Bushing for a track-type undercarriage
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United States of America Patent
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Dec 24, 2013
Grant Date -
May 12, 2011
app pub date -
Nov 4, 2010
filing date -
Nov 9, 2009
priority date (Note) -
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Abstract
A bushing for use in a tracked undercarriage of a track-type machine includes a first end and a second end disposed opposite the first end. An outer surface extends between the first end and the second end and is shaped to engage a sprocket of the tracked undercarriage. The bushing also includes an annular inner surface disposed between the first end and the second end defining an internal cavity shaped to receive a track pin. An innermost portion of the inner surface forms a crown having a radius less than or equal to (PL2)/[(24EπDRBush4)(1−cos [(PL)/(16EπDRBush4))] 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 RBush is a radius of the innermost portion of the annular internal cavity.
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