[Brass Spur Gears (BSS)] Series list   
diagram
Specifications
Precision grade JIS B 1702-1 grade N8 (*1) Surface hardness (more than HV80)
Gear teeth Standard full depth Surface treatment -
Pressure angle 20° Surface finish Cut
Material Free cutting brass(C3604) Datum reference surface for teeth cutting Bore (H7)
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 / 2 Page      121 items in total    Module   No. of Teeth       
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Catalog No.
Module
No. of teeth
Shape Bore
A
Hub dia.
B
Pitch dia.
C
Outside dia.
D
Face width
E
Hub Width
F
Total length
G
Key width
Key depth
Socket head screw
Size
Socket head screw
J
Allowable torque(kgf·m)
Bending strength
Backlash low
(mm)
Backlash up
(mm)
Weight
(kg)
Unit Price
Click Here
  BSS0.5-15A 
  BSS0.5-16A 
  BSS0.5-17A 
  BSS0.5-18A 
  BSS0.5-19A 
  BSS0.5-20 
  BSS0.5-20A 
  BSS0.5-20B 
  BSS0.5-21A 
  BSS0.5-22A 
  BSS0.5-23A 
  BSS0.5-24A 
  BSS0.5-24B 
  BSS0.5-25 
  BSS0.5-25A 
  BSS0.5-25B 
  BSS0.5-26A 
  BSS0.5-27A 
  BSS0.5-28A 
  BSS0.5-29A 
  BSS0.5-30 
  BSS0.5-30A 
  BSS0.5-30B 
  BSS0.5-30C 
  BSS0.5-32A 
  BSS0.5-34A 
  BSS0.5-35A 
  BSS0.5-36A 
  BSS0.5-38A 
  BSS0.5-40 
  BSS0.5-40A 
  BSS0.5-40B 
  BSS0.5-50A 
  BSS0.5-50B 
  BSS0.5-60A 
  BSS0.5-60B 
  BSS0.5-70A 
  BSS0.5-70B 
  BSS0.5-80A 
  BSS0.5-80B 
  BSS0.8-15A 
  BSS0.8-16A 
  BSS0.8-17A 
  BSS0.8-18A 
  BSS0.8-19A 
  BSS0.8-20 
  BSS0.8-20A 
  BSS0.8-20B 
  BSS0.8-21A 
  BSS0.8-22A 
  BSS0.8-23A 
  BSS0.8-24A 
  BSS0.8-24B 
  BSS0.8-25 
  BSS0.8-25A 
  BSS0.8-25B 
  BSS0.8-26A 
  BSS0.8-27A 
  BSS0.8-28A 
  BSS0.8-29A 
  BSS0.8-30 
  BSS0.8-30A 
  BSS0.8-30B 
  BSS0.8-30C 
  BSS0.8-32A 
  BSS0.8-34A 
  BSS0.8-35A 
  BSS0.8-36A 
  BSS0.8-38A 
  BSS0.8-40 
  BSS0.8-40A 
  BSS0.8-40B 
  BSS0.8-50A 
  BSS0.8-50B 
  BSS0.8-60A 
  BSS0.8-60B 
  BSS1-15A 
  BSS1-15B 
  BSS1-16A 
  BSS1-16B 
  BSS1-17A 
  BSS1-18A 
  BSS1-18B 
  BSS1-19A 
  BSS1-20A 
  BSS1-20B 
  BSS1-20C 
  BSS1-21A 
  BSS1-22A 
  BSS1-23A 
  BSS1-24A 
  BSS1-24B 
  BSS1-24C 
  BSS1-25A 
  BSS1-25B 
  BSS1-25C 
  BSS1-26A 
  BSS1-26B 
  BSS1-27A 
  BSS1-28A 
0.515S3T38.57.58.531114  M32.50.005900.100.0054 
0.516S3T398931114  M32.50.006600.100.0062 
0.517S3T39.58.59.531114  M32.50.007200.100.0070 
0.518S3T31091031114  M32.50.007900.100.0079 
0.519S3T310.59.510.531114  M32.50.008600.100.0088 
0.520S148.510113710    0.009300.100.0043 
0.520S3T311101131114  M32.50.009300.100.0098 
0.520S3T411101131114  M32.50.009300.100.0091 
0.521S3T311.510.511.531114  M32.50.009900.100.011 
0.522S1T3911123710  M33.50.01100.100.0054 
0.523S1T3911.512.53710  M33.50.01100.100.0056 
0.524S1T31012133710  M33.50.01200.100.0067 
0.524S1T41012133710  M33.50.01200.100.0063 
0.525S141112.513.53710    0.01300.100.0077 
0.525S1T31012.513.53710  M33.50.01300.100.0070 
0.525S1T41012.513.53710  M33.50.01300.100.0065 
0.526S1T31013143710  M33.50.01300.100.0072 
0.527S1T31013.514.53710  M33.50.01400.100.0075 
0.528S1T31214153710  M33.50.01500.100.0097 
0.529S1T31214.515.53710  M33.50.01600.100.010 
0.530S141315163710    0.01600.100.011 
0.530S1T31215163710  M33.50.01600.100.010 
0.530S1T41215163710  M33.50.01600.100.0099 
0.530S1T51215163710  M43.50.01600.100.0092 
0.532S1T41416173710  M33.50.01800.100.013 
0.534S1T41517183710  M33.50.01900.100.015 
0.535S1T41517.518.53710  M33.50.02000.100.015 
0.536S1T41618193710  M33.50.02100.100.017 
0.538S1T41619203710  M33.50.02200.100.018 
0.540S141720213710    0.02400.100.020 
0.540S1T41820213710  M33.50.02400.100.022 
0.540S1T51820213710  M43.50.02400.100.021 
0.550S1T42225263710  M33.50.03100.100.033 
0.550S1T52225263710  M43.50.03100.100.032 
0.560S1T52830313710  M43.50.03900.100.052 
0.560S1T62830313710  M43.50.03900.100.051 
0.570S1T52835363710  M43.50.04700.100.058 
0.570S1T62835363710  M43.50.04700.100.057 
0.580S1T52840413710  M43.50.05500.100.065 
0.580S1T62840413710  M43.50.05500.100.065 
0.815S1T491213.64812  M340.02000.100.0067 
0.816S1T41012.814.44812  M340.02200.100.0082 
0.817S1T41013.615.24812  M340.02500.100.0088 
0.818S1T41014.4164812  M340.02700.100.0094 
0.819S1T41215.216.84812  M340.02900.100.012 
0.820S1513.51617.64812    0.03200.100.014 
0.820S1T4121617.64812  M340.03200.100.013 
0.820S1T5121617.64812  M440.03200.100.012 
0.821S1T51416.818.44812  M440.03400.100.015 
0.822S1T51517.619.24812  M440.03600.100.018 
0.823S1T51518.4204812  M440.03900.100.018 
0.824S1T41619.220.84812  M340.04100.100.022 
0.824S1T51619.220.84812  M440.04100.100.021 
0.825S15172021.64812    0.04300.100.024 
0.825S1T4162021.64812  M340.04300.100.023 
0.825S1T5162021.64812  M440.04300.100.022 
0.826S1T51820.822.44812  M440.04600.100.026 
0.827S1T51821.623.24812  M440.04800.100.027 
0.828S1T51822.4244812  M440.05100.100.028 
0.829S1T52023.224.84812  M440.05300.100.033 
0.830S15202425.64812    0.05600.100.034 
0.830S1T4202425.64812  M340.05600.100.035 
0.830S1T5202425.64812  M440.05600.100.034 
0.830S1T6202425.64812  M440.05600.100.033 
0.832S1T52225.627.24812  M440.06100.100.040 
0.834S1T52227.228.84812  M440.06600.100.042 
0.835S1T5252829.64812  M440.06800.100.051 
0.836S1T52528.830.44812  M440.07100.100.052 
0.838S1T52530.4324812  M440.07600.100.055 
0.840S15203233.64812    0.08100.100.046 
0.840S1T5283233.64812  M440.08100.100.066 
0.840S1T6283233.64812  M440.08100.100.065 
0.850S1T5284041.64812  M440.1100.100.081 
0.850S1T6284041.64812  M440.1100.100.080 
0.860S1T5284849.64812  M440.1300.100.100 
0.860S1T6284849.64812  M440.1300.100.099 
115S3T417151761521  M340.0480.080.180.035 
115S3T517151761521  M440.0480.080.180.034 
116S1T41216186814  M340.0530.080.180.016 
116S1T51216186814  M440.0530.080.180.015 
117S1T61417196814  M440.0580.080.180.018 
118S1T51518206814  M440.0630.080.180.022 
118S1T61518206814  M440.0630.080.180.021 
119S1T61619216814  M440.0690.080.180.024 
120S1T41620226814  M340.0740.080.180.028 
120S1T51620226814  M440.0740.080.180.027 
120S1T61620226814  M440.0740.080.180.026 
121S1T61821236814  M440.0800.080.180.031 
122S1T61822246814  M440.0850.080.180.033 
123S1T62023256814  M440.0910.080.180.038 
124S1T52024266814  M440.0960.080.180.041 
124S1T62024266814  M440.0960.080.180.040 
124S1T82024266814  M540.0960.080.180.037 
125S1T52225276814  M440.100.080.180.047 
125S1T62225276814  M440.100.080.180.046 
125S1T82225276814  M540.100.080.180.044 
126S1T62226286814  M440.110.080.180.048 
126S1T82226286814  M540.110.080.180.046 
127S1T62227296814  M440.110.080.180.051 
128S1T62528306814  M440.120.080.180.060 
Product Precautions
[Caution on Product Characteristics]  ①Keyways are made according to JIS B1301 standards and Js 9 tolerance. For products with a tapped hole, a set screw is included as an accessory.
 ②The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see Selection Hints for more details.
 ③The backlash values shown in the table are the theoretical values for the backlash in the normal direction of a pair of identical gears in mesh.
 ④If the bore size is less thanφ4, the tolerance class is H8. If the bore size is φ5 orφ6, and the hole length exceeds 3 times of the bore size, the class is also H8.

[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.
 ③When performing secondary operations, be aware of deflection and distortion as the tooth is thin in width.
  Please click here to Unit Price & Delivery Time.