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The comprehensive verification method of bearing installation accuracy is now specifically introduced. First, the linear bearing is installed into the main shaft of the bearing. The verification of installation accuracy goes through the following four steps:
1. Measure the size of the shaft and bearing housing holes to determine the accuracy of the bearing fit. The inner ring and the shaft adopt an interference fit, and the outer ring and the bearing seat hole adopt a clearance fit.
2. Installation of the fixed-end front bearing on the shaft: the bearing is thoroughly cleaned with clean kerosene, and then a certain amount of grease is filled into the bearing with an oil gun; the bearing is heated to increase the temperature by 20-30°C, and the NSK is used to Put the bearing into the shaft end; press the adapter sleeve on the shaft and press the bearing end surface with an appropriate pressure to axially position it; wrap the spring scale tape on the outer ring of the bearing and verify the provisions by measuring the starting torque Whether the preload of the company has changed significantly.
3. Install the bearing-shaft assembly into the seat hole: heat the seat hole to increase the temperature by 20 to 30°C, and install the bearing-shaft assembly into the seat hole with continuous gentle pressure; adjust the front cover to use the outer end surface of the bearing seat as For reference, put the dial head of the dial gauge against the surface of the journal, rotate the shaft to measure its runout, position the dial gauge on the shaft, and touch the inner surface of the rear seat hole, rotate the shaft to measure the front and rear seats of the bearing housing The coaxiality of the hole.

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