| 摘要 |
A linear motion ball bearing assembly having improved load bearing capabilities with shafts having ball-conforming grooves is for axial movement along a shaft having at least one ball-conforming groove formed on the shaft; the bearing assembly has a plurality of raceways provided by ball retainers mounted to a bearing sleeve, each raceway has a load-bearing track portion and a load-free track portion and is substantially filled with balls which re-circulate in the raceway, with a loadcarrying plate forming part of each load-bearing raceway track portion and having a ball-conforming groove for receiving balls while under loading in the load-bearing track portion; each load-bearing plate which corresponds to a ball-conforming shaft groove is reorientable to tilt about the line of balls under loading and simultaneously roll about the interior surface of the housing in which the bearing assembly is retained such that each load-carrying plate can reorient itself to accommodate misalignment between the ball-conforming shaft groove and its corresponding ball-conforming plate groove. |
