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Bearing L10 Life

Catalogue bearing life in hours — the point by which 10% of identical bearings would be expected to fail.

No sign-upRuns offline in your browserFormula shown
N
Shared across two bearings — the tool halves it.
N
—
From the bearing catalogue.
—
From the bearing catalogue.
kN
rpm

Result

Fill in the fields — the result appears as you type.

Method & assumptions
Pe = X·(Fr÷2) + Y·Fa L10h = (C ÷ Pe)n · 10⁶ ÷ (60·N)

ISO 281 basic rating life. The radial load is halved for a two-bearing shaft. Life scales steeply with the C/P ratio — halving the load multiplies life by 8 on a ball bearing.

Engineering aid only — verify results against the applicable code edition and the equipment datasheet before committing to a design.

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