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ISO TR 15144-1 2nd Edition, September 1, 2014 Calculation of micropitting load capacity of cylindrical spur and helical gears - Part 1: Introduction and basic principles
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO/TR 15144 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 is available, providing the criteria
specified below are satisfied.
The formulae specified are applicable for driving as well as for
driven cylindrical gears with tooth profiles in accordance with the
basic rack specified in ISO 53. They are also applicable for teeth
conjugate to other basic racks where the virtual contact ratio is
less than εαn = 2,5. The results are in good agreement
with other methods for normal working pressure angles up to 25°,
reference helix angles up to 25° and in cases where pitch line
velocity is higher than 2 m/s.
This part of ISO/TR 15144 is not applicable for the assessment
of types of gear tooth surface damage other than micropitting.