The Shenzhen small electric motor factory usually considers the following factors to analyze the project selection method. The bearing installation space can accommodate the bearing size in the bearing installation space. Because the rigidity and strength of the shaft are emphasized when designing the shaft system, the shaft diameter is generally determined first. However, rolling bearings have a variety of size series and types, from which the most appropriate bearing dimensions should be selected.
The magnitude, direction and nature of the load bearing load. Such as the size of the load, whether there is only a radial load, whether the axial load is one-way or two-way, the degree of vibration or shock, and so on. After considering these factors, choose the most suitable bearing structure type. Generally speaking, the radial load of bearings with the same inner diameter varies according to the series.
The bearing type whose speed can adapt to the mechanical speed. The limiting speed of the bearing not only depends on the bearing type, but also limited by the bearing size, cage type, accuracy grade, load condition and lubrication method, etc. Therefore, these factors must be considered when selecting. Bearings with the same structure have the highest limiting speed with an inner diameter of 50~100mm; the rotation accuracy is the type of bearing with the required rotation accuracy.
Generally, cylindrical roller bearings are selected as free ends. When the bearing is selected regardless of the fixed end and the free end, when the bearing spacing is small and the effect of shaft expansion and contraction is not large, use a nut or a washer to adjust the axial clearance after installation, generally choose two deep groove ball bearings or two self-aligning Roller Bearings Spherical roller bearings can be used as a support for fixed and free ends, or when there is no distinction between fixed and free ends.
