Bearing retainer

Abstract

The invention provides a bearing retainer, and belongs to the technical field of bearing retainers. The bearing retainer is used for corrugated bearings made of synthetic resin. Concave parts and shoulders on a corrugated annular body A and on a corrugated annular body B are distributed in an alternate mode. The concave parts and the shoulders are connected through matching of small conical holes of the shoulders and conical columns of the shoulders. The inner surfaces of the concave parts are concave spherical faces. The ratio of the radius SR1 of the concave spherical faces and the radius SR of a sphere 7 ranges from 1.08 to 1.20. The spherical center of the sphere and the spherical centers of the concave spherical faces are located in the radial direction, and the spherical center of the sphere is in the intersection point of the radial direction and the axial direction. The spherical centers of the concave spherical faces deviate from the concave spherical faces. The deviation distance of the spherical centers of the concave spherical faces and the spherical center of the sphere is (0.02-0.07) SR1. The combination faces of the concave spherical faces and the shoulders are in rounded corner connection, and round corners are R0.3-R2.0. According to the technical scheme, the technical problems that a connection structure between annular bodies of an existing retainer made of synthetic resin is complex, concave parts are complex in shape, implementation is difficult, machining and assembling errors are likely to occur, and matching precision of the concave parts of the annular bodies and the sphere is affected are solved.

Description

technical field [0001] The invention belongs to a bearing cage, in particular to a corrugated ball bearing cage made of synthetic resin. Background technique [0002] The bearing cage is a dynamic friction and wear part that bears various complex stresses in the bearing. The steel cage has the disadvantages of large mass, large friction coefficient between steel and steel, and large friction between steel ball and cage; small friction and low density , Lightweight synthetic resin cages have the disadvantage of low strength. Generally speaking, the wave-shaped cage is more wear-resistant than the crown-shaped cage, and is more suitable for high-speed applications. The crown-shaped cage is mostly used in the working environment with less force and lower speed. Therefore, the synthetic resin cage The frame is mostly a crown-shaped cage. It is the working direction of the industry to use synthetic resin to make corrugated cages and to give full play to the advantages of corrug...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the connection structure between the concave parts of the annular body of the existing synthetic resin retainer is complicated, the shape of the concave part is complex, the implementation is difficult, and processing and assembly errors are prone to occur, which affects the accuracy of the fitting between the concave part of the annular body and the ball. Technical problem, to provide a synthetic resin corrugated ball bearing cage with simple structure and suitable for high-speed operation

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