Under normal circumstances, the rolling bearing must be tightly fitted to the shoulder of the shaft.

Inspection method:

(1) Lighting method. The lamp is aligned with the bearing and shaft shoulder, see the light leakage judgment. If there is no light leakage, it means that the installation is correct. If there is even light leakage along the shaft shoulder, it means that the bearing is not close to the shaft shoulder. Pressure should be applied to the bearing to make it close.

A method for testing the tightness of rolling bearings to shaft shoulders

(2) thickness test method. The thickness of the gauge should start at 0.03mm. Test, the bearing inner ring end face and shoulder on the circumference of a circle to try several, and if found to have clearance is very uniform, bearing is not installed in place, inflating a bearing inner ring to make it on the shoulder, if you increase the pressure also is not tight, trunnion rounded corners rounded corners of the too big, the bearing stuck, should trim trunnion rounded corners, make it smaller,, If it is found that the end face of the bearing inner ring and the thickness gauge of individual parts of the bearing shoulder can pass, it must be removed, repaired and re-installed. If the bearing is installed in the bearing seat hole with interference fit, and the bearing outer ring is fixed by the shoulder of the shell hole, whether the end face of the outer ring is close to the end face of the shoulder of the shell hole, and whether the installation is correct can also be checked by the thickness gauge.

Inspection of thrust bearing after installation

When the inference bearing is installed, the verticality of the shaft ring and the shaft center line should be checked. The method is to fix the dial meter on the end face of the case, so that the contact head of the table rotates the bearing above the raceway of the bearing shaft ring, while observing the dial meter pointer, if the pointer swings, it indicates that the shaft ring and the shaft center line are not vertical. When the shell hole is deep, you can also use the extended micrometer head for inspection. When the thrust bearing is installed correctly, the seat ring can automatically adapt to the rolling of the rolling body to ensure that the rolling body is located in the raceway of the upper and lower ring. If it is installed backwards, not only does the bearing work abnormally, but also the mating surface will suffer serious wear and tear. Because the difference between the shaft ring and the seat ring is not very obvious, the assembly should be extra careful, do not make mistakes. In addition, there should be a gap of 0.2-0.5mm between the thrust bearing seat and the bearing seat hole to compensate for errors caused by inaccurate processing and installation of parts. When the center of the bearing ring is offset in operation, this gap can ensure its automatic adjustment to avoid collision and friction and make it run normally. Otherwise, severe bearing damage will be caused.