43 46.89 78.7 58.8 8.03 5.99 1.05 SBS4-2030L
SBS5-3020R 30 R B4 25 90 150 153.67 90 58.08 42.75 24 50 91.22 253 195 25.8 19.9 4.11 SBS5-3020R
m5 30 0.14~0.34
SBS5-2030L 20 L B3 22 80 100 109.2 110 61.62 38.07 28.33 56 54.83 173 130 17.6 13.3 2.29 SBS5-2030L
CP Racks &

CP Racks &
SBS1-4020R 40 R B4 8 25 40 40.52 22 15.02 12.52 8 12 26.58 3.01 2.22 0.31 0.23 0.068 SBS1-4020R
Pinions

Pinions
m1 6 0.03~0.13
SBS1-2040L 20 L B3 6 16 20 22.08 28 13.73 8.52 7 12 9.17 1.51 1.11 0.15 0.11 0.019 SBS1-2040L
SBS1.5-4020R 40 R B4 10 38 60 60.75 35 24.93 20.75 15 22 39.64 10.9 8.22 1.11 0.84 0.27 SBS1.5-4020R
m1.5 10 0.05~0.15
SBS1.5-2040L 20 L B3 8 25 30 33.08 46 25.45 16.77 14.75 24 17.28 5.46 4.11 0.56 0.42 0.088 SBS1.5-2040L
SBS2-4020R 40 R B4 12 40 80 81 45 32.27 26 18 27 48.46 27.8 21.3 2.83 2.17 0.51 SBS2-4020R
m2 15 0.06~0.16
Gears

Gears
SBS2-2040L 20 L B3 12 32 40 44.1 60 34.04 21.02 18 32 20.92 13.9 10.7 1.42 1.09 0.19 SBS2-2040L
Miter

Miter
SBS2.5-4020R 40 R B4 15 50 100 101.27 55 39.65 31.27 20 34 59.28 56.4 43.7 5.75 4.46 1.06 SBS2.5-4020R
2 m2.5 20 0.07~0.17
SBS2.5-2040L 20 L B3 12 40 50 55.2 75 43.61 26.3 22.5 40 20.56 28.2 21.9 2.88 2.23 0.40 SBS2.5-2040L
SBS3-4020R 40 R B4 20 60 120 121.48 65 45.76 36.47 24 38 73.81 92.5 72.6 9.44 7.40 1.67 SBS3-4020R
m3 22 0.08~0.18
SBS3-2040L 20 L B3 16 50 60 66.07 90 50.63 31.52 27.5 47 29.61 46.4 36.3 4.73 3.70 0.69 SBS3-2040L
Gears

Gears
Bevel

Bevel
SBS4-4020R 40 R B4 20 70 160 162.07 80 53.69 42.07 28 45 102.39 213 170 21.7 17.3 3.33 SBS4-4020R
m4 28 0.12~0.27
SBS4-2040L 20 L B3 20 60 80 88.5 120 66.24 42.12 35 62 42.78 107 84.8 10.9 8.65 1.46 SBS4-2040L
SBS5-4020R 40 R B5 25 100 200 202.54 90 55.02 42.54 26 50 138.92 376 302 38.3 30.8 5.67 SBS5-4020R
m5 30 0.14~0.34
SBS5-2040L 20 L B3 22 80 100 110.45 140 68.48 42.61 35 63 57.84 188 151 19.2 15.4 2.61 SBS5-2040L
SBS2.5-3618R 36 R B4 15 55 90 91.29 43 28.38 21.79 13 24 57.72 41.7 29.3 4.26 2.99 0.72 SBS2.5-3618R
m2.5 16 0.07~0.17
Screw

Screw
Gears

Gears
SBS2.5-1836L 18 L B3 12 38 45 50.3 64 34.06 20.32 17.25 32 25.45 20.9 14.7 2.13 1.49 0.27 SBS2.5-1836L
SBS3-3618R 36 R B4 20 60 108 109.53 52 34.82 26.53 17 30 68.27 74.0 52.4 7.54 5.35 1.15 SBS3-3618R
2 m3 20 0.08~0.18
SBS3-1836L 18 L B3 16 46 54 60.28 75 39.78 22.57 19 37 28.56 37.0 26.2 3.78 2.67 0.44 SBS3-1836L
SBS4-3618R 36 R B4 20 70 144 145.99 72 48.84 37.99 25 42 91.87 173 124 17.6 12.7 2.65 SBS4-3618R
m4 26 0.12~0.27
SBS4-1836L 18 L B3 20 60 72 80.19 100 52.51 30.05 25 49 39.72 86.4 62.1 8.81 6.33 1.03 SBS4-1836L
Worm
Gears

Worm
Gears
SBS2-4518R 45 R B4 12 48 90 90.79 40 27.67 22.98 15 25 62.24 31.0 21.9 3.16 2.23 0.65 SBS2-4518R
m2 14 0.06~0.16
SBS2-1845L 18 L B3 10 32 36 40.42 60 28.54 15.88 14.2 27.5 23.11 12.2 8.74 1.24 0.89 0.15 SBS2-1845L
SBS2.5-4518R 45 R B4 15 55 112.5 113.49 50 34.94 28.74 18 31 76.53 61.6 44.0 6.28 4.49 1.23 SBS2.5-4518R
m2.5 18 0.07~0.17
SBS2.5-1845L 18 L B3 12 40 45 50.35 72 33.19 16.82 14.75 31.5 26.82 24.2 17.6 2.47 1.80 0.28 SBS2.5-1845L
Gearboxes

Gearboxes
SBS3-4518R 45 R B4 20 65 135 136.24 60 41.65 34.55 22 37 92.96 104 75.4 10.7 7.69 2.05 SBS3-4518R
2.5 m3 21 0.08~0.18
SBS3-1845L 18 L B3 16 48 54 60.69 85 37.82 18.84 16.3 36 33.41 41.0 30.2 4.18 3.07 0.45 SBS3-1845L
SBS4-4518R 45 R B4 25 80 180 181.57 75 50.98 40.96 24 45 122.33 253 185 25.8 18.9 4.62 SBS4-4518R
m4 29 0.12~0.27
SBS4-1845L 18 L B3 20 62 72 80.86 110 48.03 21.77 18 46 45.83 99.5 74.1 10.2 7.56 1.00 SBS4-1845L
SBS5-4518R 45 R B4 30 100 225 225.81 90 57.9 46.01 28 51 156.56 474 350 48.4 35.7 8.11 SBS5-4518R
m5 34 0.14~0.34
Products

Products
SBS5-1845L 18 L B3 22 80 90 103.87 135 56.02 25.27 20.5 52.5 56.9 186 140 19.0 14.3 1.94 SBS5-1845L
Other

Other
Product Precautions Page 338
354 Contact us on the website! 355
 SBS Module 1.5~5 Spiral Bevel Gears
Spiral Bevel Gears
Specifications
E K
Precision
grade JIS B 1704: 1978 grade 4 F
J
G J B
Gear teeth Gleason J H K FD
Pressure
20°
Gears

Gears
E
E
angle
Spur

Spur
F
I

F
35°*

I
Helix angle FD

G
I

G
H

H
Material S45C

C
B

D
K

A
Heat A A
treatment Gear teeth induction hardened
B B
Tooth C C
hardness 50 to 60HRC
Helical

Helical
D D
Gears

Gears
Surface B3 B4 B5
treatment Black oxide coating
* 6015R and 1560L of SBS1.5 and 2 are 39°. * FD has a forged finish surface.

Direction of Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth
spiral
Shape Catalog Number
A B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
SBS2-4515R 45 R B4 12 40 90 90.67 40 30.29 26.01 17 26 59.04 31.7 18.8 3.23 1.92 0.60 SBS2-4515R
Gears

Gears
m2 15 0.06~0.16
SBS2-1545L 15 L B3 10 24 30 34.78 60 29.66 15.8 14 29 19.13 10.1 6.27 1.03 0.64 0.095 SBS2-1545L
SBS2.5-4515R 45 R B4 15 50 112.5 113.32 50 38.25 32.47 22 35 72.82 64.3 38.7 6.56 3.94 1.21 SBS2.5-4515R
m2.5 20 0.07~0.17
SBS2.5-1545L 15 L B3 12 30 37.5 43.36 75 38.27 19.73 17.5 37 20.51 20.6 12.9 2.10 1.31 0.19 SBS2.5-1545L
SBS3-4515R 45 R B4 20 60 135 135.99 55 40.59 33.98 20 35 88.18 108 65.8 11.1 6.71 1.99 SBS3-4515R
3 m3 23 0.08~0.18
SBS3-1545L 15 L B3 15 38 45 52.08 90 44.98 23.68 21.33 44 28.54 34.7 21.9 3.54 2.24 0.34 SBS3-1545L
Racks

Racks
SBS4-4515R 45 R B5 20 80 180 181.3 70 50.62 41.95 24 45 118.08 253 156 25.8 15.9 4.04 SBS4-4515R
m4 30 0.12~0.27
SBS4-1545L 15 L B3 16 50 60 69.3 115 54.37 26.55 23.33 52 32.26 81.1 52.0 8.27 5.30 0.76 SBS4-1545L
SBS5-4515R 45 R B5 30 90 225 226.61 75 50.05 39.92 20 44 152.88 473 295 48.3 30.0 6.08 SBS5-4515R
m5 35 0.14~0.34
SBS5-1545L 15 L B3 20 60 75 86.55 145 66.89 34.43 30 65 48.64 152 98.2 15.5 10.0 1.44 SBS5-1545L
CP Racks &

CP Racks &
SBS1.5-6015R 60 R B4 12 60 90 90.36 32 24.08 21.48 12 21 65.39 17.9 12.9 1.83 1.31 0.70 SBS1.5-6015R
Pinions

Pinions
m1.5 12 0.05~0.15
SBS1.5-1560L 15 L B3 8 18 22.5 26.09 56 22.95 11.45 10.43 22.5 15.55 4.22 3.21 0.43 0.33 0.042 SBS1.5-1560L
SBS2-6015R 60 R B4 15 80 120 120.46 42 31.5 27.91 16 27 87.02 42.5 30.9 4.33 3.15 1.59 SBS2-6015R
m2 16 0.06~0.16
SBS2-1560L 15 L B3 10 24 30 34.68 75 30.94 15.58 14.25 30 18.06 10.0 7.73 1.02 0.79 0.10 SBS2-1560L
4
SBS2.5-6015R 60 R B4 20 100 150 150.5 53 39.68 35.24 20 34 108.64 96.1 58.4 9.79 5.95 3.13 SBS2.5-6015R
m2.5 20 0.07~0.17
Gears

Gears
SBS2.5-1560L 15 L B3 12 30 37.5 44.16 94 38.9 19.83 18.06 37.5 20.58 22.6 14.6 2.31 1.49 0.20 SBS2.5-1560L
Miter

Miter
SBS3-6015R 60 R B4 20 120 180 180.57 64 47.61 42.64 25 41 134.4 156 95.7 15.9 9.76 5.38 SBS3-6015R
m3 22 0.08~0.18
SBS3-1560L 15 L B3 15 38 45 52.64 112 44.01 22.96 21.12 43 31.58 36.8 23.9 3.75 2.44 0.35 SBS3-1560L
Gears

Gears
Bevel

Bevel
Product Precautions Page 338
Screw

Screw
Gears

Gears
■ Mating surface of spiral bevel gears For right-hand drive gear ■ The force applied to the teeth of the spiral bevel gear
Meshing tooth surface
Worm
Gears

Worm
Gears
Spiral bevel gears have convex and concave tooth surfaces. If Direction of rotation The table below shows, for spiral bevel gears with an axis angle of
of drive gear NOTE 1 Right-hand drive gear Left-hand driven gear Σ = 90°, pressure angle of αn = 20° and spiral angle of βm = 35°,
the direction of rotation of the drive gear differs, the meshing
tooth surface will also change. The table on the right shows Convex tooth Concave tooth the magnitudes of the axial force Fx and radial force Fr where the
how to view the convex and concave tooth surfaces and the Clockwise tangential force Ft at the center of the tooth width is 100.
Gearboxes

Gearboxes
surface surface
meshing tooth surface with respect to the direction of rotation
Concave tooth Convex tooth
of the drive gear. Counterclockwise Thrust force Fx
surface surface value
Radial force Fr
Products

Products
Concave tooth surface
Other

Other
For left-hand drive gear
Meshing tooth surface (1) Force applied to pinion (2) Force applied to gear
Direction of rotation
of drive gear NOTE 1 Left-hand drive gear Right-hand driven gear Meshing Gear Ratio z2/z1 Meshing Gear Ratio z2/z1
tooth tooth
Concave tooth Convex tooth surface 1.0 1.5 2.0 2.5 3.0 4.0 5.0 surface 1.0 1.5 2.0 2.5 3.0 4.0 5.0
Tooth
Convex tooth surface
Tooth Clockwise
Right-hand spiral Left-hand spiral surface surface Concave 80.9 82.9 82.5 81.5 80.5 78.7 77.4 Concave 80.9 75.8 71.1 67.3 64.3 60.1 57.3

Convex tooth Concave tooth tooth surface —18.1 —1.9 8.4 15.2 20.0 26.1 29.8 tooth surface —18.1 —33.6 —42.8 —48.5 —52.4 —57.2 —59.9
Counterclockwise
surface surface Convex —18.1 —33.6 —42.8 —48.5 —52.4 —57.2 —59.9 Convex —18.1 —1.9 8.4 15.2 20.0 26.1 29.8

[NOTE 1] The direction of rotation in the table is as seen from the tooth surface 80.9 75.8 71.1 67.3 64.3 60.1 57.3 tooth surface 80.9 82.9 82.5 81.5 80.5 78.7 77.4

hub of the gear.

356 Contact us on the website! 357

 SB/SBY Module 1~8 Bevel Gears
Bevel Gears
Specifications
E K
Precision
grade JIS B 1704: 1978 grade 3 F
J
G J B K
Gear teeth Gleason J H K FD L J

Pressure
20°
Gears

Gears
E
E
Spur

Spur
angle

F
I

E
F

I
FD

G
I

G
Material S45C

F
G
H

H
Heat

C
B

D
K

A
treatment — A A
A
Tooth B B B
hardness (less than 194HB)
C C C
Surface
Helical

Helical
Black oxide coating D D D
Gears

Gears
treatment B3 B4 B5 BT
* FD has a forged finish surface.
Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth Shape Catalog Number
AH7 B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
SB1.5-3020 30 B4 10 30 45 46.24 28 18.53 13.93 8 16 27.37 5.82 0.65 0.59 0.07 0.12 SB1.5-3020
Gears

Gears
m1.5 9 0.05~0.15
SB1.5-2030 20 B3 8 25 30 33.13 33 18.63 11.54 8.83 17 17.05 4.04 0.44 0.41 0.04 0.063 SB1.5-2030
SB2-3020 30 B4 10 35 60 61.65 40 26.87 21.24 15 23 37.56 13.1 1.52 1.33 0.16 0.26 SB2-3020
m2 11 0.06~0.16
SB2-2030 20 B3 10 30 40 44.18 45 25.06 16.39 11.67 22 21.34 9.07 1.01 0.92 0.10 0.14 SB2-2030
SB2.5-3020 30 B4 15 45 75 77.07 50 34.22 26.55 18 30 45.61 26.9 3.21 2.75 0.33 0.55 SB2.5-3020
m2.5 15 0.07~0.17
SB2.5-2030 20 B3 12 35 50 55.22 55 31.06 19.24 12.5 28 27.42 18.7 2.14 1.91 0.22 0.25 SB2.5-2030
Racks

Racks
1.5
SB3-3020 30 B4 15 50 90 92.48 55 35.56 26.86 17 31 57.14 44.9 5.45 4.58 0.56 0.83 SB3-3020
m3 17 0.08~0.18
SB3-2030 20 B3 15 45 60 66.27 70 40.48 27.09 20 37 34.71 31.2 3.63 3.18 0.37 0.50 SB3-2030
SB4-3020 30 B4 20 70 120 123.3 75 47.71 37.48 25 40 78.59 98.2 12.3 10.0 1.25 1.91 SB4-3020
m4 20 0.12~0.27
SB4-2030 20 B3 15 60 80 88.32 90 48.53 32.77 23.33 43 46.89 68.1 8.20 6.95 0.84 1.10 SB4-2030
CP Racks &

CP Racks &
SB5-3020 30 B4 25 90 150 154.13 90 58.45 43.1 24 50 91.22 215 27.6 22.0 2.81 4.13 SB5-3020
m5 30 0.14~0.34
Pinions

Pinions
SB5-2030 20 B3 20 80 100 110.45 110 62.11 38.48 28.33 56 54.83 150 18.4 15.3 1.87 2.34 SB5-2030
SB1.5-3015 30 B4 8 25 45 45.88 25 17.85 14.63 9 15 28.36 5.02 0.47 0.51 0.05 0.10 SB1.5-3015
m1.5 8 0.05~0.15
SB1.5-1530 15 B3 6 16 22.5 26.11 32 17.23 10.4 7.88 15.5 10.72 2.60 0.24 0.26 0.02 0.028 SB1.5-1530
SB2-3015 30 B4 10 30 60 61.17 31 21.6 17.17 10 18 37.4 12.1 1.18 1.24 0.12 0.21 SB2-3015
m2 11 0.06~0.16
SB2-1530 15 B3 8 22 30 34.81 40 20.59 11.2 8 19 16.81 6.28 0.59 0.64 0.06 0.064 SB2-1530
Gears

Gears
Miter

Miter
SB2.5-3015 30 B4 15 40 75 76.46 40 28.75 22.71 15 24 44.21 24.9 2.48 2.54 0.25 0.41 SB2.5-3015
m2.5 15 0.07~0.17
SB2.5-1530 15 B3 12 30 37.5 43.51 55 31.81 19 15.63 29 16.42 12.9 1.24 1.32 0.13 0.15 SB2.5-1530
SB3-3015 30 B4 16 50 90 91.76 50 37.31 29.26 18 30 47.78 45.6 4.60 4.65 0.47 0.83 SB3-3015
2 m3 20 0.08~0.18
SB3-1530 15 B3 12 35 45 52.22 70 43.88 26.8 22.5 41 19.56 23.6 2.30 2.41 0.23 0.31 SB3-1530
SB4-3015 30 B4 20 60 120 122.34 60 42.4 32.34 20 36 70.1 104 10.9 10.7 1.11 1.64 SB4-3015
m4 25 0.12~0.27
Gears

Gears
Bevel

Bevel
SB4-1530 15 B3 16 50 60 69.62 85 48.74 27.41 22.5 46 32.2 54.0 5.43 5.51 0.55 0.66 SB4-1530
SB5-3015 30 B5 20 70 150 152.93 75 52.5 40.43 25 48 90.41 199 21.3 20.3 2.17 2.72 SB5-3015
m5 30 0.14~0.34
SB5-1530 15 B3 20 60 75 87.03 110 63.61 38.01 31.25 58 32.83 103 10.6 10.5 1.09 1.28 SB5-1530
SB6-3015 30 B5 25 80 180 183.5 90 62.56 48.49 28 57 109.74 336 36.9 34.2 3.77 4.75 SB6-3015
m6 35 0.16~0.36
SB6-1530 15 B3 25 70 90 104.44 125 68.48 38.6 30 63 45.47 174 18.5 17.7 1.88 1.94 SB6-1530
Screw

Screw
Gears

Gears
SB2.5-3618 36 B4 15 55 90 91.46 43 28.52 21.96 13 24 57.72 35.9 4.08 3.66 0.42 0.72 SB2.5-3618
m2.5 16 0.07~0.17
SB2.5-1836 18 B3 12 38 45 51.01 64 34.27 20.5 17.25 32 25.44 18.1 2.04 1.84 0.21 0.27 SB2.5-1836
SB3-3618 36 B4 20 60 108 109.76 52 34.95 26.76 17 30 68.28 63.7 7.34 6.49 0.75 1.15 SB3-3618
2 m3 20 0.08~0.18
SB3-1836 18 B3 16 46 54 61.22 75 40.01 22.8 19 37 28.56 32.0 3.67 3.27 0.37 0.44 SB3-1836
SB4-3618 36 B4 20 70 144 146.34 72 49 38.34 25 42 91.86 149 17.7 15.2 1.80 2.66 SB4-3618
m4 26 0.12~0.27
SB4-1836 18 B3 20 60 72 81.62 100 52.77 30.41 25 49 39.72 74.8 8.85 7.62 0.90 1.04 SB4-1836
Worm
Gears

Worm
Gears
SB1-4020 40 B4 8 25 40 40.59 22 15.07 12.59 8 12 26.58 2.61 0.29 0.27 0.03 0.068 SB1-4020
m1 6 0.03~0.13
SB1-2040 20 B3 6 16 20 22.41 28 13.78 8.6 7 12 9.17 1.32 0.15 0.13 0.02 0.019 SB1-2040
SB1.25-4020 40 B4 10 32 50 50.73 27 18.54 15.23 10 16 33.61 5.33 0.61 0.54 0.06 0.14 SB1.25-4020
m1.25 8 0.04~0.14
SB1.25-2040 20 B3 8 22 25 28.01 36 18.66 11.75 10.25 17 13.22 2.69 0.31 0.27 0.03 0.046 SB1.25-2040
Gearboxes

Gearboxes
SB1.5-4020 40 B4 10 38 60 60.88 35 25.01 20.88 15 22 39.64 9.47 1.11 0.97 0.11 0.27 SB1.5-4020
m1.5 10 0.05~0.15
SB1.5-2040 20 B3 8 25 30 33.61 46 25.54 16.9 14.75 24 17.28 4.77 0.56 0.49 0.06 0.089 SB1.5-2040
SB2-4020 40 B4 12 40 80 81.17 45 32.37 26.17 18 27 48.46 24.2 2.92 2.46 0.30 0.51 SB2-4020
m2 15 0.06~0.16
SB2-2040 20 B3 12 32 40 44.81 60 34.16 21.2 18 32 20.92 12.2 1.46 1.24 0.15 0.19 SB2-2040
SB2.5-4020 40 B4 15 50 100 101.46 55 39.73 31.46 20 35 60.28 49.0 6.04 4.99 0.62 1.09 SB2.5-4020
m2.5 20 0.07~0.17
Products

Products
SB2.5-2040 20 B3 12 40 50 56.01 75 43.78 26.5 22.5 41 24.56 24.7 3.02 2.52 0.31 0.40 SB2.5-2040
Other

Other
2
SB3-4020 40 B4 20 60 120 121.76 65 45.85 36.76 24 38 73.81 80.4 10.1 8.20 1.03 1.68 SB3-4020
m3 22 0.08~0.18
SB3-2040 20 B3 16 50 60 67.22 90 50.81 31.8 27.5 47 29.61 40.5 5.06 4.13 0.52 0.70 SB3-2040
SB4-4020 40 B4 20 70 160 162.34 80 53.92 42.34 28 45 102.39 185 24.1 18.9 2.46 3.34 SB4-4020
m4 28 0.12~0.27
SB4-2040 20 B3 20 60 80 89.62 120 66.59 42.41 35 62 42.78 93.3 12.0 9.51 1.23 1.47 SB4-2040
SB5-4020 40 B5 25 100 200 202.93 90 55.33 42.93 26 50 138.92 327 43.9 33.3 4.47 5.63 SB5-4020
m5 30 0.14~0.34
SB5-2040 20 B3 20 80 100 112.03 140 68.92 43.01 35 63 57.84 165 21.9 16.8 2.24 2.67 SB5-2040
SB6-4020 40 B5 25 85 240 243.52 105 65.05 48.52 28 58 158.56 600 83.2 61.2 8.48 7.77 SB6-4020
m6 40 0.16~0.36
SB6-2040 20 B3 25 90 120 134.44 160 78.16 43.6 32.5 70 61.11 302 41.6 30.8 4.24 4.08 SB6-2040
SBY8-4020 40 BT 35 180 320 324.69 130 75.36 54.69 25 61 219.2 1350 196 138 20.0 25.75 SBY8-4020
m8 50 0.20~0.45
SBY8-2040 20 B3 30 120 160 179.25 210 98 54.81 40 90 96.39 679 98.1 69.3 10.0 9.41 SBY8-2040

Product Precautions Page 338

358 Contact us on the website! 359
 SB/SBY Module 1~8 Bevel Gears
Bevel Gears
Specifications
E K
Precision
grade JIS B 1704: 1978 grade 3 F
J
G J B K
Gear teeth Gleason J H K FD L J

Pressure
20°
Gears

Gears
E
E
Spur

Spur
angle

F
I

E
F

I
FD

G
I

G
Material S45C

F
G
H

H
Heat

C
B

D
K

A
treatment — A A
A
Tooth B B B
hardness (less than 194HB)
C C C
Surface
Helical

Helical
Black oxide coating D D D
Gears

Gears
treatment B3 B4 B5 BT
* FD has a forged finish surface.
Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth Shape Catalog Number
AH7 B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
SB1-4518 45 B4 8 30 45 45.46 23 16.95 14.57 10 15 30.73 3.35 0.35 0.34 0.04 0.11 SB1-4518
Gears

Gears
m1 7 0.03~0.13
SB1-1845 18 B3 6 15 18 20.57 32 16.34 10.02 8.9 15.5 10.31 1.33 0.14 0.14 0.01 0.019 SB1-1845
SB1.25-4518 45 B4 10 34 56.25 56.82 26 18.53 15.46 10 16 37.86 6.67 0.72 0.68 0.07 0.17 SB1.25-4518
m1.25 9 0.04~0.14
SB1.25-1845 18 B3 8 19 22.5 25.72 40 20.66 12.52 11.17 19.5 12.16 2.65 0.29 0.27 0.03 0.038 SB1.25-1845
SB1.5-4518 45 B4 10 36 67.5 68.18 30 21.1 17.35 10 18 45 11.7 1.29 1.19 0.13 0.28 SB1.5-4518
m1.5 11 0.05~0.15
SB1.5-1845 18 B3 8 23 27 30.86 45 21.97 12.02 10.45 21 16.51 4.64 0.51 0.47 0.05 0.063 SB1.5-1845
Racks

Racks
SB2-4518 45 B4 12 48 90 90.91 40 27.91 23.14 15 25 62.24 26.8 3.05 2.74 0.31 0.65 SB2-4518
m2 14 0.06~0.16
SB2-1845 18 B3 10 32 36 41.15 60 28.69 16.03 14.2 27.5 23.11 10.7 1.22 1.09 0.12 0.16 SB2-1845
2.5
SB2.5-4518 45 B4 15 55 112.5 113.64 50 35.06 28.92 18 31 76.53 53.4 6.20 5.44 0.63 1.23 SB2.5-4518
m2.5 18 0.07~0.17
SB2.5-1845 18 B3 12 40 45 51.44 72 33.31 17.04 14.75 31.5 26.82 21.2 2.48 2.16 0.25 0.28 SB2.5-1845
CP Racks &

CP Racks &
SB3-4518 45 B4 20 65 135 136.37 60 41.86 34.71 22 37 92.96 90.5 10.7 9.23 1.09 2.05 SB3-4518
m3 21 0.08~0.18
Pinions

Pinions
SB3-1845 18 B3 16 48 54 61.72 85 38.04 19.05 16.3 36 33.41 36.0 4.29 3.67 0.44 0.46 SB3-1845
SB4-4518 45 B4 20 80 180 181.82 75 51.16 41.28 24 45 122.33 220 26.8 22.4 2.73 4.69 SB4-4518
m4 29 0.12~0.27
SB4-1845 18 B3 20 62 72 82.3 110 48.28 22.06 18 46 45.83 87.3 10.7 8.91 1.09 1.01 SB4-1845
SB5-4518 45 B4 25 100 225 227.28 90 59.43 47.85 28 51 156.56 411 51.8 41.9 5.28 8.31 SB5-4518
m5 34 0.14~0.34
SB5-1845 18 B3 20 80 90 102.87 135 55.82 25.07 20.5 52.5 56.9 164 20.7 16.7 2.11 1.95 SB5-1845
Gears

Gears
Miter

Miter
SB1-4515 45 B4 8 30 45 45.37 17 11.77 10.06 5 9 32.02 2.84 0.27 0.29 0.027 0.078 SB1-4515
m1 6 0.03~0.13
SB1-1545 15 B3 6 12 15 17.67 29 12.51 6.95 6 12 10.05 0.98 0.09 0.10 0.0091 0.095 SB1-1545
SB1.25-4515 45 B4 10 34 56.25 56.72 21 14.61 12.33 6 12 39.63 5.80 0.56 0.59 0.057 0.15 SB1.25-4515
m1.25 8 0.04~0.14
SB1.25-1545 15 B3 8 15 18.75 22.09 36 15.85 8.43 7.25 15 10.9 2.00 0.19 0.20 0.019 0.018 SB1.25-1545
SB1.5-4515 45 B4 10 36 67.5 68.06 28 20.44 17.59 11 17 46.58 10.3 1.02 1.05 0.10 0.25 SB1.5-4515
m1.5 10 0.05~0.15
Gears

Gears
Bevel

Bevel
SB1.5-1545 15 B3 8 18 22.5 26.54 47 23.19 13.92 12.5 22.5 14.75 3.56 0.34 0.36 0.035 0.041 SB1.5-1545
SB2-4515 45 B4 12 40 90 90.75 40 30.4 26.12 17 26 59.04 26.4 2.68 2.69 0.27 0.60 SB2-4515
m2 15 0.06~0.16
SB2-1545 15 B3 10 24 30 35.35 60 29.8 15.89 14 29 19.13 9.10 0.89 0.93 0.091 0.096 SB2-1545
SB2.5-4515 45 B4 15 50 112.5 113.43 50 38.35 32.65 22 35 72.84 53.6 5.55 5.46 0.57 1.22 SB2.5-4515
m2.5 20 0.07~0.17
SB2.5-1545 15 B3 12 30 37.5 44.18 75 38.41 19.86 17.5 37 20.51 18.5 1.85 1.89 0.19 0.19 SB2.5-1545
3
Screw

Screw
Gears

Gears
SB3-4515 45 B4 20 60 135 136.12 55 40.74 34.18 20 35 88.18 90.2 9.53 9.20 0.97 1.99 SB3-4515
m3 23 0.08~0.18
SB3-1545 15 B3 15 38 45 53.02 90 45.17 23.84 21.33 43 22.53 31.2 3.18 3.18 0.32 0.34 SB3-1545
SB4-4515 45 B5 20 80 180 181.5 70 50.79 42.24 24 45 118.09 211 23.0 21.5 2.35 3.89 SB4-4515
m4 30 0.12~0.27
SB4-1545 15 B3 16 50 60 70.69 115 54.6 26.78 23.33 52 32.26 72.8 7.67 7.43 0.78 0.77 SB4-1545
SB5-4515 45 B5 25 90 225 226.87 75 50.28 40.3 20 44 152.88 394 44.3 40.2 4.52 6.10 SB5-4515
m5 35 0.14~0.34
SB5-1545 15 B3 20 60 75 88.37 145 67.19 34.73 30 65 48.64 136 14.8 13.9 1.51 1.46 SB5-1545
Worm
Gears

Worm
Gears
SB6-4515 45 BT 30 160 270 272.24 100 72.62 58.36 30 62 169.26 751 87.0 76.6 8.87 18.0 SB6-4515
m6 50 0.16~0.36
SB6-1545 15 B3 25 70 90 106.03 175 89.04 42.67 36.67 86 49.77 259 39.9 26.4 4.06 2.61 SB6-1545
SBY8-4515 45 BT 35 200 360 362.99 125 83.74 69.49 30 67 255.92 1470 179 150 18.3 36.4 SBY8-4515
m8 50 0.20~0.45
SBY8-1545 15 B3 30 100 120 141.39 230 99.93 53.56 46.67 93 61.77 506 59.7 51.6 6.09 5.80 SBY8-1545
Gearboxes

Gearboxes
Products

Products
Other

Other
Product Precautions Page 338
360 Contact us on the website! 361
 SB/SBY Module 1.5~6 Bevel Gears
Bevel Gears
Specifications
E K
Precision
grade JIS B 1704: 1978 grade 3 F
J
G J B K
Gear teeth Gleason J H K FD L J

Pressure
20°
Gears

Gears
E
E
Spur

Spur
angle

F
I

E
F

I
FD

G
I

G
Material S45C

F
G
H

H
Heat

C
B

D
K

A
treatment — A A
A
Tooth B B B
hardness (less than 194HB)
C C C
Surface
Helical

Helical
Black oxide coating D D D
Gears

Gears
treatment B3 B4 B5 BT
* FD has a forged finish surface.
Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth Shape Catalog Number
AH7 B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
SB1.5-6015 60 B4 12 50 90 90.41 32 24.2 21.58 12 21 65.38 17.3 1.75 1.77 0.18 0.62 SB1.5-6015
Gears

Gears
m1.5 12 0.05~0.15
SB1.5-1560 15 B3 8 18 22.5 26.66 56 23.01 11.52 10.43 22.5 15.54 4.46 0.44 0.45 0.045 0.043 SB1.5-1560
SB2-6015 60 B4 15 60 120 120.55 42 31.6 28.1 16 27 87.02 41.3 4.30 4.21 0.44 1.35 SB2-6015
m2 16 0.06~0.16
SB2-1560 15 B3 10 24 30 35.55 75 31.01 15.69 14.25 30 18.06 10.6 1.07 1.08 0.11 0.10 SB2-1560
SB2.5-6015 60 B4 20 70 150 150.69 53 40 35.63 20 34 108.64 80.2 8.54 8.18 0.87 2.51 SB2.5-6015
m2.5 20 0.07~0.17
SB2.5-1560 15 B3 12 30 37.5 44.44 94 39.02 19.87 18.06 37.5 20.57 20.6 2.13 2.10 0.22 0.21 SB2.5-1560
Racks

Racks
SB3-6015 60 B4 20 80 180 180.83 64 47.97 43.15 25 41 134.4 130 14.2 13.3 1.44 4.16 SB3-6015
4 m3 22 0.08~0.18
SB3-1560 15 B3 15 38 45 53.33 112 44.1 23.04 21.12 43 31.58 33.5 3.54 3.42 0.36 0.36 SB3-1560
SB4-6015 60 B5 25 85 240 241.1 80 59.2 52.2 36 53 174.03 328 37.0 33.5 3.77 6.00 SB4-6015
m4 32 0.12~0.27
SB4-1560 15 B3 16 50 60 71.1 150 62.03 31.4 28.75 60 36.12 84.5 9.24 8.62 0.94 0.91 SB4-1560
CP Racks &

CP Racks &
SBY5-6015 60 BT 30 180 300 301.36 80 53.97 45.22 20 45 218.79 642 74.4 65.4 7.59 17.5 SBY5-6015
m5 40 0.14~0.34
Pinions

Pinions
SBY5-1560 15 B3 25 60 75 88.9 185 75.03 36.74 33.13 73 49.15 165 18.6 16.8 1.90 1.58 SBY5-1560
SBY6-6015 60 BT 35 200 360 361.66 100 68.16 58.31 25 56 267.73 1050 126 107 12.8 30.7 SBY6-6015
m6 45 0.16~0.36
SBY6-1560 15 B3 25 75 90 106.66 220 85.17 42.08 38.13 82 54.92 270 31.5 27.5 3.21 2.83 SBY6-1560
Gears

Gears
Miter

Miter
Gears

Gears
Bevel

Bevel
SB Module 1.5~3 Bevel Gears &Pinion Shafts
Steel Bevel Gears & Pinion Shafts
Specifications
Screw

Screw
Gears

Gears
E
Precision
grade JIS B 1704: 1978 grade 3 F
J
Gear teeth Gleason I M K
Pressure J G
20°

E
angle

F
Material S45C

G
Worm
Gears

Worm
Gears
H
Heat H
treatment —*
C
D
B

Tooth A
hardness (less than 194HB)* B
Surface C
treatment Black oxide coating D
B8 B4
Gearboxes

Gearboxes
* The pinion is tempered and has the teeth
hardness of 200 to 270 HB.

No. of Bore/Shaft Dia. Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Length of bore and shaft Face width Holding surface dia. Length of shaft Socket head screw Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module
teeth
Shape
Size Catalog Number
AH7 (bore)
Ah7 (shaft) B C D E F G H I J K M Bending strength Surface durability Bending strength Surface durability (mm) (kg)
SB1.5-6012 60 B4 12 50 90 90.33 30 23.89 21.82 12 21 65.52 — — 18.0 1.41 1.83 0.14 0.62 SB1.5-6012
m1.5 12 0.05~0.15
Products

Products
SB1.5-1260 12 B8 12.2 15 18 22.24 50 97.06 5.42 4.7 17.06 — 80 M5 4.01 0.46 0.41 0.047 0.097 SB1.5-1260
Other

Other
SB2-6012 60 B4 15 60 120 120.43 40 31.85 29.09 16 27 86.96 — — 42.6 3.43 4.34 0.35 1.34 SB2-6012
m2 16 0.06~0.16
SB2-1260 12 B8 15.2 20 24 29.65 66 117.08 6.56 5.6 22.08 — 95 M6 9.50 1.12 0.97 0.11 0.19 SB2-1260
5
SB2.5-6012 60 B4 20 70 150 150.54 50 39.81 36.36 20 34 108.8 — — 83.2 6.85 8.48 0.70 2.54 SB2.5-6012
m2.5 20 0.07~0.17
SB2.5-1260 12 B8 20.2 25 30 37.06 83 143.1 8.7 7.5 28.1 — 115 M8 18.5 2.23 1.89 0.23 0.40 SB2.5-1260
SB3-6012 60 B4 20 80 180 180.65 60 47.43 43.64 25 41 134.73 — — 135 11.4 13.8 1.16 4.18 SB3-6012
m3 22 0.08~0.18
SB3-1260 12 B8 25.25 30 36 44.48 100 172.19 10.85 9.4 32.19 — 140 M8 30.1 3.70 3.07 0.38 0.74 SB3-1260

Product Precautions Page 338

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 SUB Module 1.5~3 Stainless Steel Bevel Gears
Stainless Steel Bevel Gears
Specifications
E
Precision
grade JIS B 1704: 1978 grade 3 F
G J
J K
Gear teeth Gleason H
Pressure
20°
Gears

Gears
E
Spur

Spur
angle
I

F
I

G
Material SUS303

H
Heat

C
B

D
K

A
treatment — A
Tooth B
hardness (less than 187HB)
C
Helical

Helical
D
Gears

Gears
B3 B4

Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth Shape Catalog Number
AH7 B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
SUB1.5-3020 30 B4 10 30 45 46.24 28 18.53 13.93 8 16 27.37 3.22 0.46 0.33 0.047 0.12 SUB1.5-3020
Gears

Gears
m1.5 9 0.05~0.15
SUB1.5-2030 20 B3 8 25 30 33.13 33 18.63 11.54 8.83 17 17.05 2.23 0.31 0.23 0.032 0.064 SUB1.5-2030
SUB2-3020 30 B4 10 35 60 61.65 40 26.87 21.24 15 23 37.56 7.22 1.08 0.74 0.11 0.27 SUB2-3020
m2 11 0.06~0.16
SUB2-2030 20 B3 10 35 40 44.18 45 25.06 16.39 13.33 22 21.34 5.01 0.72 0.51 0.074 0.16 SUB2-2030
1.5
SUB2.5-3020 30 B4 15 45 75 77.07 50 34.22 26.55 18 30 45.61 14.9 2.28 1.52 0.23 0.55 SUB2.5-3020
m2.5 15 0.07~0.17
SUB2.5-2030 20 B3 12 40 50 55.22 55 31.06 19.24 14.16 28 27.42 10.3 1.52 1.05 0.15 0.29 SUB2.5-2030
Racks

Racks
SUB3-3020 30 B4 15 60 90 92.48 55 35.56 26.86 17 31 57.14 24.8 3.87 2.53 0.39 0.95 SUB3-3020
m3 17 0.08~0.18
SUB3-2030 20 B3 15 50 60 66.27 70 40.48 27.09 21.66 37 34.71 17.2 2.58 1.76 0.26 0.56 SUB3-2030
SUB1.5-4020 40 B4 10 38 60 60.88 35 25.01 20.88 15 22 39.64 5.23 0.79 0.53 0.081 0.27 SUB1.5-4020
m1.5 10 0.05~0.15
SUB1.5-2040 20 B3 8 25 30 33.61 46 25.54 16.9 14.75 24 17.28 2.64 0.40 0.27 0.040 0.090 SUB1.5-2040
CP Racks &

CP Racks &
SUB2-4020 40 B4 12 50 80 81.17 45 32.37 26.17 18 27 48.46 13.4 2.07 1.36 0.21 0.62 SUB2-4020
Pinions

Pinions
m2 15 0.06~0.16
SUB2-2040 20 B3 12 32 40 44.81 60 34.16 21.2 18 32 20.92 6.72 1.04 0.69 0.11 0.19 SUB2-2040
2
SUB2.5-4020 40 B4 15 60 100 101.46 55 39.73 31.46 20 35 60.28 27.1 4.29 2.76 0.44 1.24 SUB2.5-4020
m2.5 20 0.07~0.17
SUB2.5-2040 20 B3 12 40 50 56.01 75 43.78 26.5 22.5 41 24.56 13.6 2.15 1.39 0.22 0.41 SUB2.5-2040
SUB3-4020 40 B4 20 70 120 121.76 65 45.85 36.76 24 38 73.81 44.4 7.19 4.53 0.73 1.89 SUB3-4020
m3 22 0.08~0.18
Gears

Gears
SUB3-2040 20 B3 16 50 60 67.22 90 50.81 31.8 27.5 47 29.61 22.4 3.60 2.28 0.37 0.70 SUB3-2040
Miter

Miter
SUB1.5-4515 45 B4 10 36 67.5 68.06 28 20.44 17.59 11 17 46.58 5.70 0.72 0.58 0.074 0.25 SUB1.5-4515
m1.5 10 0.05~0.15
SUB1.5-1545 15 B3 8 18 22.5 26.54 47 23.19 13.92 12.5 22.5 14.75 1.97 0.24 0.20 0.025 0.041 SUB1.5-1545
SUB2-4515 45 B4 12 60 90 90.75 40 30.4 26.12 17 26 59.04 14.6 1.90 1.49 0.19 0.82 SUB2-4515
m2 15 0.06~0.16
SUB2-1545 15 B3 10 24 30 35.35 60 29.8 15.89 14 29 19.13 5.03 0.63 0.51 0.065 0.097 SUB2-1545
3
Gears

Gears
Bevel

Bevel
SUB2.5-4515 45 B4 15 60 112.5 113.43 50 38.35 32.65 22 35 72.84 29.6 3.94 3.02 0.40 1.38 SUB2.5-4515
m2.5 20 0.07~0.17
SUB2.5-1545 15 B3 12 30 37.5 44.18 75 38.41 19.86 17.5 37 20.51 10.2 1.31 1.04 0.13 0.19 SUB2.5-1545
SUB3-4515 45 B4 20 80 135 136.12 55 40.74 34.18 20 35 88.18 49.9 6.77 5.09 0.69 2.36 SUB3-4515
m3 23 0.08~0.18
SUB3-1545 15 B3 15 38 45 53.02 90 45.17 23.84 21.33 43 22.53 17.2 2.26 1.76 0.23 0.34 SUB3-1545
Screw

Screw
Gears

Gears
Worm
Gears

Worm
Gears
Gearboxes

Gearboxes
Products

Products
Other

Other
Product Precautions Page 338
364 Contact us on the website! 365
 PB Module 1~3 Plastic Bevel Gears
Plastic Bevel Gears
Specifications
E
Precision
grade JIS B 1704: 1978 grade 4* F
G J
J K
Gear teeth Gleason H
Pressure
20°
Gears

Gears
E
Spur

Spur
angle
I

F
I

G
Material MC901

H
Heat

C
B

D
K

A
treatment — A
Tooth B
hardness (115 to 120HRR)
C
Helical

Helical
* The precision grade is equivalent to the value D
Gears

Gears
shown in the table. B3 B4

Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth Shape Catalog Number
A B C D E F G H I J K Bending strength Surface durability Bending strength Surface durability (mm) (kg)
Internal

Internal
PB1.5-3020 30 B4 10 30 45 46.24 28 18.53 13.93 8 16 27.37 1.61 0.16 0.018 PB1.5-3020
Gears

Gears
m1.5 9 0~0.25
PB1.5-2030 20 B3 8 25 30 33.13 33 18.63 11.54 8.83 17 17.05 0.87 0.089 0.0093 PB1.5-2030
PB2-3020 30 B4 10 35 60 61.65 40 26.87 21.24 15 23 37.56 3.65 0.37 0.039 PB2-3020
m2 11 0~0.26
PB2-2030 20 B3 10 35 40 44.18 45 25.06 16.39 13.33 22 21.34 1.97 0.20 0.024 PB2-2030
1.5 — —
PB2.5-3020 30 B4 15 45 75 77.07 50 34.22 26.55 18 30 45.61 7.46 0.76 0.081 PB2.5-3020
m2.5 15 0~0.27
PB2.5-2030 20 B3 12 40 50 55.22 55 31.06 19.24 14.16 28 27.42 4.04 0.41 0.042 PB2.5-2030
Racks

Racks
PB3-3020 30 B4 15 60 90 92.48 55 35.56 26.86 17 31 57.14 12.5 1.28 0.14 PB3-3020
m3 17 0~0.28
PB3-2030 20 B3 15 50 60 66.27 70 40.48 27.09 21.66 37 34.71 6.77 0.69 0.082 PB3-2030
PB1-4020 40 B4 8 25 40 40.59 22 15.07 12.59 8 12 26.58 0.74 0.075 0.010 PB1-4020
m1 6 0~0.23
PB1-2040 20 B3 6 16 20 22.41 28 13.78 8.6 7 12 9.17 0.28 0.028 0.0029 PB1-2040
CP Racks &

CP Racks &
PB1.25-4020 40 B4 10 32 50 50.73 27 18.54 15.23 10 16 33.61 1.50 0.15 0.021 PB1.25-4020
Pinions

Pinions
m1.25 8 0~0.24
PB1.25-2040 20 B3 8 22 25 28.01 36 18.66 11.75 10.25 17 13.22 0.56 0.058 0.0068 PB1.25-2040
PB1.5-4020 40 B4 10 38 60 60.88 35 25.01 20.88 15 22 39.64 2.66 0.27 0.039 PB1.5-4020
m1.5 10 0~0.25
PB1.5-2040 20 B3 8 25 30 33.61 46 25.54 16.9 14.75 24 17.28 1.00 0.10 0.013 PB1.5-2040
2 — —
PB2-4020 40 B4 12 40 80 81.17 45 32.37 26.17 18 27 48.46 6.72 0.69 0.076 PB2-4020
m2 15 0~0.26
Gears

Gears
PB2-2040 20 B3 12 32 40 44.81 60 34.16 21.2 18 32 20.92 2.52 0.26 0.028 PB2-2040
Miter

Miter
PB2.5-4020 40 B4 15 50 100 101.47 55 39.73 31.47 20 35 60.28 13.5 1.38 0.16 PB2.5-4020
m2.5 20 0~0.27
PB2.5-2040 20 B3 12 40 50 56.01 75 43.78 26.5 22.5 41 24.56 5.08 0.52 0.060 PB2.5-2040
PB3-4020 40 B4 20 60 120 121.76 65 45.85 36.76 24 38 73.81 22.4 2.29 0.25 PB3-4020
m3 22 0~0.28
PB3-2040 20 B3 16 50 60 67.22 90 50.81 31.8 27.5 47 29.61 8.42 0.86 0.10 PB3-2040
Gears

Gears
Bevel

Bevel
PB1.5-4515 45 B4 10 40 67.5 68.06 28 20.44 17.59 11 17 46.58 3.18 0.32 0.040 PB1.5-4515
m1.5 10 0~0.25
PB1.5-1545 15 B3 8 18 22.5 26.54 47 23.19 13.92 12.5 22.5 14.75 0.68 0.070 0.0061 PB1.5-1545
PB2-4515 45 B4 12 60 90 90.75 40 30.4 26.12 17 26 59.04 8.07 0.82 0.12 PB2-4515
m2 15 0~0.26
PB2-1545 15 B3 10 24 30 35.35 60 29.8 15.89 14 29 19.13 1.73 0.18 0.014 PB2-1545
3 — —
PB2.5-4515 45 B4 15 60 112.5 113.43 50 38.35 32.65 22 35 72.84 16.3 1.66 0.20 PB2.5-4515
m2.5 20 0~0.27
Screw

Screw
Gears

Gears
PB2.5-1545 15 B3 12 30 37.5 44.18 75 38.41 19.86 17.5 37 20.51 3.50 0.36 0.028 PB2.5-1545
PB3-4515 45 B4 20 80 135 136.12 55 40.74 34.18 20 35 88.18 27.6 2.81 0.35 PB3-4515
m3 23 0~0.28
PB3-1545 15 B3 15 38 45 53.02 90 45.17 23.84 21.33 43 22.54 5.92 0.60 0.050 PB3-1545
Worm
Gears

Worm
Gears
Gearboxes

Gearboxes
Products

Products
Other

Other
* In regard to MC Nylon gears, other materials are available for plastic gears,
including Ultra High Molecular Weight Polyethylene (U-PE), which has excellent
abrasion resistance and resin conforming to the Plastic Implementation Measure
(PIM). A single piece order is acceptable and will be produced as a custom-made
gear. Please see Page 26 for more details on quotations and orders.

Product Precautions Page 338

366 Contact us on the website! 367
 DB Module 0.5~1 Injection Molded Bevel Gears
Injection Molded Bevel Gears
Specifications E
Precision F
grade JIS B 1704: 1978 grade 6
G K J
Gear teeth Gleason J H

E
Pressure
20°
Gears

Gears
Spur

Spur
angle

F
G
Material Duracon (R) (M90-44) *

H
Heat
—

B
D
A
treatment
Tooth A
hardness (110 to 120HRR) B
Helical

Helical
D
Gears

Gears
* "Duracon (R)" is a registered trademark of
Polyplastics Co., Ltd. in Japan as well as other B1 B9
countries.

Bore Hub dia. Pitch dia. Outside dia. Mounting distance Total length Crown to back Hub width Hole length Face width Holding surface dia. Allowable torque (N·m) Allowable torque (kgf·m) Backlash Weight
Catalog Number Gear Ratio Module No. of teeth Shape Catalog Number
A B D E F G H I J K Bending strength Bending strength (mm) (g)
Internal

Internal
DB0.5-4020 40 B9 4 12 20 20.29 12 8.33 7.29 4 7 14.41 0.24 0.025 2.00 DB0.5-4020
Gears

Gears
m0.5 2.5 0~0.30
DB0.5-2040 20 B1 3 8 10 11.2 16 8.46 6.3 4 — — 0.092 0.0094 0.54 DB0.5-2040
DB0.8-4020 40 B9 5 15 32 32.47 18 11.91 10.47 6 10 24.17 0.91 0.093 6.26 DB0.8-4020
2 m0.8 3.5 0~0.48
DB0.8-2040 20 B1 4 12 16 17.92 24 11.5 8.48 5 — — 0.34 0.035 1.87 DB0.8-2040
DB1-4020 40 B9 6 18 40 40.59 22 14.45 12.59 7.5 12.5 30.44 1.59 0.16 11.9 DB1-4020
m1 4.5 0~0.60
DB1-2040 20 B1 5 15 20 22.4 30 14.49 10.6 7 — — 0.60 0.061 3.54 DB1-2040
Racks

Racks
■ Dimensional tolerance of molded item (unit: mm)
CP Racks &

CP Racks &
Pinions

Pinions
Grade
Rough grade
Dimensional classification
3 or less ±0.20
4 to 6 ±0.25
7 to 10 ±0.30
Gears

Gears
Miter

Miter
11 to 18 ±0.35
19 to 30 ±0.40
Over 30 ±0.50
Gears

Gears
Bevel

Bevel
Screw

Screw
Gears

Gears
BB Sintered Metal Bushings
Sintered Metal Bushings
Worm
Gears

Worm
Gears
L
When using the injection molded bevel
gear as an idler gear and a shaft diameter
smaller than the inside diameter of the
Gearboxes

Gearboxes
molded gear, please press fit one of the
D
d

following standard bushings.

T8
Products

Products
Other

Other
Inner dia. Outside dia. Length
Catalog Number Gear example
0d 0 D +0.02 L -0.3
+0.02+0.02 +0.02 0 0
-0.01 - 0.01 -0.01

BB30507 3 5 7 DB0.8
BB40612 4 6 12 DB1
Material: Oil-free copper alloy

Product Precautions Page 338

368 Contact us on the website! 369
 KSP Made by Nissei Ground Spiral Bevel Gears
Ground Spiral Bevel Gears

■ Transmission capacity table

1. The values in the transmission capacity table below are where the ■ Service factor (Sf)
Gears

Gears
Spur

Spur
service factor is 1. Be sure to correct the load torque according to the
Impact from load
table on the right. The corrected load torque is calculated by multiplying Impact from motor
Uniform load Moderate impact Severe impact
the load torque applied to the output shaft by service factor (Sf).
Uniform load
2. When using at increased speed (where gear is drive and pinion is 1.0 1.25 1.75
(electric motor, turbine, hydraulic motor, etc.)
Helical

Helical
Gears

Gears
driven), the torque of the pinion is the value obtained by multiplying
Mild impact (multi-cylinder engine) 1.25 1.5 2.0
the value shown in the transmission capacity table by the speed ratio.
NOTE 1: When the speed ratio is 1/1.5, the pinion torque
Moderate impact (single-cylinder engine) 1.5 1.75 2.25
is 1/1.5 of the value shown in the transmission
Internal

Internal
capacity table.
Gears

Gears
■ Transmission capacity table (speed ratio 1/1) Upper transmission capacity (kw) Lower output torque (N·m)
Rotational speed (rpm)
Figure number 50 100 300 600 900 1200 1800 3000
0.035 0.068 0.195 0.375 0.548 0.716 1.04 1.65
KSP031001
6.65 6.51 6.20 5.98 5.82 5.69 5.51 5.25
Racks

Racks
0.092 0.179 0.511 0.980 1.43 1.86 2.69 4.25
KSP040001
17.6 17.2 16.3 15.6 15.2 14.8 14.3 13.5
0.211 0.412 1.17 2.23 3.25 4.22 6.08 9.55
KSP053001
40.4 39.3 37.3 35.6 34.5 33.6 32.3 30.4
0.367 0.715 2.02 3.85 5.59 7.26 10.4 16.3
KSP066001
CP Racks &

CP Racks &
70.2 68.3 64.4 61.4 59.3 57.8 55.4 52.0
0.577 1.12 3.16 6.00 8.68 11.2 16.1 25.1
Pinions

Pinions
KSP078001
109.8 106.9 101.0 95.5 92.2 89.5 85.5 79.8
0.901 1.75 4.91 9.31 13.5 17.4 24.9 38.6
KSP092001
172.6 166.7 156.9 148.1 143.2 138.3 132.4 122.6
1.44 2.78 7.80 14.7 21.2 27.4 39.1 60.3
KSP105001
274.6 265.8 248.1 234.4 225.6 218.7 207.9 192.2
2.33 4.50 12.6 23.6 34.0 43.7 62.0 95.0
Gears

Gears
KSP132001
Miter

Miter
445.2 430.5 400.1 376.6 360.9 348.1 329.5 302.0

■ Catalog number ■ Features of KSP spiral bevel gears KSP157001

3.68
704.1
7.10
678.6
19.7
628.6
37.0
589.4
53.0
562.9
68.1
542.3
96.2
510.9
146
466.8
5.31 10.2 28.3 52.8 75.5 96.8 136 206
Note that the catalog numbers for KSP ground spiral bevel 1. High-strength, high-precision product of JIS grade 0. KSP184001
1010 976.7 901.2 841.4 801.2 770.8 722.8 656.1

gears have a different configuration compared to other 2. Superior performance with regard to high speed, low
Gears

Gears
Bevel

Bevel
miters and bevel gears. noise, and low vibration.
■ Transmission capacity table (speed ratio 1/1.5) Upper transmission capacity (kw) Lower output torque (N·m)
3. Module is 1.5 to 6
Rotational Speed of Pinion (rpm)
50 100 300 600 900 1200 1800 3000
4. Gear ratio types are 1, 1.5 and 2 Figure number
KSP 031 001 G U L KSP0481.5
0.077 0.151 0.432 0.830 1.21 1.58 2.29 3.64
Screw

Screw
22.2 21.6 20.6 19.8 19.3 18.9 18.2 17.4
Gears

Gears
0.159 0.309 0.882 1.69 2.46 3.21 4.64 7.33
KSP0611.5
Direction of spiral (left) 45.4 44.3 42.2 40.4 39.2 38.3 37.0 35.0

■ Shape KSP0741.5
0.277
79.4
0.540
77.4
1.53
73.4
2.93
70.1
4.27
68.0
5.55
66.3
8.00
63.7
12.6
60.1
Product shape (prevents carburizing) KSP0901.5
0.466 0.908 2.57 4.90 7.12 9.24 13.3 20.8
Shape for secondary operations (with margin) 133.4 130.4 122.6 116.7 113.8 110.8 105.9 99.0
Worm
Gears

Worm
Gears
0.700 1.36 3.84 7.31 10.6 13.7 19.7 30.7
Tooth surface finish (ground) * T
 he parts in the figure below are protected from KSP1051.5
201.0 195.2 183.4 174.6 168.7 163.8 156.9 147.1
carburizing. KSP1241.5
1.03 2.00 5.63 10.7 15.5 20.0 28.6 44.5

Gear Ratio (1) 295.2 286.4 268.7 255.0 246.1 239.3 227.5 212.8
1.56 3.03 8.51 16.1 23.2 30.1 42.9 66.4
KSP1411.5
448.2 434.4 406.0 384.4 370.7 358.9 341.3 317.7
Gearboxes

Gearboxes
Gear outer diameter (31 mm) KSP1631.5
2.27 4.39 12.3 23.2 33.4 43.1 61.4 94.6
650.2 628.6 587.4 554.1 532.5 514.8 489.4 452.1
2.92 5.64 15.8 29.7 42.7 55.1 78.3 120
Type (Spiral Miter) KSP1811.5
836.5 809.0 754.1 710.0 680.6 658.0 623.7 574.7
Products

Products
Other

Other
■ Transmission capacity table (speed ratio 1/2) Upper transmission capacity (kw) Lower output torque (N·m)
Rotational Speed of Pinion (rpm)
Figure number 50 100 300 600 900 1200 1800 3000
0.025 0.049 0.142 0.275 0.404 0.528 0.770 1.23
KSP039002
9.63 9.45 9.07 8.76 8.57 8.41 8.17 7.83
0.075 0.147 0.423 0.814 1.19 1.55 2.26 3.59
KSP056002
28.8 28.1 27.0 26.0 25.3 24.8 23.9 22.8
0.185 0.361 1.03 1.98 2.89 3.76 5.45 8.61
KSP075002
70.7 69.0 65.7 63.1 61.3 59.9 57.9 54.8
0.364 0.710 2.02 3.86 5.62 7.31 10.5 16.6
KSP096002
139.3 135.3 128.5 122.6 119.6 116.7 111.8 105.9
0.649 1.26 3.58 6.82 9.90 12.9 18.5 29.0
KSP119002
248.1 241.2 227.5 217.7 209.9 205.0 196.1 184.4
1.07 2.08 5.87 11.2 16.2 21.0 30.1 46.9
KSP145002
408.9 397.2 373.6 356.0 343.2 333.4 319.7 298.1
1.78 3.45 9.72 18.4 26.6 34.5 49.3 76.5
KSP172002
680.6 660.0 618.8 587.4 565.8 549.2 523.7 487.4

370 371
 KSP Module 1.5~6 Made by Nissei Ground Spiral Bevel Gears
Ground Spiral Bevel Gears
Specifications E E E E
Precision
grade JIS B 1704: 1978 grade 0
Gear teeth Gleason
Pressure
Gears

Gears
20°
Spur

Spur
A

A
C

B
D

C
D
angle

C
D
A

C
D
A
B
Helix angle 35°
Material SCM415*
Heat Carburized (Bore and hub are F F
treatment carburized) F
F
Helical

Helical
Tooth
Gears

Gears
hardness 60 to 63HRC** G G
G G
* The material of module 3.5 and above is SCM420. H A H A' B C
** Modules 1.5 and 2 have the tooth hardness of 80 to 83 HRA. H H

Direction of Outside dia. Holding surface dia. Bore Hub dia. Hole length Hub width Total length Mounting distance Machinable Allowable torque Backlash Weight
Catalog Number Gear Ratio Module No. of teeth
spiral
Pitch dia. Face width Shape
MAX bore (kgf·m) Catalog Number
A B CH7 D E F G H (mm) (kg)
Internal

Internal
KSP031001GU L L KSP031001GU L
Gears

Gears
m1.5 20 30 7 A 30.5 16.5 10 22 13 6 15 25 12 0.61 0 ~0.05 0.04
KSP031001GU R R KSP031001GU R
KSP040001GU L L KSP040001GU L
m2 20 40 9 B 40 22.5 12 31 14 7 16.5 30 16 1.59 0 ~0.05 0.09
KSP040001GU R R KSP040001GU R
KSP078001GU L L KSP078001GU L
m3.5 22 77 18 B 78 43 20 54 27 12 32 57 32 9.74 0.05~0.10 0.59
KSP078001GU R R KSP078001GU R
Racks

Racks
KSP105001GU L L KSP105001GU L
1 m4.5 23 103.5 25 C 105 50 26 70 35 14 39 72 40 23.9 0.05~0.10 1.33
KSP105001GU R R KSP105001GU R
KSP132001GU L L KSP132001GU L
m5 26 130 29 C 132 64 30 82 41 14 45 88 48 38.4 0.05~0.10 2.49
KSP132001GU R R KSP132001GU R
CP Racks &

CP Racks &
KSP157001GU L L KSP157001GU L
Pinions

Pinions
m5.5 28 154 34 C 157 76 32 92 47 20 53.5 105 55 60.1 0.05~0.10 3.90
KSP157001GU R R KSP157001GU R
KSP184001GU L L KSP184001GU L
m6 30 180 38 C 184 84 40 101 51 17 56.5 118 62 85.8 0.05~0.10 5.79
KSP184001GU R R KSP184001GU R
KSP0481.5GU P 16 L 32 A' 34 17.5 10 24 13 4.5 14.5 31 — 0.05 KSP0481.5GU P
m2 9 2.02 0 ~0.05
Gears

Gears
KSP0481.5GU G 24 R 48 B 48 30 12 30 17 7 19 30 20 0.14 KSP0481.5GU G
Miter

Miter
1.5
KSP0741.5GU P 18 L 49.5 A' 52 27 14 40 20 6 22 46 20 0.20 KSP0741.5GU P
m2.75 15 7.15 0.05~0.10
KSP0741.5GU G 27 R 74.25 B 74 44.5 20 50 25 12 29 45 35 0.49 KSP0741.5GU G
KSP075002GU P 15 L 37.5 A' 40 20 12 30 17 4.5 19.5 44 14 0.10 KSP075002GU P
m2.5 14 6.43 0.05~0.10
KSP075002GU G 30 R 75 C 75 36 16 44 24 11 25.5 38 25 0.44 KSP075002GU G
Gears

Gears
Bevel

Bevel
KSP096002GU P 16 L 48 B 53 23.5 12 36 19 2.5 21.5 53 19 0.20 KSP096002GU P
2 m3 18 12.5 0.05~0.10
KSP096002GU G 32 R 96 C 96 46 20 56 29 12 31 47 32 0.91 KSP096002GU G
KSP119002GU P 17 L 59.5 A 65 34 16 44 25 3.6 27.5 67 25 0.36 KSP119002GU P
m3.5 22 22.2 0.05~0.10
KSP119002GU G 34 R 119 C 119 54 26 63 34 15 35.5 55 40 1.45 KSP119002GU G
Screw

Screw
Gears

Gears
Worm
Gears

Worm
Gears
Gearboxes

Gearboxes
Products

Products
Other

Other
Product Precautions Page 338
372 Contact us on the website! 373
 KSP Made by Nissei

Ground Spiral Bevel Gears

■ Adjustment of tooth contact

Screw Gears
Gears

Gears
Spur

Spur
SN-H SN SUN AN PN
<Center of tooth contact> (1) Tooth contact in case of a shaft-angle error Hardened Screw Gears Screw Gears Stainless Steel Screw Gears Screw Gears Plastic Screw Gears
NEW J J J J M J
(1) Near the center of the tooth length for the length direction
Helical

Helical
Gears

Gears
(2) Ideally, the tooth width direction should be at the center
of the width or slightly closer to the toe.
Material: S45C Material: S45C Material: SUS303 Material: CAC702 (AℓBC2) Material: MC901
Internal

Internal
m 1~4 Page 380 m 1~4 Page 380 m 1~3 Page 384 m 1~3 Page 386 m 1~3 Page 388
Gears

Gears
When adjusting the backlash and mounting the gear in the
case, adjust the case in order to achieve the tooth contact Error M Includes Made to Order
as shown in the figure below.
Deviation of the tooth contact from the normal position
Racks

Racks
Toe contact
may adversely affect the strength and quietness.

Heel contact
CP Racks &

CP Racks &
Heel
Pinions

Pinions
Error
Gears

Gears
Miter

Miter
Toe

Gears
Gears
Bevel

Bevel
(2) Tooth contact in case of a shaft-offset error (3) Tooth contact in case of a pinion set position error

Screw
Screw

Gears
Gears

Heel contact Contact close to tooth root

Contact of tooth tip contact
Toe contact Heel contact
Catalog Number of KHK Stock Gears
The Catalog Number for KHK stock gears is based on the simple formula listed below. Please order KHK gears by specifying the

Worm
Gears
Worm
Gears

Error Error
Catalog Numbers.

(Example) Screw Gears

S N 1 - 13 R
Gearboxes

Gearboxes
Contact of tooth tip contact
Contact close to tooth root

Contact of tooth tip contact

Toe contact Direction of Helix (Right) Material Type
Heel contact Contact close to tooth root
S S45C N Screw Gears
Products

Products
Toe contact
No. of Teeth (13)
Other

Other
SU Stainless Steel
Module (1)
A CAC702
Error
Type (Screw Gears) P MC901
Error Material (S45C)

Contact close to tooth root

Contact of tooth tip contact

374 375