ISO/TR 1281-2:2008

Rolling bearings — Explanatory notes on ISO 281 — Part 2: Modified rating life calculation, based on a systems approach to fatigue stresses

Publication date: Nov 24, 2008

General information

Current stage: 60.60 Effective date: Nov 24, 2008

Originator: ISO

Owner: ISO/TC 4/SC 8

Type: Technical Report

ICS: 21.100.20

Languages: English French

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Status: Published

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Scope

ISO 281:2007 introduced a life modification factor, aISO, based on a systems approach to life calculation, in addition to the life modification factor, a1.These factors are applied in the modified rating life equation, Lnm = a1aISOL10. The modification factor for reliability, a1, for a range of reliability values, is given in ISO 281:2007 as well as the method for evaluating the modification factor for systems approach, aISO. L10 is the basic rating life.
ISO/TR 1281-2:2008 gives supplementary background information regarding the derivation of a1 and aISO.

Life cycle

PREVIOUSLY

Revises
ISO/TR 8646:1985

NOW

PUBLISHED
ISO/TR 1281-2:2008
60.60 Standard published
Nov 24, 2008

CORRIGENDA / AMENDMENTS

Corrected by
ISO/TR 1281-2:2008/Cor 1:2009

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