[Steel Ring Gears (Spur Gears) (SSR)] Series list   
diagram
Specifications
Precision grade JIS B 1702-1 grade N9 (*1) Surface hardness (less than HB194)
Gear teeth Standard full depth Surface treatment Black oxide
Pressure angle 20° Surface finish Cut
Material S45C Datum reference surface for teeth cutting Bore
Heat treatment - Modifications Possible
(*1) Old JIS B 1702 grade 5
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Catalog No.
Module
No. of teeth
Shape Bore
A
Pitch dia.
C
Outside dia.
D
Face width
E
Allowable torque(kgf·m)
Bending strength
Allowable torque(kgf·m)
Surface durability
Backlash low
(mm)
Backlash up
(mm)
Weight
(kg)
Unit Price
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  SSR2-120 
  SSR2-200 
  SSR2.5-120 
  SSR2.5-200 
  SSR3-120 
  SSR3-160 
2120S51942402442037.44.490.170.372.46 
2200S53544004042064.38.590.200.414.28 
2.5120S52453003052572.99.020.190.414.62 
2.5200S54455005052512617.20.220.468.01 
3120S52963603663012616.00.220.457.77 
3160S54164804863017123.00.220.4510.6 
Product Precautions
[Caution on Product Characteristics]  ①The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see Selection Hints for more details.
 ②The backlash values shown in the table are the theoretical values for the normal direction for a pair of identical SS Spur Gears with 30 teeth in mesh.
 ③Although the inside diameter of these gears are made to H8 tolerance, since the ring shape is easily deformed, some error may occur beyond the stated tolerance.

[Caution on Secondary Operations]  ①Please read “Cautions on Performing Secondary Operations” when performing modification and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.
 ②Avoid performing secondary operations that narrow the tooth width. as it affects precision and strength.
  Please click here to Unit Price & Delivery Time.