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

Amended by

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

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Published date

11-24-2008

Publisher

International Organization for Standardization

ISO 281:2007 introduced a life modification factor, a_ISO, 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, L_n_m = a₁a_ISOL₁₀. 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, a_ISO. L₁₀ is the basic rating life.

ISO/TR 1281-2:2008 gives supplementary background information regarding the derivation of a₁ and a_ISO.

DevelopmentNote	Together with ISO TR 1281-1 supersedes ISO TR 8646. (12/2008)
DocumentType	Technical Report
Pages	49
PublisherName	International Organization for Standardization
Status	Current
Supersedes	ISO/TR 8646:1985

Standards	Relationship
SAC GB/Z 32332.2 : 2015	Identical
NEN NPR ISO/TR 1281-2 : 2009 C1 2009	Identical
PD ISO/TR 1281-2:2008	Identical
FD ISO/TR 1281-2 : 2009 FD	Identical

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11/30210938 DC : 0	BS EN 61400-4 - WIND TURBINES - PART 4: DESIGN REQUIREMENTS FOR WIND TURBINE GEARBOXES
BS ISO 281:2007	Rolling bearings. Dynamic load ratings and rating life
DIN ISO 281:2010-10	Rolling bearings - Dynamic load ratings and rating life (ISO 281:2007)
DIN ISO 281 Beiblatt 5:2011-10	ROLLING BEARINGS - DYNAMIC LOAD RATINGS AND RATING LIFE
DIN 611:2010-05	Rolling bearings - Summary
I.S. EN 61400-4:2013	WIND TURBINES - PART 4: DESIGN REQUIREMENTS FOR WIND TURBINE GEARBOXES (IEC 61400-4:2012 (EQV))
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ISO/TR 1281-2:2008

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