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  • BSI
    BS ISO 6336-2:2019 Calculation of load capacity of spur and helical gears - Calculation of surface durability (pitting)
    Edition: 2020
    $556.95
    / user per year

Description of BS ISO 6336-2:2019 2020

This document specifies the fundamental formulae for use in the determination of the surface load capacity of cylindrical gears with involute external or internal teeth. It includes formulae for all influences on surface durability for which quantitative assessments can be made. It applies primarily to oil‑lubricated transmissions, but can also be used to obtain approximate values for (slow‑running) grease‑lubricated transmissions, as long as sufficient lubricant is present in the mesh at all times.

The given formulae are valid for cylindrical gears with tooth profiles in accordance with the basic rack standardized in ISO 53. They can also be used for teeth conjugate to other basic racks where the actual transverse contact ratio is less than εαn = 2,5. The results are in good agreement with other methods (see References [5], [7], [10], [12]).

These formulae cannot be directly applied for the assessment of types of gear tooth surface damage such as plastic yielding, scratching, scuffing and so on, other than that described in Clause 4.

The load capacity determined by way of the permissible contact stress is called the “surface load capacity” or “surface durability”.

If this scope does not apply, refer to ISO 6336‑1:2019, Clause 4.



Standard NumberBS ISO 6336-2:2019
TitleCalculation of load capacity of spur and helical gears - Calculation of surface durability (pitting)
StatusConfirmed
Publication Date2020-12-14
ReplacesBS ISO 6336-2:2006
Identical National Standard OfISO 6336-2:2019
CorrectsBS ISO 6336-2:2019
DescriptorsFormulae (mathematics), Mathematical calculations, Design calculations, Surface defects, Stress analysis, Helical gears, Mechanical transmission systems, Load capacity, Gear drives, Lubrication, Durability, Spur gears
ICS21.200 Gears
CommitteeMCE/5
ISBN978 0 539 16356 8
PublisherBSI
Pages48



About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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