| |
| Prime Mover |
Duration of Service
Hours / Day |
Service Factors |
| Nature of Load on Gear Unit from Driven Machine |
| |
|
Uniform |
ModerateShock |
Heavy ShockWorm |
Heavy ShockHelical and Spur |
| (1) |
(2) |
(3) |
(4) |
(5) |
(6) |
| Electric Motor |
2
4
8
12
24 |
0.75
0.80
.91
.001
.25 |
0.9
1.0
1.1
1.25
1.5 |
1.25
1.3
1.45
1.55
1.75 |
1.40
1.5
1.65
1.75
2.00 |
|
|
|
 |
|
|
