1、Shaft and bearing room tolerance selection and control: bearing pressed into the plane bearing should rotate flexibly without blocking feeling. If there is obvious rotation inflexibility, it indicates that the size of the shaft is too large, the tolerance should be adjusted downward. If SUNTHAI bearing pressed into the shaft after the hand rotation has obvious “rustle” feeling, then it may be too large tolerance or shaft roundness is not good. So in the control of the shaft and bearing room tolerance should also control the roundness, at present, many domestic manufacturers only on the tolerance control, no control of roundness.

2, bearing assembly: because the bearing is a high-precision products, such as improper assembly is easy to cause damage to the bearing groove, resulting in bearing damage. sunthai bearing in the assembly should have a special mold, can not be randomly knocked, in the pressure into the shaft can only be small circle force, pressure big circle only big circle force. Assembly requires the use of air pressure or hydraulic pressure, the upper and lower die in the pressure assembly to be outside the horizontal state, such as tilt will lead to plane bearing groove due to force damage, and the bearing to produce guide ring.

3, assembly of foreign objects to prevent: bearing in the installation to the rotor to do dynamic balancing is easy to dynamic balancing when the iron chips into the bearing inside, so it is best to do dynamic balancing before loading bearings. There are some manufacturers in order to facilitate assembly, assembly in the bearing room coated with some oil or grease lubrication effect, but often the operator is difficult to control the amount of good, if the oil or grease in the bearing room to accumulate more, in SUNTHAI bearing rotation is easy along the shaft into the plane bearing inside. Bearing room is best not to apply oil or grease, such as the non-coating must be controlled not in the bearing room has to stay.

4, varnish rust prevention: varnish rust is characterized by more in the sealed motor, the motor in the assembly sound is very good, but in the warehouse after some time, the motor noise becomes very large, remove the bearing has a serious rust phenomenon. In the past, many manufacturers would think that it is the problem of bearings, after our continuous publicity, now the motor factory has realized that it is mainly the problem of insulating paint. The problem is mainly because the insulating paint volatile acid in a certain temperature, humidity to form corrosive substances, the plane SUNTHAI bearing groove corrosion caused by SUNTHAI bearing damage. The problem can only be assembled after using good insulating paint and ventilating for a period of time after drying.