How to improve the needle roller bearing the actual machining precision?

In order to improve the actual fit precision of the rolling bearing when installation, must not make bearing deformation measuring method and measuring tools, the needle roller bearing of the surface of the inner hole and cylindrical coordinate measure precision of the actual size, can be related to the inner diameter and outer diameter measuring project all be measured, and a comprehensive analysis of measured data, based on this, according to the precision with a shaft with a hole the size of the bearing installation site. In the actual measurement with a shaft and the corresponding size and shape of the hole, should be the same as the measured when the needle roller bearing temperature conditions. In order to guarantee a higher actual cooperate effect, the surface of the shaft and hole and bearing are suitable, the roughness should be small as possible. When measuring above, should be on the bearing outer circle and inner hole, as well as the shaft and hole corresponding to the surface, near the sides of the assembly chamfering can separately in Ming direction of maximum deviation of two sets of tags, so that when the actual assembly, make suitable maximum deviation on the same position of the two parties, so after the assembly, the two sides to partially offset the deviation. Make directional signs, the purpose of the two groups is the deviation of the compensation can be considered, even if the rotation of supporting their precision is improved, and between the two bearing hole and trunnion coaxiality error to get part on both ends. To cooperate with the surface to surface strengthening measures, such as sandblasting processing, with a slightly larger diameter of column precision plug plug a hole, etc. , are beneficial to improve the fit precision.