Bearing life calculator
Enter load ratings + equivalent load → nominal life (rev/hours) + static safety.
How to use
- Enter the calculation conditions
Enter the dimensions, loads, speeds or operating conditions requested by the form.
- Run the calculation
The tool applies the formulas shown on this page to the entered values.
- Review the result
Review the resulting specification and checks, then verify them against the cited source, current standard and real operating conditions before use.
Core formula
L10 = (C / (fw · P))³ × 10⁶
Example using default values
L10 = (25,000 / (1.2 · 3,000))³ × 10⁶ = 334.9 × 10⁶ rev
Source: ISO 281; NSK / NTN / SKF bearing-life references.
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