The industrial ratings
for helical in-line drives are based on AGMA Class
1 service conditions. A 1.00 service factor is used when the application is free from recurrent
shock loading and is continuous but does not exceed 10 hours per day. For other operating conditions,
the application horsepower and torque requirements is computed by
multiplying the actual or specified value, by the appropriate service factor.
It is recommended that the unit selected have a capacity equal to or in
excess of this equivalent load.
| SERVICE
FACTORS FOR HELICAL IN-LINE DRIVE MODELS |
| Prime
Mover |
Duration
of Service |
Driven
Machine Load Classification |
| Uniform |
Moderate
Shock |
Heavy
Shock |
| Electric
Motor |
Occasional
1/2 Hour per day
Intermittent
3 Hours per day
Up
to 10 Hours per day
24
Hours per day |
*
*
1.00
1.25 |
*
1.00
1.25
1.50 |
1.25
1.50
1.75
2.00 |
Electric
Motor
with
Frequent
Starts
and Stops |
Occasional
1/2 Hour per day
Intermittent
3 Hours per day
Up
to 10 Hours per day
24
Hours per day |
*
1.00
1.25
1.50 |
1.00
1.25
1.50
1.75 |
1.50
1.75
2.00
2.25 |
Steam
or Gas
Turbine
Hydraulic |
Occasional
1/2 Hour per day
Intermittent
3 Hours per day
Up
to 10 Hours per day
24
Hours per day |
*
1.00
1.25
1.50 |
1.00
1.25
1.50
1.75 |
1.50
1.75
2.00
2.25 |
Multi-Cylinder
Internal
Combustion
Engine |
Occasional
1/2 Hour per day
Intermittent
3 Hours per day
Up
to 10 Hours per day
24
Hours per day |
1.00
1.25
1.50
1.75 |
1.25
1.50
1.75
2.00 |
1.75
2.00
2.25
2.50 |
Single Cylinder
Internal
Combustion
Engine |
Occasional
1/2 Hour per day
Intermittent
3 Hours per day
Up
to 10 Hours per day
24
Hours per day |
1.25
1.50
1.75
2.00 |
1.50
1.75
2.00
2.25 |
2.00
2.25
2.50
2.75 |
PRODUCTS