(2) thickness test method. The thickness of the gauge should start at 0.03mm. During the inspection, several places are tried on the end face of the bearing inner ring and the whole circumference of the shoulder. If there is a gap and it is very uniform, the bearing is not installed in place. The bearing inner ring should be pressurized to make it close to the shoulder. If the pressure is not tight, it means that the roundness of the shaft neck is too large and the bearing is stuck. The shaft neck roundness should be trimmed to 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.

Such as: thrust bearing inspection after installation

When installing thrust bearings, the verticality of shaft ring and 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 dial meter rotates the bearing above the raceway of the bearing shaft ring, and observe the dial meter pointer. If the pointer swings, it indicates that the shaft ring and the center line of the shaft 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 0 between the seat ring and the bearing seat hole of the thrust bearing. 2-0. 5mm clearance is used to compensate for errors caused by inaccurate machining and installation of parts. When the center of the bearing ring is offset in operation, this clearance can ensure its automatic adjustment to avoid contact friction and make it run normally. Otherwise, severe bearing damage will be caused.

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