Solution test
The Working conditions of oil pump rollers are different from normal bearing rollers. Normal bearing rollers usually have a cylindrical surface as the working surface, while the main working surface of oil pump rollers is the end face. Due to the special working conditions of oil pump rollers, it is required that the height tolerance should be very good, and the perpendicularity, parallelism, and roughness of the two end faces are also much higher than the requirements of normal bearing rollers.
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