Bearing Life Calculator

Estimate basic rating life for a radial ball bearing.

Dynamic rating C: 19500 N
Live concept view — geometry scales with the entered design condition.

Estimate basic rating life for a radial ball bearing.

Design inputs

Enter known values using the units shown. Results and the live SVG view update immediately.

PRELIMINARY RESULT

Basic rating life27.00 million rev

Estimated L₁₀ life: 310.34 hours

Basic rating life
27.00 million rev
Estimated L₁₀ life
310.34 hours

Calculation detail

Formula: L₁₀ = (C / P)³ × 10⁶ revolutions

Basic rating life is estimated using the ISO-style exponent for radial ball bearings.

FORMULA VERIFICATION

Units, scope and reference

Reference: ISO 281:2007, Rolling bearings — Dynamic load ratings and rating life.

Internal unit basis: N, rpm, million revolutions. Outputs: million revolutions, h.

Valid conditions: Positive C, P and rpm; radial ball bearing exponent p = 3.

Limitations: Basic L10 only; no aISO, lubrication, contamination or misalignment adjustment.