Calculation of load capacity of bevel gears - ISO rating system for bevel and hypoid gears. Sample calculation for scuffing load capacity

What is ISO/TR 10300‑32 about?  

The ISO 10300 series discusses ‘Calculation of load capacity of bevel gears.’

ISO/TR 10300‑32 is the 32^nd part in the multi-series of documents that is applicable to the calculation of load capacity of bevel gears.

ISO/TR 10300‑32 provides calculation examples for different bevel gear designs regarding the scuffing load capacity. The initial geometry data of the gear is necessary for these calculations.

WARNING — The user is cautioned that when the formulae are used for large average mean spiral angles, (βm1 + βm2)/2 > 45°, for effective pressure angles, αe > 30° and/or for large face widths, b > 13 mmn, the calculated results of the ISO 10300 series should be confirmed by experience.

Who is ISO/TR 10300‑32 for? 

ISO/TR 10300‑32 on the calculation of load capacity of bevel gears is relevant to: 

• Manufacturers of bevel gears
• Product design engineers
• Mechanical engineers
• Industries/applications such as automotive, marine, railway, steel and power plants

Why should you use ISO/TR 10300‑32?  

The term "bevel gear" is used to mean straight, helical (skew), spiral bevel, zerol and hypoid gear designs. By providing four sample calculations in accordance with ISO/TR 10300-20, ISO/TR 10300-32 establishes a consistent set of procedures for calculating the load capacity of bevel and hypoid gears. ISO/TR 10300-32 is designed to facilitate the application of future knowledge and developments, also the exchange of information gained from experience. Thus, compliance with ISO/TR 10300-32 can help you assess the tribological behaviour of the lubricated flank surface contact. This can ensure optimal operational efficiency of bevel gears in high load situations and long-duty cycle hours, thereby minimising risk of product failure.