Lifetime Calculations
Lifetime Calculations |
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The following lifetime calculations are used for Ball Screws and Linear Actuators including the screw and bearing lifetime.
| Symbol | Description | Units |
|---|---|---|
| Cm | Mean load force | N |
| Ci | Force step | N |
| Fp | Preload force | N |
| Ca | Dynamic load rating | N |
| ab | Bearing axial load factor (only for bearing lifetime calculation) |
1 |
| di | Distance step | m |
| dT | Total travel distance in a cycle | m |
| tc | Cycle time | s |
| Ld | Lifetime (distance) | m |
| Lc | Lifetime (cycles) | 1 |
| Lh | Lifetime | h |