Bearing Life (L10) Calculator
Static · formula-only · worked example computed when this page was built · no live data
The Bearing Life (L10) Calculator estimates rated fatigue life in hours from the bearing's dynamic capacity, load, and speed. Example: for a ball bearing (C = 50 kN) at 1500 rpm under a 5 kN radial + 1 kN axial load, L10 life = 11111 h, Dynamic equivalent load = 5 kN, C/P ratio = 10 (per ISO 281:2007).
How it works
Computed from your inputs per ISO 281:2007. Anything the worked example does not state uses this calculator's standard default; the interactive version shows every input and lets you change it.
Worked example (Mechanical & Machine Design)
Inputs: a ball bearing (C = 50 kN) at 1500 rpm under a 5 kN radial + 1 kN axial load.
| Result | Value |
|---|---|
| L10 life | 11111 h |
| Dynamic equivalent load | 5 kN |
| C/P ratio | 10 |
Computed by WorkHive's calculation engine when this page was built; standard: ISO 281:2007.
How to use this calculator
- Read the worked example. It uses a ball bearing (C = 50 kN) at 1500 rpm under a 5 kN radial + 1 kN axial load and shows every number in the method.
- Follow the formula with your own figures: it returns L10 life, Dynamic equivalent load, C/P ratio, computed per ISO 281:2007.
- To compute interactively, open the Bearing Life (L10) Calculator inside WorkHive's free Engineering Design suite (link below). It runs the same method with your inputs.
FAQ
What is a bearing L10 life calculator ISO 281?
The Bearing Life (L10) Calculator is a free online tool that estimates rated fatigue life in hours from the bearing's dynamic capacity, load, and speed. It shows the formula and a fully worked example so you can check the method, not just the number.
How is it calculated?
The result is computed from your inputs following ISO 281:2007. The worked example on this page shows a real computation with real numbers.
Is the calculator free?
Yes. WorkHive is free: this worked example is open to everyone, and the interactive calculator runs inside the free Engineering Design suite after a free sign-up (your work is saved to your account). WorkHive is a free, offline-first maintenance platform built for Philippine industrial plants.
Run it on your own numbers
Open the interactive Bearing Life (L10) Calculator in WorkHive. Free, and a free sign-up saves your calculations, BOMs and scope-of-works to your account.