Lead to bearing temperature, lubricant dry, and even make the bearing jammed

Most bearings manufacturer catalogue provide rev limit value of its products. Practice has proved that the bearing in lower 90% under the working state of the limit speed is better. In general, in high speed of work situation, appropriate chooses deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings; Under the low speed of the workplace, can choose tapered roller bearings. Tapered roller bearing limit speed, generally about 65% of the deep groove ball bearings, cylindrical roller bearing, 70% of the 60% of the angular contact ball bearing. Thrust ball bearing shaft limit rotational speed is low, can only be used for low speed occasion. For the same kind of bearing, the smaller the size, allowing the rotational speed is higher. When choosing bearing, should pay attention to make the actual speed is lower than the limit speed. 6. Swimming bearing and axial displacement under normal circumstances, a shaft with a certain distance apart of two bearing support. In order to adapt to the shaft and the shell is not the same degree of heat bilges cold shrink, when installation should be in a bearing axial will be fixed, and the other a bearing on the shaft can be swimming, The winding bearing) , in order to prevent the stuck phenomenon caused by shaft stretch or shrink. Swimming bearing usually choose inner ring or outer ring without penal cylindrical roller bearings and needle roller bearings, mainly due to such internal structure allows the shaft and the bearing shell with appropriate between axial displacement, at this point, the figure and shaft, outer ring and shell hole can adopt tight fit. When using inseparable from type bearing do travelling support, such as deep groove ball bearing, spherical roller bearing, the installation must be allowed in the outer ring and shell holes, or inner ring and shaft adopts a loose fit, axial can swim free. 7. Facilitate the installation of the bearings and removing choose bearing type, the bearing installation and disassembly is convenient, also must be thoughtful, especially for large and super large bearing installation and removal is particularly important. Generally the outer ring of separable angular contact ball bearings, tapered roller bearings, cylindrical roller bearings and needle roller bearings, installation and disassembly are convenient, their inner ring and outer ring can be respectively installed on the shaft into the filling body hole. In addition, with conical hole inner diameter, adjust the panels with tight sleeve bearing, double row circular は child bearing and self-aligning ball bearing, easy to install and disassemble. 8. Other requirements in addition to the above factors, but also should consider working environment temperature of the bearing, bearing seal and the special requirements such as friction torque, vibration and noise