This part of ISO 10300 specifies the fundamental formulae for use in the tooth-bending stress calculation of straight and helical (skew), zerol- and spiral-bevel gears with a minimum rim thickness under the root ≥ 3,5 mmn. All load influences on tooth stress are included, insofar as they are the result of load transmitted by the gearing and able to be evaluated quantitatively. (Stresses such as those caused by the shrink-fitting of gear rims, which are superposed on stresses due to tooth loading, are to be taken into consideration in the calculation of the tooth root stress σF or the permissible tooth root stress σFP.)
The formulae in this part of ISO 10300 are valid for bevel gears with teeth with a transverse contact ratio of εvα < 2, while the results are valid within the range of the applied factors given in ISO 10300-1 and ISO 6336-3.
This part of ISO 10300 does not apply to stress levels above those permitted for 10 cycles, as stresses in that range could exceed the elastic limit of the gear tooth.
CAUTION — The user is cautioned that when the methods are used for large spiral and pressure angles, and for large face width b > 10 mmn, the calculated results of ISO 10300 should be confirmed by experience.
ISO 10300-3:2001 history
2023ISO 10300-3:2023 Calculation of load capacity of bevel gears — Part 3: Calculation of tooth root strength
2014ISO 10300-3:2014 Calculation of load capacity of bevel gears - Part 3: Calculation of tooth root strength
2011ISO 10300-3:2011 Calculation of load capacity of bevel gears — Part 3: Calculation of tooth root strength
2001ISO 10300-3:2001 Calculation of load capacity of bevel gears - Part 3: Calculation of tooth root strength