Patent ID: 8287056

Claim:
A lobed bushing for a track assembly of a track-type machine, the track assembly including a first chain and a second chain coupled together with a track pin, comprising: a bushing defining a longitudinal axis and having a central bore oriented along the longitudinal axis and extending from a first end of the bushing to a second end of the bushing for receiving the track pin, wherein an outer surface of the bushing at each of the first and second ends includes a substantially cylindrical shape; and wherein a substantially central portion of the bushing extending between the first and second ends includes a first lobe defining a first wear region and being oriented at a first location about the longitudinal axis, and a second lobe defining a second wear region and being oriented at a second location about the longitudinal axis, is the second location being less than about 180Â° around the longitudinal axis from the first location, wherein a thickness of the substantially central portion of the bushing is greatest at the first and second locations.