Machine design tool · V0.8

Basic Rolling Bearing L10 Life Calculator

Estimate basic rolling-bearing rating life using the standard power-law relationship after you have determined an equivalent dynamic bearing load.

Rolling bearing and basic L10 life relationship

Bearing type

Dynamic load rating C (kN)

Equivalent dynamic load P (kN)

Speed n (rpm)

L10 life—

Basic rating life—

Life exponent—

L₁₀ = (C/P)ᵖ million revolutions

This is the basic rating-life relationship using an already determined equivalent dynamic load P. Real bearing selection can require radial/axial load factors, static safety, reliability adjustment, contamination, lubrication, temperature, preload, misalignment and manufacturer-specific rating methods.