®What Is Gearbox Service Factor?
Service factor is a selection margin used to account for duty severity beyond nominal power and torque. It should be considered with operating hours, starts, shock load and driven-machine behavior.
What changes the required service factor?
- Daily operating hours
- Number of starts and stops
- Smooth, moderate or shock-loaded duty
- Driven-machine inertia
- Reversing or cyclic operation
- Ambient and process conditions
Selection mistake to avoid
Do not choose a gearbox because its nominal torque barely equals the calculated load. The selection should reflect the actual duty and required margin.
How this applies to R, F, K and S gear units
The same engineering principle applies across the CHINFAR four-series platform, but the mechanical layout changes: R is inline/near-inline, F is parallel-shaft, and K/S are right-angle families. Use the principle to define the requirement, then select a configuration within the appropriate family.
Related product families
- R Series Helical Gear Unit
- F Series Parallel Shaft Helical Gear Unit
- K Series Helical-Bevel Gear Unit
- S Series Helical-Worm Gear Unit
Related products & technical resources
Need a gearbox configuration for your machine?
Send the required motor power, input speed, target output speed or ratio, expected output torque, mounting arrangement, and any installation drawing available. CHINFAR can use these inputs to narrow the R/F/K/S configuration before final engineering confirmation.
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