Caterpillar Inc.
Track Pin and Bushing Retention Design for a Track Chain

Abstract:

A track chain member may comprise a shoe member, and a first rail member extending from the shoe member. The first rail member may include a first lug defining a first bore defining a first longitudinal axis and including a first bushing retention shelf disposed in the first bore, a second lug including a second bushing retention shelf disposed in the second bore. A third lug may extend in a direction opposite that of the first lug and second lug and may be disposed axially between the first lug and the second lug.