Construction
Model Code
Product identification for ordering purpose.

Rating Table
| Output speed(r/min) | 5 | 10 | 15 | 20 | 25 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | Speed ratio |
Output In-lb |
Input kW |
Output In-lb |
Input kW |
Output In-lb |
Input kW |
Output In-lb |
Input kW |
Output In-lb |
Input kW |
|
Shaft |
Case |
|||||||||||
![]() |
57 | 56 | 1,692 (191) |
0.13 | 1,373 (155) |
0.22 | 1,213 (137) |
0.29 | 1,107 (125) |
0.35 | 1,045 (118) |
0.41 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 81 | 80 | |||||||||||
| 105 | 104 | |||||||||||
| 121 | 120 | |||||||||||
| 141 | 140 | |||||||||||
![]() |
57 | 56 | 4,109 (464) |
0.32 | 3,330 (376) |
0.53 | 2,949 (333) |
0.70 | 2,710 (306) |
0.85 | 2,533 (286) |
1.00 |
| 81 | 80 | |||||||||||
| 105 | 104 | |||||||||||
| 121 | 120 | |||||||||||
| 153 | 152 | |||||||||||
![]() |
57 | 56 | 7,847 (886) |
0.62 | 6,368 (719) |
1.00 | 5,642 (637) |
1.33 | 5,172 (584) |
1.63 | 4,845 (547) |
1.91 |
| 81 | 80 | |||||||||||
| 101 | 100 | |||||||||||
| 121 | 120 | |||||||||||
| 153 | 152 | |||||||||||
![]() |
81 | 80 | 19,272 (2,176) |
1.52 | 15,712 (1,774) |
2.48 | 13,887 (1,568) |
3.28 | 12,762 (1,441) |
4.02 | 11,894 (1,343) |
4.69 |
| 101 | 100 | |||||||||||
| 129 | 128 | |||||||||||
| 145 | 144 | |||||||||||
| 171 | 170 | |||||||||||
![]() |
81 | 80 | 38,624 (4,361) |
3.04 | 31,335 (3,538) |
4.94 | 27,774 (3,136) |
6.57 | 25,516 (2,881) |
8.05 | 23,160 (2,695) |
9.41 |
| 101 | 100 | |||||||||||
| 118.5 | 117.5 | |||||||||||
| 129 | 128 | |||||||||||
| 141 | 140 | |||||||||||
| 171 | 170 | |||||||||||
| 185 | 184 | |||||||||||
![]() |
81 | 80 | 54,335 (6,135) |
4.28 | 44,088 (4,978) |
6.95 | 39,058 (4,410) |
9.24 | 35,843 (4,047) |
11.3 | 33,505 (3,783) |
13.2 |
| 101 | 100 | |||||||||||
| 118.5 | 117.5 | |||||||||||
| 129 | 128 | |||||||||||
| *154.8 | 153.8 | |||||||||||
| 171 | 170 | |||||||||||
| *192.4 | 191.4 | |||||||||||
![]() |
123 | 122 | 66,398 (7,497) |
5.23 | 53,901 (6,086) |
8.50 | 47,737 (5,390) |
11.29 | 43,831 (4,949) |
13.82 | ||
| 141 | 140 | |||||||||||
| 163.5 | 162.5 | |||||||||||
| *192.4 | 191.4 | |||||||||||
■ Output speed 30-60,Tooth width,I(=GD2/4) Input inertia
| Output speed(r/min) | 30 | 40 | 50 | 60 |
Tooth mm |
I(=GD2/4) Kg-m2 |
||||
|---|---|---|---|---|---|---|---|---|---|---|
| Model | Output In-lb |
Input kW |
Output In-lb |
Input kW |
Output In-lb |
Input kW |
Output In-lb |
Input kW |
||
![]() |
992 (112) |
0.49 | 903 (102) |
0.57 | 850 (96) |
0.67 | 806 (91) |
0.76 | 8 | 0.075×10-4 |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.0488×10-4 | ||||||||||
| 0.0355×10-4 | ||||||||||
| 0.0295×10-4 | ||||||||||
| 0.0241×10-4 | ||||||||||
![]() |
2,391 (270) |
1.13 | 2,196 (248) |
1.39 | 2,055 (232) |
1.62 | 10 | 0.2323×10-4 | ||
| 0.168×10-4 | ||||||||||
| 0.128×10-4 | ||||||||||
| 0.109×10-4 | ||||||||||
| 0.0823×10-4 | ||||||||||
![]() |
4,579 (517) |
2.17 | 4,198 (474) |
2.65 | 10 | 0.7312×10-4 | ||||
| 0.513×10-4 | ||||||||||
| 0.404×10-4 | ||||||||||
| 0.328×10-4 | ||||||||||
| 0.245×10-4 | ||||||||||
![]() |
11,283 (1,274) |
5.34 | 15 | 1.963×10-4 | ||||||
| 1.505×10-4 | ||||||||||
| 1.105×10-4 | ||||||||||
| 0.903×10-4 | ||||||||||
| 0.755×10-4 | ||||||||||
![]() |
22,567 (2,548) |
10.7 | 16 | 0.523×10-3 | ||||||
| 0.400×10-3 | ||||||||||
| 0.328×10-3 | ||||||||||
| 0.295×10-3 | ||||||||||
| 0.263×10-3 | ||||||||||
| 2.005×10-4 | ||||||||||
| 1.793×10-4 | ||||||||||
![]() |
18 | 0.893×10-3 | ||||||||
| 0.695×10-3 | ||||||||||
| 0.575×10-3 | ||||||||||
| 0.518×10-3 | ||||||||||
| 0.408×10-3 | ||||||||||
| 0.358×10-3 | ||||||||||
| 0.303×10-3 | ||||||||||
![]() |
22 | 1.178×10-3 | ||||||||
| 0.994×10-3 | ||||||||||
| 0.820×10-3 | ||||||||||
| 0.655×10-3 | ||||||||||
■ Other(Allowable max.Output speed,Allowable acceleration deceleration torque etc.)
| Model | Allowable r/min |
Allowable In-lb(Nm) |
Momentary In-lb(Nm) |
Lost arc.min. |
Torsional n-lb/arc.min. |
Weight lb(kg) |
|---|---|---|---|---|---|---|
![]() |
60 | 2,427(274) | 6,076(686) | 1 | 347(39.2) | 7.7(3.5) |
![]() |
50 | 7,378(833) | 14,755(1,666) | 1 | 868(98) | 14.3(6.5) |
![]() |
40 | 14,104(1,592.5) | 28,208(3,185) | 1 | 1,736(196) | 22(10.0) |
![]() |
45 | 34,718(3,920) | 58,586(6,615) | 1 | 3,472(392) | 44.1(20.0) |
![]() |
35 | 69,436(7,840) | 108,493(12,250) | 1 | 8,679(980) | 80.5(36.5) |
![]() |
25 | 97,644(11,025) | 164,910(18,620) | 1 | 10,415(1,176) | 110.2(50.0) |
![]() |
20 | 119,343(13,475) | 238,685(26,950) | 1 | 14,755(1,666) | 156.5(71) |
- 1. Set maximum input shaft revolutions to a value equal to or lower than the value of maximum allowable output revolutions multiplied
by the above speed ratio for each type. - 2. The input capacity (kW) in the above table is determined by the efficiency of these reduction gears.
- 3. The output torque (In-lb) is so determined that the service life may be maintained constant for any output revolutions.

- 4. The rated torque is a torque at an output speed of 15 r/min, which is used as a basis for service life calculations.
(Refer to the rated service life, page 97). - 5. The
value is a value considering both gear tooth widths of reduction gear assembly and input gear.
The
value at the shaft of the input gear is not included. - 6. If a higher speed than the above allowable maximum output speed is required, contact Nabtesco for further information.
- 7. If other speed ratio than the above list is required, contact Nabtesco for further information.
- 8. These reduction gear ratios are indivisible figures. Actually, 154.8=2,013/13 and 192.4=1,347/7.
- 9. The output revolution is for forward-reverse changeover applications and not applicable for continuous rotation in a single direction.
Contact Nabtesco when using the reduction gear for continuous single-direction rotation.












