Calculation of load capacity of spur and helical gears —
Calculation of service life under variable load
SCOPE: This document specifies the information and standardized conditions necessary for the calculation of the service life (or safety factors for a required life) of gears subject to variable loading for only pitting and tooth root bending strength.
If this scope does not apply, refer ISO 6336-1:2019, Clause 4.
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This document was prepared by Technical Committee ISO/TC 60, Gears, Subcommittee SC 2, Gear capacity calculation.
This second edition cancels and replaces the first edition (ISO 6336-6:2006), which has been technically revised. It also incorporates the Technical Corrigendum ISO 6336-6:2006/Cor.1:2007.
The main changes compared to the previous edition are as follows:
- in Annex A, examples have been revised;
- integration of Annex B "Equivalent cumulative damage".
A list of all parts in the ISO 6336 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.