A bushing includes an interior surface, an exterior surface, a first end, and a second end. An end face forms at least part of each of the first end and the second end. At least one of the exterior surface and the end face includes a sealing surface formed at least in part of a coating including a material having a hardness level greater than about 1200 Knoop. The sealing surface has a thickness greater than about 35 microns and an average roughness (Ra) less than about 0.25 micron. In one embodiment, the bushing may be used on an endless track for a track-type work machine.
申请公布号
EP1766270(A1)
申请公布日期
2007.03.28
申请号
EP20050750210
申请日期
2005.05.17
申请人
CATERPILLAR, INC.
发明人
BEARDSLEY, BRAD, M.;BOWMAN, DAVID E.;DIEKEVERS, MARK S.;RAAB, KAREN R.;SMITH, WILLIAM C.;WEAVER, D. TRENT