| 摘要 |
1,211,578. Roller bearings. NADELLA and A. PINTER. 1 Feb., 1968 [10 Feb., 1967; 12 Sept., 1967], No. 5215/68. Heading F2A. A roller bearing assembly for fixing in at least one direction the axial position of one machine element 1 relative to another 8 comprises needles 3 radially guided by two raceways which are fixed or formed on the respective machine elements, the needles being circumferentially guided by a cage 11 and having opposite ends abutting two radial faces 2, 4 which are fixed with respect to the respective raceways thereby fixing the relative axial position of the machine elements in at least one direction. Two such assemblies may be used to prevent axial displacement in both directions of an element, such as a shaft having a double shoulder (Fig. 10, not shown), by arranging each assembly to exert its retaining action in opposing directions. The double shoulder on the shaft may be replaced by annular washers (Fig. 12, not shown) which are joined in such a manner as to counteract the expansion in the shaft and the connectors between the washers during operation in order that the distance between the washers on which the rollers bear is not changed. |
