Quality Transmission is the largest North American supplier of off-the-shelf metric gearing. KHK Stock Gears are proudly produced by Kohara Gear Industry of Saitama Japan and stocked in North America by Quality Transmission Components



Specifications
Precision grade JIS Grade N9 (JIS B 1702-1:1998)
JIS Grade 5 (JIS B 1702:1976)
Gear teeth Standard full depth
Pressure angle 20
Material S45c Steel
Heat treatment -
Core hardness less than HB194
Surface hardness
Surface treatment Black oxide
Surface finish Hobbed
Datum reference surface
for gear cutting		 Bore

S5

Module 2

Catalog No. Module No. of teeth Bore Pitch dia. Outside dia. Face width Shape Allowable
torque (kgfm)		 Allowable
torque (Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
m z AH8 C D E Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSR2-120
[ DXF| DWG| 3D CAD]
SSR2-200
[ DXF| DWG| 3D CAD]		 2

2		 120

200		 194

354		 240

400		 244

404		 20

20		 S5

S5		 37.35

64.27		 4.489

8.589		 366.3

630.3		 44.02

84.23		 0.220.44

0.260.52		 2.5

4.3		 SSR2-120

SSR2-200

Module 2.5

Catalog No. Module No. of teeth Bore Pitch dia. Outside dia. Face width Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
m z AH8 C D E Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSR2.5-120
[ DXF| DWG| 3D CAD]
SSR2.5-200
[ DXF| DWG| 3D CAD]		 2.5

2.5		 120

200		 245

445		 300

500		 305

505		 25

25		 S5

S5		 72.94

125.5		 9.021

17.23		 715.3

1231		 88.46

169		 0.240.48

0.280.58		 4.6

8.0		 SSR2.5-120

SSR2.5-200

Module 3

Catalog No. Module No. of teeth Bore Pitch dia. Outside dia. Face width Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
m z AH8 C D E Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSR3-120
[ DXF| DWG| 3D CAD]
SSR3-160
[ DXF| DWG| 3D CAD]		 3

3		 120

160		 296

416		 360

480		 366

486		 30

30		 S5

S5		 126

171.4		 15.96

23.04		 1236

1681		 156.5

225.9		 0.260.52

0.30.64		 7.8

10.6		 SSR3-120

SSR3-160

CAUTION: Although the inside diameter of these gears is produced to an H8 tolerance, since the ring shape is easily deformed, some error may occur beyond the stated tolerance.

NOTE: Allowable torques shown in the table are calculated based on the assumed usage conditions. The backlash values shown are the theoretical values of a pair of identical gears in mesh. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.

 

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