| 摘要 |
<p>This disclosure teaches structure for mounting a pressure plate relative to its supporting shaft in such a manner that axial forces are transmitted between the shaft and pressure plate while yet providing that the plate can freely rotate and swivel relative to the shaft even at varying angles of tilt. The mounting structure includes a pair of angular contact bearings arranged in back to back relationship, the inner races thereof being confined on the shaft and the outer races thereof being confined within a housing block. The housing block is nonrotatably keyed to the pressure plate and a single ball bearing is mounted between the pressure plate and bearing block in axial alignment with the shaft and with the pressure plate. In effect then, one of the angular contact bearings is working to allow free pressure plate rotation and swivel when axial compression forces are applied between the shaft and pressure plate, and the single ball bearing self aligns the axial force coaxially of the shaft and bearing plate; while the other angular contact bearing is working to allow free pressure plate rotation and swivel when the shaft is elevated and the plate is not supported on its underside.</p> |
