Calculation of load capacity of spur and helical gears - Calculation of micropitting load capacity1 Scope This document describes a procedure for the calculation of the micropitting load capacity of cylindrical gears with external teeth. It has been developed on the basis of testing and observation of oil lubricated gear transmissions with modules between 3 mm and 11 mm and pitch line velocities of 8 m s to 60 m s. However, the procedure is applicable to any gear pair where suitable reference data are available, providing the criteria specified

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Why should you use ISO 18747‑2- Multi-velocity approach