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The role and requirements of rolling bearings
The function of the bearing coordination is to make the stationary ring and rotating ring of the bearing solidify with the stationary part (usually the bearing seat) and the rotating part (usually the shaft) of the mounting part respectively, so as to realize the load transfer and the limited movement in the rotating state. The basic task of the system relative to the position of the stationary system. On the shaft and in the bearing seat, the rolling bearing is required to be in the radial, axial and tangential directions.
The function of bearing coordination is to make the stationary ring and rotating ring of the bearing solidify with the stationary part (usually the bearing seat) and the rotating part (usually the shaft) of the mounting part, so as to realize the load transfer in the rotating state. And the basic task of defining the position of the motion system relative to the stationary system. On the shaft and in the bearing seat, rolling bearings are required to fix their positions in three directions: radial, axial and tangential directions. Radial and tangential positioning are achieved by tight fitting of bearing rings. Axial positioning is only used in a few cases with tight fitting; generally axial limiting parts, such as end caps and retaining rings, are used to limit the axial position. Within the clearance range.
The following four points should be paid attention to when choosing cooperation:
(1) The circumferential surface of the bearing ring should have good support and uniform force to reduce deformation and give full play to the bearing capacity.
(2) The ferrule cannot slide in the tangential direction on its mating surface, otherwise the mating surface will be damaged.
(3) The free end bearing must be able to adapt to the change in the length of the shaft and the bearing seat hole, that is, it must have the ability to adapt to the axial position to swim within a certain range.
(4) Attention must be paid to make the bearing installation and disassembly simple and convenient, saving labor, time and expenditure.