What is ISO 6336-6 - Calculation of service life of spur and helical gears about?
The formulae in the ISO 6336 series are intended to establish a uniformly acceptable method for calculating the load capacity of cylindrical gears with straight or helical involute teeth.
ISO 6336-6 is the sixth part of the multi-series that is applicable to the calculation of load capacity of spur and helical gears. It details best practices to minimize fatigue failure and prolong service-life of spur and helical gears.
ISO 6336-6 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.
Who is ISO 6336-6 - Calculation of service life of spur and helical gears for?
ISO 6336-6 on the calculation of service life of spur and helical gears is relevant to:
- Manufacturers and suppliers of spur and helical gears
- Product design engineers
- Mechanical engineers
- Industries/applications such as automotive, marine, railway, steel, and power plants
Why should you use ISO 6336-6 - Calculation of service life of spur and helical gears?
Helical gears are becoming more popular as power transmission gears, not only because they can bear bigger loads due to their reduced dynamic load, but also because their noise and vibration levels are lower in operation than spur gears.
The calculation methods provided constitute empirical means for comparing stresses in gears of different dimensions with experimental results. According to ISO 6336-6, the calculated service life is based on the idea that every load cycle (per revolution) is harmful to the gear. The amount of damage is dependent on the level of stress, and it can be zero at the lowest stress levels. Gear's predicted bending or pitting fatigue life is a measure of its ability to accumulate discrete damage before failure.
As a result, ISO 6336-6 aids in the accurate and precise calculations of service life that can help you manufacture spur and helical gears as per the need of the end-application to meet its load bearing capacity requirements, for optimal operational efficiency. Enhanced service-life of gears can ultimately help avoid fatigue failure and disruptions to the overall system.
What’s changed since the last update?
BS ISO 6336-6:2019 supersedes BS ISO 6336-6:2006, which is withdrawn. BS ISO 6336-6:2019 includes some technical changes with respect to BS ISO 6336-6:2006. These include:
- In Annex A, examples have been revised
- Integration of Annex B "Equivalent cumulative damage"