High-speed bearings have higher precision and smaller surface roughness than cheesy bearings. High-speed bearings have small clearance.
The intuitive difference is that the surface of high speed bearings is smoother than that of cheesy bearings, and the high speed bearing clearance is smaller if you shake the outer ring and inner ring.
1、For large size, large load, vibration, high speed or working temperature, should make the bearing and the state with some tight!
2、Use lubricating oil to reduce friction, the load is large, the working temperature is high when it is appropriate to use high viscosity oil, easy to form an oil film, thus reducing heat generation!
(1) spindle maintenance personnel on the use of pairs of angular contact ball bearing options, installation level.
(2) electric spindle maintenance disassembly times. The same set (group) of bearings disassembled many times, the bearing life is bound to have a certain impact
(3) the old and new degree of electric spindle and different manufacturers of electric spindle structure and manufacturing quality of different.
(4) the electrical failure of the spindle itself, such as wet weather in the south, the electric spindle shell moisture burned, rotor shaft silicon steel piece burn
(5) oil spray cooling with lubricants containing impurities.
(6) the technical quality and responsibility of the machine tool operator. For example: the test many times due to operational errors, resulting in oil breakage, grinding head into the water, so that the bearing burned.
(7) the proper storage of bearings, such as bearing serious rust, bearing pollution, etc.
The speed of 3000 ordinary bearings can withstand, more than 5000 speed can be used to high-speed bearings to assembly, the clearance is more suitable for this type of work, high-speed bearings.
