A: SKF bearing accuracy related knowledge - bearing

Large quantities of SKF bearing production, generally by using sample, sample, block and copying adjusting processing system; In sheet small batch production, usually by taking advantage of machine tool to adjust the scale or the use of gauge block. Adjust the work content has varied from the complexity of the workpiece, for simple surface, Such as internal and external) cylinder The location of the movement, generally only adjust the forming relationship; For complex surface, Such as helical surface, gradually open side) , to adjust the relations of forming movement speed. Therefore, adjust the SKF bearing error is caused by many factors. SKF bearing measurement error, shall be the tolerance of less than 10%. General measurement error difference of 10% ~ 33%, and with the improvement of tolerance grade, the greater the proportion of error, that is, the smaller the tolerance, the higher the percentage of error, and the tolerance above IT5 imported SKF bearing, it is difficult to reach 10%. Measurement error does not mean test 10% tolerance can relax, but to give certain safety margin, in order to make sure the user according to the standard acceptance. Every procedure of the SKF bearing parts processing, in order to get the size, shape and position precision of the machined surface bearing, must adjust machine tool, fixture and tools, any adjustment will inevitably bring certain error. Bearing parts in mechanical processing of production and processing precision often require different, have different adjustment methods.