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Precision grades of precision machine tool spindle bearings and their application on machine tools
During the operation of machine tools, rolling bearings are generally used in the following three parts: machine tool spindles, ball screws and drive shafts. In terms of bearing accuracy, the bearings we should use on more precise machine tools should be precision machine tool spindle bearings. In the operation of the machine tool, the bearing is an important part of the machine tool, which has a very important influence on the accuracy, rigidity, shock resistance, noise level, temperature rise, speed, etc. of the machine tool, so it is also an important factor for the quality of the processed product . Therefore, processed products and machine tools with relatively high quality requirements should be equipped with high-precision machine tool spindle bearings. According to the precision of machine tool bearings, we generally divide them into P0-P6, of which P5 and P6 are used in machine tools in equipment with a rotation accuracy of 5-10 microns or high speed requirements; P4 and P2 bearings are generally used in some milling machines, In the transmission gear system of the grinding machine, the rotation accuracy does not exceed 5 microns; P0 bearings are generally used in the speed regulating parts of ordinary machine tools. It has been standing in the production field of precision machine tool spindle bearings for 37 years. The bearing raw materials are all purchased by our company independently. The steel materials are preferentially Xingcheng Special Steel and Daye Special Steel. The steel balls are made of the two best steel ball manufacturers in China, General Motors and Dong'a, and the cage is made of tin balls, which are second to none in China. The bearings have high speed and long life. your cost. Only when the torque is accurate can the rotation be stable!
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