BearingSolve engineering guides
Bearing calculation equations, explained
Understand the methods behind rolling-bearing calculations. Each guide connects the equations to a worked example, practical limitations, and the BearingSolve calculator.
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01ISO 281Bearing life calculation
Calculate basic L10 bearing life in revolutions and operating hours, understand the life exponent, and see where modified rating life is needed.
02ISO 281Equivalent dynamic load
Combine radial and axial loads into the equivalent dynamic load used by the ISO 281 rating-life equation.
03ISO 76Static load rating
Use the basic static load rating, equivalent static load, and static safety factor to assess permanent-deformation risk.
04Hertz theoryHertzian contact stress
Understand effective material and curvature properties, contact-patch size, and maximum Hertz pressure in rolling contacts.
05ISO 16281:2025Internal load distribution
Learn how clearance, misalignment, ring displacement, and nonlinear rolling-element stiffness affect the load distribution used in ISO 16281 calculations.
From theory to a result
Use the guides with BearingSolve
- UnderstandReview the equation, variables, and assumptions.
- PrepareCollect geometry, material, load, and lubrication data.
- CalculateRun the complete bearing model and inspect the results.