| 摘要 |
1277927 Bearings NADELLA and A PITNER 29 Aug 1969 [30 Aug 1968] 43043/69 Addition to 1204156 Heading F2A A needle bearing assembly comprises an outer race, a member for supporting the outer race in a bore of a machine element and a set of rollers. The space between the outer race and a raceway formed on a shaft supported by the bearing is reduced in a number of circumferentially-spaced zones by radial deformation of the outer race resulting from axial compression of the member. In an embodiment an outer race 4, Fig. 1, of a roller bearing is mounted in a member 9 of elastomeric material which is compressed axially by means of a ring 10 being screwed into a threaded portion of a bore 2 formed in a frame 3. The member 9 is constrained in a radially-outwardly direction by the frame 3 and is deformed radially inwardly, especially in zones A, B, C, Fig. 2. The latter are formed between portions of the outer race 4, each of which has an outwardly directed radial flange segment 6 and an inwardlydirected radial flange segment 7. In other embodiments the member comprises a metal portion 16, Fig. 3, and an elastomeric portion 19, the screwed ring 10 is replaced by a pressfitted member 23, Fig. 4 (not shown) which is welded in situ at 25 and a member 28, Figs. 5 and 6 (not shown) comprising a flange 36 which is abutted by a screwed ring 37, and a portion which is received in a tapered bore 32 of the frame said portion having alternate hollow segments 34 and solid segments 33, the latter having edges which are bent radially outwardly at 33a and engage said tapered bore 32. |
