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Bearing Life Calculator — Basic L10

Estimate basic L10 bearing fatigue life in million revolutions and hours for ball or roller bearings.

Bearing Life Calculator — Basic L10

FREE ONLINE TOOL

Basic L10 life

216 10⁶ rev

Basic L10 life in hours

2,400 h

Formula and assumptions

L10 = (C/P)^p million rev; L10h = 10⁶L10/(60n); p = 3 (ball), 10/3 (roller)

Basic rating life corresponds to 90% reliability for an appropriate bearing population under the model. P must be equivalent dynamic load, not simply radial load if axial load exists. No lubrication, contamination, static-capacity or modified-life correction. Not a replacement interval or guarantee.

Technical reference: SKF — Bearing life statistics

STEP BY STEP

How to use bearing life calculator — basic l10

  1. Check the input units and assumptions.
  2. Review the result and example.

IN PRACTICE

Example

Ball bearing: C = 30 kN, P = 5 kN, n = 1500 RPM → L10 = 216 million rev; L10h = 2400 h.

GOOD TO KNOW

Which model does this calculator use?

Basic rating life corresponds to 90% reliability for an appropriate bearing population under the model. P must be equivalent dynamic load, not simply radial load if axial load exists. No lubrication, contamination, static-capacity or modified-life correction. Not a replacement interval or guarantee.

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