scope:

This standard is applicable to enclosed epicyclic speed reducers and increasers which use spur and helical gears. It applies to non-aircraft, industrial, vehicular, or machine tool gear units with carrier speeds less than 1800 rpm and pinion absolute speed less than 4500 rpm.

Limitations

Rating methods and influences identified in this standard are applicable to enclosed drives of single and multiple stage designs, with pitch line velocities not exceeding 35 m/s.

See Clause 4 for additional information, requirements, and limitations pertaining to the design of epicyclic gear drives.

A more detailed engineering study should be undertaken if conditions or requirements extend beyond a company's traditional design and manufacturing expertise in areas such as:

- lighter weight;

- higher power;

- reduced space;

- lubricants other than specified by ANSI/AGMA 9005;

- lower speeds;

- higher torque;

- double helical gearing.