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How to choose the imported bearing type and types - bearing knowledge

by:Waxing     2020-05-26
When choosing SKF bearing according to the size of the bearing, specifications, as well as the rotational speed and so on to select bearing whether conform to the scope of our machine use, here is a simple analyse: the first is that the size of the restrictions. SKF bearing can usually install space is restricted. In most cases, the diameter of axle ( Or bearing inside diameter) Based on mechanical design or other design constraints. So the choice is based on SKF bearing type and size of the inner diameter of the bearing. As a result, the main dimensions of the standard SKF bearing table are compiled according to the international standard diameter. The size of the standard SKF bearing form is various, in machinery design had better use standard SKF bearing ( This design to SKF bearing is easy to purchase, just as an aside, here model does have some bearing on the catalogue, but some non-standard SKF bearing areas in China there is no spot, futures will be a long time, sometimes to consider when bearing selection so late time cost and the cost of replacement) SKF bearing load, the load on the bearing, the nature, size, direction is changeable. Usually, the basic load rating on dimension table are displayed. Axial load and radial load, and so on, but also important factors is to select suitable SKF bearing. When the size of the ball and needle bearing fairly, needle roller bearing is usually have higher load capacity and bear the larger vibration and shock loads. Second, speed. Allow speed is depending on the type of SKF bearing, size, precision, cage type, load, lubrication, and cooling way. SKF bearing table lists the standard precision SKF bearing allows speed under oil lubrication and grease lubrication. Usually, deep groove ball bearings, automatic self-aligning ball bearings and cylindrical roller bearings are suitable for high-speed operation. Is again, SKF bearing tolerance. SKF bearing dimensional accuracy and rotation accuracy is according to ISO and JIS standard. For high-precision and high-speed machines, recommend the use of level 5 or above precision bearing, deep groove ball bearings, angular contact ball bearings and cylindrical roller bearing is suitable for high precision mechanical operation. Rigidity, when the SKF bearing rolling element and raceway contact pressure, will produce elastic deformation. Some mechanical need to minimize the elastic deformation. SKF bearing roller is smaller than ball bearings produced by elastic shape variables. In addition, in some cases, SKF bearing to exert preloading in order to increase rigidity. This program is typically used for deep groove ball bearings, angular contact ball bearings and tapered roller bearing inner and outer circle of bias, shaft bending, shaft or the bearing box tolerance changes, mistakes will lead to the eccentricity of the inner and outer ring. In order to prevent the eccentric Angle is too large, automatic self-aligning ball bearings, automatic self-aligning roller bearings, or self-aligning bearing seat is a better choice. Voice frequency and torque, the rolling bearing are based on high precision standard production, so the voice and the torque is small. Deep groove ball bearings and cylindrical roller bearing used for in low voice, low torque has special requirements of the occasion. Installation and removal, some applications often need to disassembly and assembly, to ensure that can regularly for testing and maintenance. Inside and outside the circle can be installed separately SKF bearing, such as: cylindrical bearings, needle roller bearings, and tapered bearing is very suitable for the occasion. Taper groove of automatic self-aligning ball bearing and spherical roller bearing with the help of the shaft sleeve, also simplifies the installation program.
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