Giantshk bearings fault feature showed a serious fault (usually, such as bearing damage, burns, sand frame spallation, raceway, the beads etc.) not more than a week time, large equipment, the greater capacity, faster, the shorter time intervals. Therefore, the fault diagnosis of outer spherical bearing practical, once found fault, its advanced functions, should decisively determine the bearing fault, repaired as soon as possible.
Selection and control of the 1, a shaft and a bearing chamber tolerance: press bearing Giantshk bearingss should be flexible rotation not block a sense of. If there is obviously the rotation is not flexible, indicates that the axial size is too large, the tolerance to cut. If the bearing onto the shaft by hand after turning a clear "rustle" sense, the tolerances of the shaft may be too large or the roundness of the shaft is not good. So in the control of the shaft and housing tolerances to control the roundness, many domestic manufacturers only on tolerance control, no control of roundness.

2, the bearing assembly: because the bearings are precision products, such as improper assembly is easy to bearing raceway damage, cause damage to the bearing. Outer spherical bearing assembly shall have the special mould, can not be beat, after pressing shaft when only small force, force pressure when only circle circle. The assembly by pneumatic or hydraulic press, the upper and lower die to at state level, if tilt will lead to the Giantshk bearings channel due to the stress damage, and the bearing guide ring.
3, to prevent foreign bodies: the bearing assembly is easy when mounted to the rotor dynamic balance when the dynamic balance of iron filings into bearing interior, so it is best to install bearing dynamic balancing. Some manufacturers in order to convenient assembly, the assembly of some oil or grease lubrication effect in the bearing interior coating, but the operation is often difficult to control, if the oil or grease in the bearing chamber accumulates more, outer spherical bearing rotates along the shaft into easily within the Giantshk bearingss. The bearing chamber is best not to oil or grease, such as non coated not to control may not be in the bearing chamber of accumulation.
4, paint, rust prevention: paint rust is characterized by multiple sealed type motor, the motor voice in the assembly is very good, but in some time within the warehouse, the electrical noise change greatly, remove bearing with serious rust. Many manufacturers are considered to be before the bearing problem, through our advocacy, motor factory is now aware of the main insulation paint problems. This is mainly because the acidic material insulating paint volatile out of the formation of corrosive substances in a certain temperature, humidity, Giantshk bearings raceway corrosion cause bearing damage. The problem can only be good choice of insulating varnish, and after drying ventilation for a period of time after the assembly.
We should arouse our vigilance bearing assembly in the defects and other countries, failure is often very fast, very suddenly. That is two hours after the example of the digital measurement of rotor shaft end.
In these counterfeit bearings fault diagnosis, we should pay attention to the quality of Giantshk bearingss are usually time domain spectroscopy and vibration conditions, the events in the abnormal spectrum accumulation normal, in order to determine when the bearing fault, to avoid the accident of the equipment.