How to Assemble Thrust Ball Bearings

There are two key points in the assembly of thrust ball bearings. One is the control of the quality of the cage and the steel ball press, and the other is the control of the nominal height T after bearing assembly. In addition, due to the shaft ring, seat ring can be separated, brings a management problem. is to prevent imported bearing parts from being mixed. M- stamping cages use elbows to assemble molds. After pressing, the steel ball is required to rotate flexibly in the pocket hole, but it can not be removed from the pocket hole, and the technical procedures to check the spout of the steel ball in the pocket hole.

The solid cage is pressed too deep lysing will make the steel ball sprang momentum is small, and the imprinting raised part and the cage connection is too little and the strength is insufficient, easy to appear the phenomenon of falling block, resulting in the cage scrap. The size of the small thrust ball bearing ring is very small from the diameter of the shaft circle, and there is no obvious difference between the two sets. In order to prevent the appearance of mixing sets, a set of bearings fitted found that both are seat rings or shaft rings.

This requires certain measures. Usually when the set is combined with the aid of the assembly will be drawn, seat group to distinguish, or before the sampling of the nominal height with the inner diameter plug gauge to check the size of the inner diameter, in order to check the inner diameter convenient, the seat ring below, shaft ring above. If the seat circle diameter has obvious quenching to heat the oxide color or not to be grounded, then there is no need to check the size of the inner diameter, can clearly see the difference between the shaft ring and the seat ring, not easy to mix sets. After assembly of thrust ball bearings, the nominal height T must be measured to confirm that it is qualified. When measuring, the load is calibrated with a height block or standard piece and the load is measured, and the bearings need to be rotated dozens of times to a minimum height.

When the thrust ball bearing is running at high speed, the contact angle of the steel ball and the radial plane of the raceway is affected by centrifugal force, which causes the steel ball to slide against the raceway. The sticky wear caused by this slide can damage the bearings. In order to prevent this damage, it is necessary to ensure that the minimum load on the thrust ball bearing is ensured, see Formula 1 or Formula 2, the larger in the calculation value.