Analysis of TIMKEN Bearing Damage

Posted by michelle on June 3rd, 2021

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Long-term use of TIMKEN bearings will inevitably cause some problems. When using bearings, attention should be paid to the inspection and maintenance of the bearings. Bearing problems should be dealt with immediately to avoid delaying normal work.

There are two common problems in TIMKEN bearings: bearing running noise and bearing equipment temperature is too high. Imported bearings have good working noise during operation. If the noise is too high or abnormal or impact noise, the bearing has shortcomings. The common shortcoming of the correct use of bearings and imported bearings is the complex cause of noise. First, the mating surfaces of the inner and outer rings of the bearing wear. Due to this wear, the bearings and housing, bearing and shaft joints are damaged, and the high-speed movement of the shaft deviates from the correct direction, resulting in abnormal noise. When the bearing is fatigued, the metal on its surface falls off, and the radial clearance of the bearing increases abnormally. Otherwise, insufficient lubrication of TIMKEN bearings will cause abnormal movements such as dry friction and bearing breakage. After the bearing is worn and loose, the cage will be damaged and loose and will also produce abnormal noise.

When the bearing temperature is too high in the running arrangement,the bearing part of the equipment is allowed to have a certain temperature. When touching the housing by hand, the joint should not feel normal, otherwise it should indicate that the bearing temperature is too high. The reason for the high bearing temperature: the quality of the lubricant does not meet the requirements or deterioration, the viscosity of the lubricant is too high, the equipment layout is too tight, the bearing equipment is too tight, and the bearing seat ring changes on the shaft or housing. The bearing seat ring changes on the shaft or shell, and the TIMKEN bearing seat ring changes on the shaft or shell. Bearing overload, bearing cage or roller breakage, etc.

If the bearing is damaged due to disassembly inspection,the problem and cause of the damage can be judged according to the damage of the bearing. The imported bearing raceway and roller body are tempered. Burns are usually caused by insufficient lubrication, unqualified or deteriorated lubricants, and excessive bearing equipment. The crack of the bearing seat ring may be caused by the tight fit of the TIMKEN bearing, the loosening of the inner and outer rings, the deformation of the bearing seat, and the uneven processing of the bearing surface of the equipment.

Cage breakage is caused by lack of lubrication,roller breakage,seat ring skew,etc. Severe wear of the seat race may be caused by foreign objects falling into the seat ring, insufficient lubricant, or an improper lubricant trademark. The uneven contact surface between the plastic deformed bearing raceway and the roller indicates that the imported bearing has undergone plastic deformation. The reason is that under a large static load or impact load, part of the stress on the working surface exceeds the yield limit of the material, which usually occurs on TIMKEN bearings with lower speeds.