Anti-rotation for thrust washers in planetary gear system

摘要

A bushing for use in a planetary gear system has a cylindrical body portion defining a bore extending along a central axis to be received on a planetary gear shaft. A tab extends axially beyond a nominal body portion of the bushing and is received in a notch in a thrust washer adjacent to the bushing to prevent rotation of the thrust washer. A gear cage and an air turbine starter incorporating the bushing, along with a method of installing the bushing are also disclosed.

主权项

1. A gear cage comprising:
a planet gear to be incorporated into a planetary gear system for rotation about an axis; at least one bearing for supporting said planet gear; a pair of bushings mounted at opposed axial ends of said gear, each of said bushings being associated with a thrust washer, each of said thrust washers including a notch, and each of said bushings including a tab extending axially from a nominal body of said bushing, and received in said notch of said associated thrust washer to prevent rotation.