6 reference tools
Bearing Calculators: L10 Life, Loads & Static Safety
Calculate bearing L10 life, equivalent dynamic and static loads, required dynamic rating, static safety factor, and variable-duty equivalent load.
Should you calculate bearing load, life, or static safety?
Derive equivalent dynamic load P before calculating basic L10 life or the dynamic rating C needed for a target life. Use the variable-duty tool when load and speed change in discrete repeating segments. Static loading follows a separate path: derive P₀, then compare it with C₀. Obtain ratings and load factors from the exact bearing manufacturer data; basic life is not an actual service-life guarantee.
Choose a calculator
- #014
Bearing L10 Basic Rating Life Calculator
Calculate ISO 281 bearing L10 basic rating life in millions of revolutions, total revolutions, hours, days, or years from C, P, speed, and bearing type.
- #015
Bearing Equivalent Dynamic Load Calculator
Calculate radial-bearing equivalent dynamic load P from radial load Fr, axial load Fa, and manufacturer-supplied X and Y catalog factors.
- #016
Bearing Static Safety Factor Calculator
Calculate rolling-bearing static safety factor s₀, rating utilization, required C₀, and margin from verified basic static rating C₀ and equivalent static load P₀.
- #017
Bearing Equivalent Static Load Calculator
Calculate radial-bearing equivalent static load P₀ from paired maximum Fr and Fa loads, verified X₀ and Y₀ factors, and the applicable radial-floor rule.
- #018
Bearing Required Dynamic Load Rating Calculator
Calculate the minimum bearing basic dynamic load rating C required for a target ISO 281 L10 life from equivalent dynamic load P, speed, and bearing type.
- #019
Bearing Variable Duty Equivalent Dynamic Load Calculator
Calculate equivalent dynamic bearing load P_eq and mean RPM for a repeating variable-load, variable-speed duty cycle with up to four operating segments.
Before you use the result
- Use radial and axial loads with product-specific X and Y factors to obtain P. Do not replace the catalog relationship with a vector resultant.
- For a life calculation, enter the correct ball or roller bearing type, verified rating C, equivalent load P, and operating speed.
- Check static safety, speed limits, lubrication, contamination, mounting, and application conditions separately before selecting a bearing.
Each linked tool includes its own formulas, worked examples, input units, limitations, and source notes. See how MechClarity documents and checks its calculations.
Continue with related calculations
- Shaft Calculators: Stress, Deflection & Critical Speed — Calculate shaft torsion, diameter, bending stress, bearing reactions, deflection, critical speed, key stress, and rigid flange coupling loads.
- Gear Calculators: Ratio, Module, Dimensions & Forces — Calculate gear ratio, module and diametral pitch, spur gear dimensions, center distance, mesh forces, backlash, and simple planetary speeds.
- Belt & Pulley Calculators: Length, Speed & Ratio — Calculate V-belt datum length, timing-belt pitch length and tooth count, pulley speed ratio, belt speed, or pulley RPM with explicit diameter conventions.