[Spiral Miter Gears (SMS)] Series list   
diagram
Specifications
Precision grade JIS B 1704:1978 grade 4 Surface hardness HRC50 - 60
Gear teeth Gleason Surface treatment Black oxide
Pressure angle 20° Surface finish Cut
Helix angle 35° Datum reference surface for teeth cutting Bore
Material S45C Modifications Possible
Heat treatment Tooth surfaces induction hardened    
  1 / 1 Page      54 items in total    Module   No. of Teeth       
< 1 >    precaution    
Catalog No.
Module
Number of Teeth
Hand of thread Shape Bore
A
Hub dia.
B
Pitch dia.
C
Outside dia.
D
Mounting distance
E
Total length
F
Crown to back length
G
Hub width
H
Length of bore
I
Face width
J
Holding surface dia.
K
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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  SMS1-20R 
  SMS1-20L 
  SMS1.5-20R 
  SMS1.5-20L 
  SMS2-20R 
  SMS2-20L 
  SMS2.5-20R 
  SMS2.5-20L 
  SMS3-20R 
  SMS3-20L 
  SMS3.5-20R 
  SMS3.5-20L 
  SMS4-20R 
  SMS4-20L 
  SMS5-20R 
  SMS5-20L 
  SMS6-20R 
  SMS6-20L 
  SMS8-20R 
  SMS8-20L 
  SMS1-25R 
  SMS1-25L 
  SMS1.5-25R 
  SMS1.5-25L 
  SMS2-25R 
  SMS2-25L 
  SMS2.5-25R 
  SMS2.5-25L 
  SMS3-25R 
  SMS3-25L 
  SMS3.5-25R 
  SMS3.5-25L 
  SMS4-25R 
  SMS4-25L 
  SMS5-25R 
  SMS5-25L 
  SMS6-25R 
  SMS6-25L 
  SMS1-30R 
  SMS1-30L 
  SMS1.5-30R 
  SMS1.5-30L 
  SMS2-30R 
  SMS2-30L 
  SMS2.5-30R 
  SMS2.5-30L 
  SMS3-30R 
  SMS3-30L 
  SMS3.5-30R 
  SMS3.5-30L 
  SMS4-30R 
  SMS4-30L 
  SMS5-30R 
  SMS5-30L 
120RB36162021.32013.8410.6581259.860.110.0670.030.130.019 SMS1-20L
120LB36162021.32013.8410.6581259.860.110.0670.030.130.019 SMS1-20R
1.520RB38263031.743021.1815.871319815.370.380.240.050.150.074 SMS1.5-20L
1.520LB38263031.743021.1815.871319815.370.380.240.050.150.074 SMS1.5-20R
220RB312344042.43724.7518.214221021.720.870.550.060.160.15 SMS2-20L
220LB312344042.43724.7518.214221021.720.870.550.060.160.15 SMS2-20R
2.520RB314425052.944832.4224.4719291228.061.661.070.070.170.30 SMS2.5-20L
2.520LB314425052.944832.4224.4719291228.061.661.070.070.170.30 SMS2.5-20R
320RB316506063.725839.629.8623351531.572.941.910.080.180.52 SMS3-20L
320LB316506063.725839.629.8623351531.572.941.910.080.180.52 SMS3-20R
3.520RB320607074.476543.8132.2325401839.094.743.100.100.250.82 SMS3.5-20L
3.520LB320607074.476543.8132.2325401839.094.743.100.100.250.82 SMS3.5-20R
420RB320648084.887550.5137.4427452043.436.974.590.120.271.15 SMS4-20L
420LB320648084.887550.5137.4427452043.436.974.590.120.271.15 SMS4-20R
520RB32580100105.99060.1642.9530542654.4613.99.270.140.342.13 SMS5-20L
520LB32580100105.99060.1642.9530542654.4613.99.270.140.342.13 SMS5-20R
620RB328100120127.1610467.3547.5834603067.1523.015.80.160.363.65 SMS6-20L
620LB328100120127.1610467.3547.5834603067.1523.015.80.160.363.65 SMS6-20R
820RB330130160169.9412572.649.973062359549.435.10.200.457.00 SMS8-20L
820LB330130160169.9412572.649.973062359549.435.10.200.457.00 SMS8-20R
125RB36202526.222315.0811.11814615.030.170.130.030.130.035 SMS1-25L
125LB36202526.222315.0811.11814615.030.170.130.030.130.035 SMS1-25R
1.525RB3103037.539.313422.1416.1611.519919.540.590.450.050.150.11 SMS1.5-25L
1.525LB3103037.539.313422.1416.1611.519919.540.590.450.050.150.11 SMS1.5-25R
225RB312405052.384024.216.1910201226.061.401.090.060.160.21 SMS2-25L
225LB312405052.384024.216.1910201226.061.401.090.060.160.21 SMS2-25R
2.525RB3165062.565.545030.2420.2712.5261534.572.732.150.070.170.42 SMS2.5-25L
2.525LB3165062.565.545030.2420.2712.5261534.572.732.150.070.170.42 SMS2.5-25R
325RB320607578.776037.5724.3915322037.435.003.980.080.180.74 SMS3-25L
325LB320607578.776037.5724.3915322037.435.003.980.080.180.74 SMS3-25R
3.525RB3257087.591.817042.9828.4117.5372246.777.696.180.100.251.14 SMS3.5-25L
3.525LB3257087.591.817042.9828.4117.5372246.777.696.180.100.251.14 SMS3.5-25R
425RB32880100104.78049.1432.3520432555.2911.59.250.120.271.71 SMS4-25L
425LB32880100104.78049.1432.3520432555.2911.59.250.120.271.71 SMS4-25R
525RB328100125130.8610060.5940.4325503065.1521.817.80.140.343.39 SMS5-25L
525LB328100125130.8610060.5940.4325503065.1521.817.80.140.343.39 SMS5-25R
625RB328120150157.1712071.9748.583061358336.430.60.160.365.99 SMS6-25L
625LB328120150157.1712071.9748.583061358336.430.60.160.365.99 SMS6-25R
130RB38243031.262817.6113.631016619.030.230.210.030.130.057 SMS1-30L
130LB38243031.262817.6113.631016619.030.230.210.030.130.057 SMS1-30R
1.530RB310364546.844328.1121.4216251025.720.840.760.050.150.21 SMS1.5-30L
1.530LB310364546.844328.1121.4216251025.720.840.760.050.150.21 SMS1.5-30R
230RB312456062.425029.2721.2112.5251236.061.861.720.060.160.37 SMS2-30L
230LB312456062.425029.2721.2112.5251236.061.861.720.060.160.37 SMS2-30R
2.530RB316607578.046236.0826.0217321547.573.633.400.070.170.76 SMS2.5-30L
2.530LB316607578.046236.0826.0217321547.573.633.400.070.170.76 SMS2.5-30R
330RB320709093.617545.2531.820402053.436.716.350.080.181.32 SMS3-30L
330LB320709093.617545.2531.820402053.436.716.350.080.181.32 SMS3-30R
3.530RB32590105109.218549.434.625452267.7710.39.790.100.252.19 SMS3.5-30L
3.530LB32590105109.218549.434.625452267.7710.39.790.100.252.19 SMS3.5-30R
430RB328100120124.719554.2837.3525502579.2915.314.70.120.273.07 SMS4-30L
430LB328100120124.719554.2837.3525502579.2915.314.70.120.273.07 SMS4-30R
530RB328130150155.8912068.247.9535623099.152928.10.140.346.44 SMS5-30L
530LB328130150155.8912068.247.9535623099.152928.10.140.346.44 SMS5-30R
Product Precautions
[Caution on Product Characteristics]  ①A sets of miter gears must be identical in module and number of teeth, but opposite in spiral hands.
 ②The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see precaution for more details.
 ③Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the corner chamfering of the gear tips.
 ④These gears produce axial thrust forces. See precaution for more details.
 ⑤Due to heat treating, some deformation of the bore may occur. It may be necessary to ream the bore to bring it to the stated dimensions.

[Caution on Secondary Operations]  ①Please read “Cautions on Performing Secondary Operations”when performing modification and/or secondary operations of Miter Gears. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.
 ②Due to gear teeth induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 2 to 3 mm).
  Please click here to Unit Price & Delivery Time.