Patent ID: 8613486

Claim:
A bushing for use in a tracked undercarriage of a track-type machine comprising: a first end; a second end disposed opposite the first end, the bushing having a length extending from the first end to the second end; an outer surface disposed between the first end and the second end, wherein the outer surface is shaped to engage a sprocket of the tracked undercarriage; and an inner surface disposed between the first end and the second end, the inner surface defining an annular internal cavity shaped to receive a track pin, wherein an innermost portion of the inner surface forms a crown having a radius less than or equal to (PL 2 )/[(24EπDR Bush 4 )(1−cos [(PL)/(16EπDR Bush 4 ))] where L is the length of the bushing, P is the weight of the track-type machine, E is the Modulus of Elasticity of the bushing, and R Bush is a radius of the innermost portion of the annular internal cavity.