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Ball Nut Life Calculator

The calculator derives the expected life in inches of travel (Inch Calculator), or the expected number of revolutions (Metric Calculator) of a ball nut operating at a load which is different than the rated dynamic load.

in

Divide Ball Nut Life by the following Fatigue Factor (f).

Operation Conditionf
No External Vibration1.0 – 1.2
Indirect Vibration1.2 – 1.5
Direct Vibration OR High Cyclical Impact1.5 – 2.5
Direct Vibration AND High Cyclical Impact2.5 – 3.5

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