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.
Status: PublishedPublication date: 2008-12
Edition: 1Number of pages: 47
Technical Committee: ISO/TC 4/SC 8 Load ratings and life
- ICS :
- 21.100.20 Rolling bearings
Buy this standard
|std 1 166|
|std 2 166||Paper|
ISO/TR 1281-2:2008Stage: 60.60
Corrigenda / AmendmentsPublished
ISO/TR 1281-2:2008/Cor 1:2009
Got a question?
Check out our FAQs
+41 22 749 08 88
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.