Product Details

Thrust roller bearing:

Thrust roller bearing is used to bear the combined axial and radial load, but the radial load should not exceed 55% of the axial load.Compared with other thrust roller bearings, this kind of bearing has lower friction factor, higher speed and better centering performance.

Related Matters:

1. Selection and control of the tolerance of thrust roller bearing chamber: After the thrust roller bearing is pressed into the thrust roller bearing, it shall rotate flexibly and without retardation.If there is obvious rotation inflexibility, it indicates that the size of the shaft is too large, and the tolerance should be reduced.For example, after the thrust roller bearing is pressed into the shaft, there is an obvious sense of "rustling" by hand rotation, which may be due to too large tolerance of the shaft or poor roundness of the shaft.Therefore, when controlling the tolerance of shaft and thrust roller bearing room, the roundness should also be controlled well. Many domestic manufacturers only control the tolerance, but do not control the roundness.

2. Assembly mode of thrust roller bearing: Because thrust roller bearing is a high-precision product, improper assembly will easily cause damage to the groove of thrust roller bearing, resulting in damage to the thrust roller bearing.When the thrust roller bearing is assembled, there should be a special mold, which cannot be knocked at will. When the shaft is pressed, it can only bear force in small circle, and when the shaft is pressed in large circle, it can only bear force in large circle.It is required to use air pressure or hydraulic pressure during assembly, and the upper and lower dies should be in horizontal state. If there is tilt, the channel of thrust roller bearing will be damaged due to stress, and the guiding sound of thrust roller bearing will be generated.

3. Prevention of foreign body assembly: When the thrust roller bearing is installed on the rotor to do dynamic balance, it is easy to put the iron filings generated during dynamic balance into the thrust roller bearing, so it is best to do dynamic balance before the thrust roller bearing is installed.In order to facilitate assembly, some manufacturers paint some oil or grease in the thrust roller bearing room during assembly for lubrication effect, but often the operator is difficult to control the amount, if the oil or grease in the thrust roller bearing room accumulate more, it is easy to enter the thrust roller bearing along the shaft when the thrust roller bearing rotates.It is better not to oil or grease the thrust roller bearing room. If not, it is necessary to control the accumulation in the thrust roller bearing room.

4. Prevention of lacquer rust: The characteristic of lacquer rust is mostly in sealed motor. The sound of motor during assembly is very good.Before many manufacturers will think that the thrust roller bearing problem, after our continuous publicity, the factory has realized that the main problem is the insulation paint.The main reason for this problem is that the acidic substance volatilized from the insulating paint forms corrosive substance under certain temperature and humidity, which corroded the channel of the thrust roller bearing and resulted in the damage of the thrust roller bearing.The problem can only be the selection of good insulation paint, and after drying ventilation for a period of time after assembly.

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