Patent ID: 8231184

Claim:
A mounting for a track support roller of a track laying tractor, comprising: a shaft extending axially through said roller and having opposite ends projecting axially beyond opposite axially facing ends of said roller; a thrust bushing assembly received on said shaft in supporting relationship to said roller for permitting said roller to rotate about said shaft, with said thrust bushing assembly including opposite ends defined by annular, axially outwardly facing thrust faces; a pair of annular spacers being received on said shaft respectively adjacent said opposite ends of said thrust bushing assembly; each of said spacers having an inner axially facing, annular contact surface engaged with an adjacent one of the thrust faces of said thrust bushing assembly and having an outer axially facing annular surface; first and second mounting brackets being respectively fixed to said opposite ends of said shaft and having inner axially facing annular surfaces shaped complementary to and abutting said outwardly facing annular surfaces of said pair of annular spacers, with the complementary abutting surfaces of adjacent ones of the pair of spacers and first and second brackets each being spherically contoured thereby defining a spherically contoured interface.