Clearance selection and ferrule processing of double row deep groove ball bearings (2)

Update:30-09-2019
Summary:

When selecting the double-row deep groove ball bearing […]

When selecting the double-row deep groove ball bearing clearance, first consider that the elastic tension of the double row deep groove ball bearing and the shaft and the casing hole will lead to the change of the bearing clearance value. Generally, the clearance value will be reduced after the bearing is installed; If the double row deep groove ball bearing is in the process of the mechanism, due to the different heat dissipation conditions of the shaft and the outer casing, a temperature difference between the inner ring and the outer ring will occur, which will result in a reduction in the clearance value; Due to the different expansion coefficients of the outer casing material, the clearance value may be reduced or increased.

In addition to the clearance, the ferrule is an important part of the double row deep groove ball bearing, and attention should be paid to its accuracy, service life and performance. The raw materials for the manufacture of double row deep groove ball bearing rings are cylindrical bars or tubes, which can currently have different manufacturing processes depending on the molding process.

One is blanking, forging, annealing, heat treatment quenching, tempering, grinding, part inspection, demagnetization, cleaning, and submitting assembly; the other is blanking, cold heading, heat treatment quenching, tempering, grinding, parts Inspection, demagnetization, cleaning, and assembly; and one is blanking, turning, heat treatment quenching, tempering, grinding, part inspection, demagnetization, cleaning, and assembly.

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