Why the life of the thrust roller bearing purchased by myself is so short, the original truth is here

328 Published by admin May 22,2018

1. Look at the selection and control of the tolerance of the thrust roller bearing housing: After the thrust roller bearing is pressed into bearing, it should be flexible and non-stop. If the rotation is inflexible, it indicates that the size of the shaft is too large, and the tolerance is reduced. If the bearing is pressed into the shaft and then rotated by hand, there is a noticeable "rustle" sensation. It may be that the tolerance of the shaft is too large or the roundness of the shaft is not good. Therefore, when controlling the tolerances of the shaft and thrust roller bearing chamber, roundness must be controlled. At present, many domestic manufacturers only control the tolerance and do not control the roundness.

thrust roller bearing China suppliers

2, prevent the assembly of foreign bodies: thrust roller bearings mounted on the rotor when the dynamic balance is easy to balance the iron powder generated inside the thrust roller bearings, it is best to install the thrust roller bearings before the dynamic balance . In order to facilitate assembly, some manufacturers apply some oil or grease in the thrust roller bearing assembly for lubrication. However, it is often difficult for the operator to control the amount of oil. If the oil or grease accumulates in the bearing room It is easy to enter the inside of the thrust roller bearing along the shaft when the thrust roller bearing rotates. The thrust roller bearing chamber is best not to be oiled or greased. If it is not
3, the prevention of paint rust: Paint rust is characterized by multiple in the sealed motor, the motor sounds very good in the assembly, but put some time in the warehouse, the motor abnormal sound becomes very large, remove the thrust roll Sub-bearings have serious rust. In the past, many manufacturers would consider the problem of thrust roller bearings. After our constant publicity, now the motor factory has realized that it is mainly the problem of insulating paint. This problem is mainly due to the fact that the acid material that is evaporating from the insulating paint forms corrosive substances under a certain temperature and humidity, and corrodes the thrust roller bearing to cause damage to the thrust roller bearing. This problem can currently only be selected for good insulation lacquer and assembled after ventilation for a period of time after drying.thrust roller bearing NTN brand
4. Assembly of thrust roller bearings: Because the thrust roller bearing is a high-precision product, if it is improperly assembled, it can easily cause damage to the bearing channel, leading to damage to the thrust roller bearing. Thrust roller bearings should be equipped with a special mold, can not be arbitrarily beat, when the press into the shaft can only be a small circle force, when the large circle can only be large circle force. Air pressure or hydraulic pressure is required during assembly. The upper and lower molds must be outside the horizontal state during press-fitting. If there is inclination, the thrust roller bearing channel will be damaged due to the force, and it will produce the sound.

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