Grease-storing bearing retainer with rectangular R pockets

Abstract

The invention discloses a grease-storing bearing retainer with rectangular R pockets. The bearing retainer is provided with ball holes and is characterized in that the ball holes are the rectangular R pockets with arc corners, and pits are formed in the wall surfaces of the rectangular R pockets and contact balls. The bearing retainer has the beneficial effects that as the pockets are rectangular, a peripheral clearance is reduced by 70%, and an axial floating space is enlarged by 80%; the R pits are formed in the wall surfaces of the rectangular R pockets, and R is slightly less than the radian of the balls, thereby achieving the aims of storing the lubricating grease to generate a grease film so as to reduce a friction coefficient; and the R pits are formed in the wall surfaces of the rectangular R pockets and play a role in guiding the design of an R pit structure. The bearing retainer can ensure that a bearing runs stably and rotatably with high precision when working at a high speed and an ultrahigh speed, break through the conditions of low precision and heating of the conventional bearing at a high speed, and improve the precision of whole machinery equipment.

Description

technical field [0001] The invention relates to a bearing cage, in particular to a rectangular R-pocket fat-storage bearing cage, which is mainly used for high-precision angular contact bearings under high-speed rotation. Background technique [0002] When the ball bearing is working, the inner ring moves with the rotating shaft, the inner ring drives the balls, and the balls push the cage to rotate. Since the ball hole of the existing angular contact bearing cage technology is a round hole, the circumferential clearance is large. When the cage is rotating Impact and radial and axial movement will occur. For high-speed bearings with tens of thousands of revolutions per minute (dmn value 1.5 million), the impact and movement seriously affect the stability and rotation accuracy of the bearing, which in turn restricts the machine. The high speed, high precision and high efficiency of the equipment produce high precision parts. Contents of the invention [0003] The purpose o...

AI Technical Summary

Problems solved by technology

[0002] When the ball bearing is working, the inner ring moves with the rotating shaft, the inner ring drives the balls, and the balls push the cage to rotate. Since the ball hole of the existing angular contact bearing cage technology is a round hole, the circumferential clearance is large. When the cage is rotating It will produce impact and radial and axial movement. For high-speed bearings with tens of thousands of revolutions per minute (dmn value 1.5 million), the impact and movement seriously affect the stability and rotation accuracy of the bearing, which in turn restricts the machine. The high speed, high precision and high efficiency of the equipment produce high precision parts

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