| Symbol | KA |
|---|---|
| Unit | - |
| Attribute-ID | application factor |
| Numeric ID | 2814 |
| Value Type | PMDouble |
The application factor KA considers external forces that are transferred into the gear unit. It is required to calculate the safeties against fatigue damage due to constantly present additional dynamic loads. These additional forces are dependent on the characteristics of the driving and driven machines, the masses and stiffnesses in the drivetrain and output chain, and the operating conditions.
KA should ideally be determined by accurate measurement of the load spectrum or by a comprehensive system analysis based on verified operational experience. The table provides a rough indication of KA values at different loads. It is not a substitute for the methods for determining the application factor listed above.
| Operating characteristics of the driving machine | Operating characteristics of the driven machine | |||
Even |
Even | Light shocks | Average shocks | Strong shocks |
| 1.00 | 1.25 | 1.50 | 1.75 | |
| Light shocks | 1.10 | 1.35 | 1.60 | 1.85 |
| Average shocks | 1.25 | 1.50 | 1.75 | 2.00 |
| Strong shocks | 1.50 | 1.75 | 2.00 | ≥2.25 |
ISO 6336 and DIN 3990 part 41 include additional information and sample values related to the application factor.