Different bearings have different characteristics and are suitable for various application conditions of various mechanical equipment. The selection staff should choose the appropriate bearing model from different bearing manufacturers and many types of bearings. Xiaobian’s 35 years of experience in the bearing industry has summarized for you that when selecting bearing models, the following factors should generally be considered. 1. Select the bearing model according to the area and position of the mechanical equipment occupied by the bearing; we generally use ball bearings for small shafts, and roller bearings for large shafts. If the diameter and orientation of the bearing is limited, we generally choose needle roller bearings, extra light ball bearings or roller bearings; when the bearing is limited in the axial position of the equipment, we can choose narrow or extra narrow series ball bearings roller bearings. 2. Select the bearing type according to the load. The load should be the most critical factor for us to consider when selecting the bearing; the load that the roller bearing can bear is relatively large, while the load of the ball bearing is relatively small. The bearing made of carburized steel can withstand shock and vibration load. When it is necessary to bear pure radial loads, we can choose thrust ball bearings, cylindrical roller bearings or needle roller bearings. When the axial load is relatively small, we can choose thrust ball bearings; when the axial load is relatively large, generally choose thrust roller bearings. When the bearing bears both axial and radial loads, we generally choose angular contact ball bearings or tapered roller bearings. 3. Select the bearing model according to the self-aligning characteristics of the bearing; when the axis of the shaft is different from the axis of the bearing seat, or is easy to be bent or skewed under pressure, self-aligning balls or rollers with excellent self-aligning functions can be selected Bearings, and their outer ball bearings. This type of bearing can guarantee normal operation when the shaft is slightly skewed or bent. The quality of the bearing's self-aligning function is related to its misalignment. The larger the value, the better the self-aligning characteristic. 4. Select the bearing model according to the stiffness of the bearing; the elastic deformation of rolling bearings is not large, which can be ignored in most mechanical equipment, but in some mechanical equipment, such as machine tool spindles, bearing stiffness is a key factor; machine tool spindle bearings we Cylindrical roller bearings or tapered roller bearings are generally used. Because these two types of bearings are in point contact when they are under load, their rigidity is weak. In addition, various bearings can also use preload to increase the rigidity of the bearing. Such as angular contact ball bearings and tapered roller bearings, in order to improve the support rigidity, a certain axial force is usually added in advance during assembly to make them clamp each other. It is especially emphasized here: the preload force should not be too large. Otherwise, the friction of the bearing may increase, the temperature will increase, and the service life of the bearing will be affected. 5. Select the bearing type according to the speed of the bearing; Generally speaking, angular contact bearings and cylindrical roller bearings are suitable for high-speed workplaces; tapered roller bearings are suitable for low-speed workplaces. Thrust ball bearings have a low limit speed and are only suitable for places with lower speeds. For the same type of bearing, the smaller the specification, the higher the allowable speed. When selecting the bearing model, pay attention that the actual speed is less than the limit speed. When you choose the bearing model in your actual application, you can choose according to the above needs. It has a history of 35 years in the bearing industry and meets all bearing requirements such as precision angular contact ball bearings, cylindrical roller bearings, and machine tool spindle bearings. Various types of bearings Complete, can also be customized according to actual needs!
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