In the industrial manufacturing field, many businesses need to purchase a certain number of bearing parts to support the mechanical rotating body and reduce its friction coefficient in the process of movement, and then ensure its rotary accuracy and improve its efficiency. Then, the key to the FAG imported bearing tolerance level is to determine according to the shaft to support the point of rotation accuracy.
Level 0: Generally used for bearing systems with rotational accuracy over 10 microns, the application is very common. For example, the speed control mechanism on the ordinary CNC lathe, go tool mechanism, the speed control mechanism of the car, the speed control mechanism of the big tractor, the rotation mechanism of the ordinary chemical machinery such as motor, centrifugal pump and agricultural machinery.
Level 6, 5: In the precision bearing system with rotating accuracy in 5-10 microns or high speed, such as the common bearings of CNC lathe (front support point 5, rear support point 6), finer instruments and equipment, instrument panel and its instruments, dashboard and precision rotating mechanism.
Level 4, level 2: in the super instrumentation, such as fine coordinate milling machine, fine grinding machine drive gear system software, such as instrumentation, instrument panel and high-speed camera, etc., rotational accuracy of no more than 5 microns, the speed is relatively high. China bearing the old code before the accuracy level code.
Accuracy is divided into specification accuracy and rotational accuracy. Divided into 0 degrees, 6X degrees, 6 degrees, 5 degrees, 4 degrees, 2 degrees.
P0(0),P6(6),P5(5),P4(4),P2(2) grade. Common specifications grade P0, reflected in the bearing type specification is omitted, only P6 or P6 above grade, grade code appears in the bearing type specification.
In addition, a variety of precision bearings in the processing of different separation, in the use of value is also different. For example, the use value of China bearing, the accuracy is 1.5 times of P6, 2 times of P5, 2 times of P4, 2 times of P5, 2.5 times of P5.
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