Home / Tools / Bearing Life Calculator
Calculator

Rolling Bearing Life L10

Calculate nominal bearing service life per ISO 281 — for ball bearings and roller bearings.

Sketch

Sketch: deep groove ball bearingFront view and longitudinal section (upper half): radial load P from above, the shaft and inner ring rotate at n; C is the dynamic load rating of the bearing from the catalogue.
Sketch: cylindrical roller bearingFront view and longitudinal section (upper half), rollers between the outer ring ribs: radial load P from above, the shaft and inner ring rotate at n; C is the dynamic load rating of the bearing from the catalogue.

Enter Bearing Data

Data from the bearing catalog and operating parameters.

From bearing catalog

kN

Axial and radial load combined

kN
min⁻¹

Formula (ISO 281)

L10 = (C/P)^p  [10⁶ revolutions]
L10h = L10 × 10⁶ / (60 × n)
C = Dynamic load rating [N or kN]
P = Equivalent load [N or kN]
p = 3 (ball bearing) | 10/3 (roller bearing)
n = Operating speed [min⁻¹]
L10 = Nom. service life [10⁶ revolutions]
L10h = Nom. service life [hours]

What Does L10 Mean?

L10 is the operating duration that 90% of a bearing series will exceed under identical conditions. Statistically, only 10% of bearings fail before reaching L10.

Note: This calculation provides the nominal L10 service life. The modified L10mh (per ISO 281 Annex 1) additionally accounts for lubrication conditions, contamination, and system parameters.

Notice: The calculation tools provided are intended for initial orientation only and do not replace binding engineering design by qualified specialists. All results must be verified by appropriate engineering calculations before use in safety-critical applications. Technische Antriebselemente GmbH accepts no liability for damages arising from the use of the calculation results.

Have the bearing selection checked against real operating conditions?

The calculated L10 is an approximation that assumes ideal lubrication and a clean installation. Send us the load, the speed and the required service life — we will check the bearing selection against your actual operating case, including lubrication, temperature and contamination.

Have the bearing checked →

Matching Products & Guides

Product

Linear Guides from TEA

Ball and roller guides with load ratings up to 264 kN — select based on the calculated service life.

 Product

Linear Systems Range

Linear actuators, guides, and screw jack gearboxes — complete linear technology from a single source.

 Pillar Page

Linear Technology Guide

Selection guides, comparison tables, and formulas for linear guides, actuators, and screw jacks.

 Comparison

Ball vs. Roller Guide

Load capacity, stiffness, and cost compared — which guidance principle lasts longer?

 Calculator

Linear Guide Sizing

Calculate load rating and static safety for linear guides.
+49 [40] 5388921-11 sales@tea-hamburg.de