---
title: "Bearing Lifespan Calculator | Free Online L10 Life Estimation"
date: 2026-05-20
description: "Bearing L10 Life Calculator Calculate bearing L10 fatigue life based on ISO 281:2007. Input basic load ratings, speeds, and application factors — get estimated ..."
source: https://en.mshjzc.com/online-tool/56020.html
---

# Bearing Lifespan Calculator | Free Online L10 Life Estimation

<div class="bearing-calc-wrapper"><div class="calc-header">### Bearing L10 Life Calculator

Calculate bearing L10 fatigue life based on ISO 281:2007. Input basic load ratings, speeds, and application factors — get estimated service hours instantly.

 </div><div class="calc-body"><div class="layui-form" lay-filter="calcForm"><div class="layui-form-item"> <label class="layui-form-label">Bearing Type</label><div class="layui-input-inline" style="width:200px;"> <select id="bearing_type" lay-filter="bearing_type" lay-vertype="tips"> <option value="ball">Ball Bearing (p=3)</option> <option value="roller">Roller Bearing (p=10/3)</option> </select> </div> </div><div class="layui-form-item"> <label class="layui-form-label">Rated Load (C) kN</label><div class="layui-input-inline" style="width:200px;"> <input class="layui-input" id="rated_load" min="0.1" placeholder="e.g. 35.1" step="0.1" type="number"></input> </div><div class="layui-form-mid unit-text">Basic dynamic load rating from bearing catalog</div> </div><div class="layui-form-item"> <label class="layui-form-label">Equivalent Load (P) kN</label><div class="layui-input-inline" style="width:200px;"> <input class="layui-input" id="equiv_load" min="0.1" placeholder="e.g. 12.5" step="0.1" type="number"></input> </div><div class="layui-form-mid unit-text">Actual load applied to bearing</div> </div><div class="layui-form-item"> <label class="layui-form-label">Speed (n) RPM</label><div class="layui-input-inline" style="width:200px;"> <input class="layui-input" id="speed" min="1" placeholder="e.g. 3000" step="1" type="number"></input> </div><div class="layui-form-mid unit-text">Rotational speed of the bearing shaft</div> </div><div class="layui-form-item"><div class="layui-input-block"> <button class="layui-btn layui-btn-normal" id="calcBtn" type="button">Calculate L10 Life</button> <button class="layui-btn layui-btn-primary" id="calcReset" type="button">Reset</button> </div> </div> </div> </div><div class="calc-result" id="result"></div><div class="formula-note">**Formula:** L10 = (C/P)<sup>p</sup> × 10<sup>6</sup> / (60 × n)

**Parameters:** C = Basic dynamic load rating (kN) | P = Equivalent dynamic load (kN) | n = Speed (RPM)

**Exponent:** p = 3 for ball bearings | p = 10/3 (≈3.33) for roller bearings

**Standard:** ISO 281:2007

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