To improve the actual fitting accuracy of the deep groove ball bearing during installation, it is necessary to use a measuring method and measuring tool that does not deform the deep groove ball bearing to measure the inner hole and outer circle of the deep groove ball bearing. All measurement items related to the inner diameter and outer diameter can be measured, and the measured data can be analyzed comprehensively. Based on this, the size of the deep groove ball bearing mounting part of the shaft and the seat hole can be precisely matched. When measuring the corresponding size and geometry of the shaft and seat hole, it should be carried out under the same temperature conditions as when measuring the deep groove ball bearing.
To ensure a high actual matching effect, the surface roughness of the shaft and the seat hole matched with the deep groove ball bearing should be as small as possible.
When making the above measurements, two sets of two sets, which can indicate the direction of deviation, should be made on the outer circle and inner hole of the deep groove ball bearing, as well as on the corresponding surfaces of the shaft and seat hole, on both sides near the assembly chamfer. To make the deviation of the matching two sides align with the same orientation during actual assembly, so that after assembly, the deviation of the two sides can be partially offset.
The purpose of making two sets of orientation marks is that the compensation of the deviation can be comprehensively considered so that the rotation accuracy of the supports at both ends can be improved, and the coaxiality error of the seat hole between the two supports and the journals at both ends can be partially obtained. eliminate. Implementing surface strengthening measures on the mating surface, such as sandblasting, plugging the inner hole with a precision plunger with a slightly larger diameter, etc., will help improve the mating accuracy.
