Choose bearing reference standard

Analyze project selection method 1) Bearing installation space can accommodate in bearing installation space type bearing due to the design of shafting pay attention to the rigidity and strength of shaft, so generally, first determine the diameter of axle, bearing inside diameter. But rolling bearing series of a variety of sizes and types, should choose the most suitable type of bearing. 2) The size, direction and nature of load bearing load [ Bearing load capacity with basic rated load, according to the values shown in table bearing size] Bearing load abound change, such as the size of the load, if only the radial load, axial load is a one-way or two-way, the degree of vibration or shock, and so on. After considering these factors, and then to select the most appropriate type of bearing. In general, the same inner diameter of the bearing radial load capacity increasing in the following order: < < angular contact ball bearing deep groove ball bearing cylindrical roller bearing < < taper roller bearing self-aligning roller bearings (3) Speed can adapt to mechanical bearing type [ To benchmark the threshold of the bearing rotating speed in limiting speed, its value is shown in table bearing size] Bearing limit rotational speed is not only to take on bearing type is limited to the bearing size, cage type, precision grade, load condition and lubrication method, etc. , therefore, when the choice must consider these factors. Most of the following bearings used in high speed rotation: deep groove ball bearings, angular contact ball bearings, cylindrical roller bearing (4) Has the required rotation accuracy of rotary precision bearing type [ The dimensional accuracy and rotation accuracy of bearing is not the GB by bearing type standardization] 机床主轴、燃汽轮机和控制机器分别要求高旋转精度、高转速和低摩擦，这时应该使用5级精度以上的轴承。 Generally use the following bearings: deep groove ball bearings, contact ball bearing, cylindrical roller bearing. 5) Just performance to meet required for mechanical shafting rigid bearing type [ Bearing the load, the part of the rolling element and raceway contact will produce elastic deformation. 'High rigidity' refers to the deformation of the elastic deformation smaller] Reduction device at the end of the spindle and auto parts, such as to raise the axial rigidity of at the same time, also must improve bearing rigidity. Roller bearing the load deformation than ball bearings. (on bearing preload Negative clearance) Can improve the rigidity. The method is suitable for angular contact ball bearings and tapered roller bearings. 6) Inner ring and outer ring of the tilted relative analysis causes the bearing inner ring and outer ring tilted relative factors ( Such as load caused by the deflection of shaft, shaft, and the precision of the shell bad or installation error) And choose to adapt to the conditions of use of the bearing type.