New four-point contact ball bearing

Abstract

The invention provides a new four-point contact ball bearing, comprising an outer ring, inner rings, a steel ball and retainers. The contact angle of the bearing is increased to 40 degrees so as to improve the axial bearing capacity of the bearing. The retainers are integrated self-locking retainers and the steel ball can be effectively locked by inner counter bores of the retainers, thus effectively preventing the retainers from deformation caused by chiseling and printing and the ball from falling caused by uneven lock amount. The bearing is suitable for subway and light rail gear boxes and other similar special conditions.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to a four-point contact ball bearing, which is applied to a subway light rail gearbox. Background technique [0002] The contact angle of the original four-point contact ball bearing is 35 degrees, which is in the form stipulated by the national standard. This structural bearing is suitable for ordinary combined radial and axial loads, while the subway light rail gearbox requires the bearing to withstand pure Under the condition of high-speed rotation under axial load, the bearing of the original structure has low axial load capacity and reliability, so it is not suitable for this working condition. Contents of the invention [0003] The purpose of the present invention is to provide a new type of four-point contact ball bearing, which can improve its axial bearing capacity to meet the working conditions of the bearing used in the subway light rail gearbox. [0004] The technica...

AI Technical Summary

Problems solved by technology

[0002] The contact angle of the original four-point contact ball bearing is 35 degrees, which is in the form stipulated by the national standard. This structural bearing is suitable for ordinary combined radial and axial loads, while the subway light rail gearbox requires the bearing to withstand pure High-speed rotation under axial load, the original structure bearing has low axial load capacity and reliability in this case, so it is not suitable for this working condition

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