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Bearing Fault And Its Countermeasure

Rolling bearing, if you can make the right choices without errors, can be used for a long time; in the case of right choices, proper use, damage to peel. The other hand, there are unexpected early injuries and could not resist using early injury; as the reason for the injury, using lubrication considering enough, foreign body, and hence bearing installation errors and the deflection of the shaft and the shaft and housing, materials research, such as precision. It can be said that these reasons coincide more.

Rolling bearing faults is generally shown as two, one is the bearing temperature is too high, the other is the bearing noise in operation.

1, axle bearing temperature too high

While the host is running, install the bearing parts allows a certain degree of temperature, when the hand touching the host shell, should not feel hot as normal, otherwise, indicates that the bearing temperature is too high.

Bearing temperature higher reasons: lubricating oil quality does not meet the requirements, or deterioration, oil viscosity too high; host assembled too tight (lack of clearance): bearing Assembly too tight; turning block bearing washer on the shaft or overload; bearing cage and rolling elements and broken, and so on.

2, axle bearing noise

Operation noise of rolling bearing allowed light in their work, and if the sound is too large or unusual noise or impact sound click sound, then the bearing is faulty.

Causes of noise of rolling bearings is complicated, one is the bearing inner and outer rings supporting surface. This type of wear, damage the bearings and housings, bearing and axle support, led axis deviates from the correct location, and abnormal sound of bearings running at load time. When the bearing fatigue, surface spalling; also increased radial clearance of bearings will produce noise. In addition, insufficient bearing lubrication, forming dry friction, as well as bearing fragmentation produces abnormal noises. Wear loose after the open, loose cage damage, can also produce noise.

Fault removal method


(1) when replacing the bearings, check the new bearing, both the shaft and bearing bore and the rotor carefully checked;


(2) when assembling and disassembling bearing, strict implementation of the maintenance process, serious operation to avoid bearing damage caused by improper installation;

(3) fuel oil change on time, ensure the bearing condition is always in good condition;


(4) operation check, found hidden fault, to eliminate.