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How to properly install the cross roller bearing to achieve the best rotation effect

August 02, 2018

Isn't people often the most important thing? Then the same is true for the bearing. The foundation of the bearing is its own quality. After the strict control of the bearing steel and the cross-Roller Bearing technology, the quality of the skf bearing produced is absolutely the best. But why do you still see some problems with damage? This is mainly caused by inadvertent use, but it has not been seen because of the quality of the bearing itself.

By combining the fault and deterioration of the bearing, the performance state parameter to judge and predict the reliability and performance of the skf bearing, identify and judge the location, cause and degree of the abnormal situation, and determine the comprehensive technology of the repair and improvement method. Therefore, the fault diagnosis technology of the bearing is not a simple fault detection (or monitoring) technology, nor is it a simple inspection instrumentation. Acquire signals correctly, quickly and efficiently, data processing, manual or automatic identification and judgment. In order to determine the scientific repair cycle, the necessary tests and estimates of fatigue and wear life should be performed according to the mechanism of various failures.

1. Shaft tolerance and bearing chamber selection and control: skf bearing has no flexibility after rotating pressure. If the significant rotation is not flexible, the size of the shaft is too large and the tolerance is degraded. If the bearing is pressed into the hand after the obvious "sand" in a certain sense of steering the shaft, it may be too much round shaft or shaft tolerance is not good. A good shaft center control room and bearing tolerances, so the roundness should also be controlled.

2, bearing assembly mode: because skf bearings are high-precision products, such as improper assembly, easy to damage the channel bearings, resulting in bearing damage. Bearings in assembly, there should be a special mold, can not be defeated, the thrust force can only be a small circle, the press only forces the circle. The assembly requires the use of air pressure or hydraulic pressure, when crimping the upper and lower molds, outside the national level, if the slope of the passage will cause damage to the crossed roller bearings, due to power, leave the guide ring of the produced bearings.

3, the prevention of the assembly of foreign objects: the bearing is installed in the rotor dynamic balance is easy to produce the dynamic balance of the bearing in the iron filings before installation, so it is best to do dynamic balancing. The skf bearing puts some oil or grease lubrication in the conference room, but the operator often has difficulty controlling the amount. If the plot in the oil or grease bearing is left indoors, it is easy to rotate along the shaft to the inside of the crossed roller bearing. The bearing chamber is preferably not oiled or greased. If it is not coated, there must be no conspiracy skf bearings to stay indoors.

4, the prevention of paint rust: paint rust is characterized in a sealed motor, the multiple motors in the assembly sounds good, but in a warehouse for a while, the motor becomes very abnormal sound, removing the bearing from severe rust. Many manufacturers will be seen as problems with front cross roller bearings, and now major electrical plants are aware of the problem of varnish. The main problem is that the insulating paint from the volatile acid at a certain temperature, the corrosion and protection of the humidity metal, the formation of corrosive substances, the corrosion caused by the channel skf bearing. The only problem now is to choose a good varnish and air dry for a while after assembly.

5. Bearing life is closely related to manufacturing, assembly, and use, and must be made for every link to enable the country to operate the best bearings, thereby extending the service life of the crossed roller bearings.

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