Bearing life is defined as the number of revolutions or operating hours at a given speed that the bearing can endure before fatigue develops on the raceway or rolling elements.

The L₁₀ life is the standard rating life where 90% of a group of identical bearings will complete or exceed before fatigue failure.

1. Select your bearing type
2. Enter the dynamic load rating (C) from bearing specifications
3. Enter the equivalent dynamic load (P) acting on the bearing
4. Specify the operating speed in RPM
5. Toggle advanced options for more precise calculations
6. View results and charts

• Load: Higher loads significantly reduce bearing life
• Speed: Higher speeds reduce life in operating hours
• Lubrication: Proper lubrication extends bearing life
• Contamination: Dirt and debris dramatically reduce life
• Alignment: Misalignment causes uneven load distribution
• Temperature: Excessive heat degrades lubricant and materials