BS ISO 6336-6:2019 Calculation of load capacity of spur and helical gears Calculation of service life under variable load

Failure (mechanical)
Spur gears
Factor of safety
Life (durability)
Load capacity
Helical gears
Stress
Mechanical transmission systems
Mathematical calculations
Mechanical shock
Gear drives
Strength of materials
Design calculations

Link: BS ISO 6336-6:2019 Calculation of load capacity of spur and helical gears Calculation of service life under variable load
Source: BSI Standards