Bearing installation method – thrust bearing mounting

Bearing installation method - thrust bearing mounting:the fit between the thrust bearing and the shaft is generally a transition fit, and the fit between the seat ring and the bearing seat hole is generally a clearance fit (you must agree with me when you see this). The center collar of a bidirectional thrust bearing shall be fixed on the shaft to prevent rotation relative to the shaft. The installation method of the thrust bearing is generally the case where the shaft rotates, so the fit between the inner ring and the shaft is an over-win fit, and the fit between the outer ring of the bearing and the bearing chamber is a clearance fit.

When the thrust bearing mounting, the verticality of the shaft washer and the center line of the shaft should be checked. The method is to fix the dial indicator on the end face of the case, so that the contact head of the indicator is on the bearing shaft ring raceway while rotating the bearing, while observing the dial indicator pointer. When the shell hole is deep, the extended dial indicator can also be used for inspection. When the thrust bearing mounting is correct, its race can automatically adapt to the rolling of the rolling elements to ensure that the rolling elements are located in the upper and lower raceways.

If the thrust bearing mounting is reversed, not only the bearing will not work properly, but also the mating surfaces will be severely worn. Since the difference between the shaft washer and the seat washer is not obvious, extra care should be taken during assembly to avoid mistakes. In addition, there should be a gap of 0.2-0.5mm between the seat ring of the thrust bearing and the bearing seat hole to compensate for errors caused by inaccurate machining and installation of parts. When the center of the bearing ring is offset during operation, this gap It ensures that it adjusts automatically and avoids touching and rubbing, making it work properly. Otherwise, the bearing will be severely damaged.

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