[Steel, Hubless Spur Gears (SSA)] 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 Bore (H7)
Heat treatment - Modifications Possible
(*1) Old JIS B 1702 grade 4
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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
Web thickness
H
Rim O.D.
I
Key width Key depth Allowable torque(kgf·m)
Bending strength
Allowable torque(kgf·m)
Surface durability
Backlash low
(mm)
Backlash up
(mm)
Weight
(kg)
Unit Price
Click Here
Prices of J Series Products
1-4
Prices of J Series Products
5-10
Prices of J Series Products
11-20
  SSA1-20 
 SSA1-20J8 
  SSA1-24 
 SSA1-24J8 
 SSA1-24J10 
  SSA1-25 
 SSA1-25J8 
 SSA1-25J10 
  SSA1-28 
 SSA1-28J8 
 SSA1-28J10 
 SSA1-28J12 
  SSA1-30 
 SSA1-30J8 
 SSA1-30J10 
 SSA1-30J12 
  SSA1-32 
 SSA1-32J8 
 SSA1-32J10 
 SSA1-32J12 
 SSA1-32J14 
  SSA1-35 
 SSA1-35J8 
 SSA1-35J10 
 SSA1-35J12 
 SSA1-35J14 
 SSA1-35J15 
 SSA1-35J16 
  SSA1-36 
 SSA1-36J8 
 SSA1-36J10 
 SSA1-36J12 
 SSA1-36J14 
 SSA1-36J15 
 SSA1-36J16 
  SSA1-40 
 SSA1-40J8 
 SSA1-40J10 
 SSA1-40J12 
 SSA1-40J14 
 SSA1-40J15 
 SSA1-40J16 
 SSA1-40J17 
 SSA1-40J18 
  SSA1-45 
 SSA1-45J8 
 SSA1-45J10 
 SSA1-45J12 
 SSA1-45J14 
 SSA1-45J15 
 SSA1-45J16 
 SSA1-45J17 
 SSA1-45J18 
 SSA1-45J19 
 SSA1-45J20 
  SSA1-48 
 SSA1-48J8 
 SSA1-48J10 
 SSA1-48J12 
 SSA1-48J14 
 SSA1-48J15 
 SSA1-48J16 
 SSA1-48J17 
 SSA1-48J18 
 SSA1-48J19 
 SSA1-48J20 
 SSA1-48J22 
  SSA1-50 
 SSA1-50J10 
 SSA1-50J12 
 SSA1-50J14 
 SSA1-50J15 
 SSA1-50J16 
 SSA1-50J17 
 SSA1-50J18 
 SSA1-50J19 
 SSA1-50J20 
 SSA1-50J22 
  SSA1-55 
 SSA1-55J10 
 SSA1-55J12 
 SSA1-55J14 
 SSA1-55J15 
 SSA1-55J16 
 SSA1-55J17 
 SSA1-55J18 
 SSA1-55J19 
 SSA1-55J20 
 SSA1-55J22 
 SSA1-55J25 
  SSA1-56 
 SSA1-56J10 
 SSA1-56J12 
 SSA1-56J14 
 SSA1-56J15 
 SSA1-56J16 
 SSA1-56J17 
 SSA1-56J18 
 SSA1-56J19 
 SSA1-56J20 
120S58 202210    0.590.0330.080.180.021    
120S5K8 202210  31.40.590.0330.080.180.021    
124S58 242610    0.760.050.080.180.032    
124S5K8 242610  31.40.760.050.080.180.032    
124S5K10 242610  41.80.760.050.080.180.029    
125S58 252710    0.810.0550.080.180.035    
125S5K8 252710  31.40.810.0550.080.180.035    
125S5K10 252710  41.80.810.0550.080.180.032    
128S58 283010    0.940.0700.080.180.044    
128S5K8 283010  31.40.940.0700.080.180.044    
128S5K10 283010  41.80.940.0700.080.180.042    
128S5K12 283010  41.80.940.0700.080.180.039    
130S58 303210    1.030.0810.080.180.052    
130S5K8 303210  31.41.030.0810.080.180.052    
130S5K10 303210  41.81.030.0810.080.180.049    
130S5K12 303210  41.81.030.0810.080.180.046    
132S58 323410    1.130.0920.080.180.059    
132S5K8 323410  31.41.130.0920.080.180.059    
132S5K10 323410  41.81.130.0920.080.180.056    
132S5K12 323410  41.81.130.0920.080.180.054    
132S5K14 323410  52.31.130.0920.080.180.050    
135S58 353710    1.270.110.080.180.072    
135S5K8 353710  31.41.270.110.080.180.072    
135S5K10 353710  41.81.270.110.080.180.069    
135S5K12 353710  41.81.270.110.080.180.066    
135S5K14 353710  52.31.270.110.080.180.063    
135S5K15 353710  52.31.270.110.080.180.061    
135S5K16 353710  52.31.270.110.080.180.059    
136S58 363810    1.310.120.080.180.076    
136S5K8 363810  31.41.310.120.080.180.076    
136S5K10 363810  41.81.310.120.080.180.073    
136S5K12 363810  41.81.310.120.080.180.071    
136S5K14 363810  52.31.310.120.080.180.067    
136S5K15 363810  52.31.310.120.080.180.065    
136S5K16 363810  52.31.310.120.080.180.063    
140S58 404210    1.500.150.080.180.095    
140S5K8 404210  31.41.500.150.080.180.095    
140S5K10 404210  41.81.500.150.080.180.092    
140S5K12 404210  41.81.500.150.080.180.089    
140S5K14 404210  52.31.500.150.080.180.086    
140S5K15 404210  52.31.500.150.080.180.084    
140S5K16 404210  52.31.500.150.080.180.082    
140S5K17 404210  52.31.500.150.080.180.080    
140S5K18 404210  62.81.500.150.080.180.078    
145S58 454710    1.740.190.080.180.12    
145S5K8 454710  31.41.740.190.080.180.12    
145S5K10 454710  41.81.740.190.080.180.12    
145S5K12 454710  41.81.740.190.080.180.12    
145S5K14 454710  52.31.740.190.080.180.11    
145S5K15 454710  52.31.740.190.080.180.11    
145S5K16 454710  52.31.740.190.080.180.11    
145S5K17 454710  52.31.740.190.080.180.11    
145S5K18 454710  62.81.740.190.080.180.10    
145S5K19 454710  62.81.740.190.080.180.10    
145S5K20 454710  62.81.740.190.080.180.099    
148S58 485010    1.890.220.080.180.14    
148S5K8 485010  31.41.890.220.080.180.14    
148S5K10 485010  41.81.890.220.080.180.14    
148S5K12 485010  41.81.890.220.080.180.13    
148S5K14 485010  52.31.890.220.080.180.13    
148S5K15 485010  52.31.890.220.080.180.13    
148S5K16 485010  52.31.890.220.080.180.13    
148S5K17 485010  52.31.890.220.080.180.12    
148S5K18 485010  62.81.890.220.080.180.12    
148S5K19 485010  62.81.890.220.080.180.12    
148S5K20 485010  62.81.890.220.080.180.12    
148S5K22 485010  62.81.890.220.080.180.11    
150S510 505210    1.980.240.080.180.15    
150S5K10 505210  41.81.980.240.080.180.15    
150S5K12 505210  41.81.980.240.080.180.14    
150S5K14 505210  52.31.980.240.080.180.14    
150S5K15 505210  52.31.980.240.080.180.14    
150S5K16 505210  52.31.980.240.080.180.14    
150S5K17 505210  52.31.980.240.080.180.14    
150S5K18 505210  62.81.980.240.080.180.13    
150S5K19 505210  62.81.980.240.080.180.13    
150S5K20 505210  62.81.980.240.080.180.13    
150S5K22 505210  62.81.980.240.080.180.12    
155S510 555710    2.230.290.080.180.18    
155S5K10 555710  41.82.230.290.080.180.18    
155S5K12 555710  41.82.230.290.080.180.18    
155S5K14 555710  52.32.230.290.080.180.17    
155S5K15 555710  52.32.230.290.080.180.17    
155S5K16 555710  52.32.230.290.080.180.17    
155S5K17 555710  52.32.230.290.080.180.17    
155S5K18 555710  62.82.230.290.080.180.17    
155S5K19 555710  62.82.230.290.080.180.16    
155S5K20 555710  62.82.230.290.080.180.16    
155S5K22 555710  62.82.230.290.080.180.16    
155S5K25 555710  83.32.230.290.080.180.15    
156S510 565810    2.280.30.080.180.19    
156S5K10 565810  41.82.280.30.080.180.19    
156S5K12 565810  41.82.280.30.080.180.18    
156S5K14 565810  52.32.280.30.080.180.18    
156S5K15 565810  52.32.280.30.080.180.18    
156S5K16 565810  52.32.280.30.080.180.18    
156S5K17 565810  52.32.280.30.080.180.17    
156S5K18 565810  62.82.280.30.080.180.17    
156S5K19 565810  62.82.280.30.080.180.17    
156S5K20 565810  62.82.280.30.080.180.17    
Product Precautions
[Precaution on J Series Products]  ①Since J series are available-on-request products, it requires a lead-time within 2 working-days (excludes the day ordered), after placing an order. Number of products we can handle for one order is 1 to 20 units. In case of ordering products over 20 units, we shall submit a quote.
 ②Keyways are made according to JIS B1301 standards and Js 9 tolerance. Areas of those products which have been re-worked are not black oxide coated.

[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 backlash in the normal direction of a pair of identical gears in mesh.

[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.