[Internal Gears (SI)] Series list   
diagram
Specifications
Precision grade JIS B 1702-1 grade N8 (*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 Outside diameter
Heat treatment - Modifications Possible
(*1) Old JIS B 1702 grade 4 ·Product accuracy class having a module less than 0.8 corresponds to 'equivalent' as shown in the table.
  1 / 1 Page      22 items in total    Module   No. of Teeth       
< 1 >    precaution    
Catalog No.
Module
No. of teeth
Shape Outside dia.
A
Pitch dia.
C
Outside dia. of ring
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
Click Here
  SI0.5-60 
  SI0.5-80 
  SI0.5-100 
  SI0.8-60 
  SI0.8-80 
  SI0.8-100 
  SI1-60 
  SI1-80 
  SI1-100 
  SI1.5-50 
  SI1.5-60 
  SI1.5-80 
  SI1.5-100 
  SI2-50 
  SI2-60 
  SI2-80 
  SI2-100 
  SI2.5-50 
  SI2.5-60 
  SI2.5-80 
  SI3-50 
  SI3-60 
0.560T129305050.380.0680.040.150.049 
0.580T139406050.490.0770.040.150.062 
0.5100T149507050.610.0890.040.150.074 
0.860T146.4487581.570.290.050.160.16 
0.880T162.4649082.030.330.050.160.20 
0.8100T178.48010582.500.380.050.160.23 
160T1586090103.060.610.100.220.28 
180T17880110103.960.670.100.220.35 
1100T198100130104.870.780.120.250.43 
1.550T17275115158.882.130.130.290.70 
1.560T187901301510.32.10.130.290.81 
1.580T11171201601513.42.380.130.291.04 
1.5100T11471501901516.52.750.150.321.26 
250T1961001502021.05.130.160.331.54 
260T11161201702024.55.150.160.331.79 
280T11561602102031.75.810.160.332.28 
2100T11962002502039.06.70.170.372.77 
2.550T11201251852541.110.30.170.372.87 
2.560T11451502102547.810.30.170.373.33 
2.580T11952002602561.911.60.170.374.25 
350T11441502203071.018.10.190.414.79 
360T11741802503082.718.20.190.415.57 
Product Precautions
[Caution on Product Characteristics]  ①The 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.
 ②The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see precaution for more details.
 ③Please check for the involute interference, trochoid interference and trimming interference prior to using internal gears.

[Caution on Secondary Operations]  ①Please read “Cautions on Performing Secondary Operations”when performing modification and/or secondary operations of Internal Gears. 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.