What to do if the bearing overheats?

What to do if the bearing overheats?

When a bearing overheats, the following measures should be taken to solve the problem:

1. Check the lubrication condition:

(1) Check the amount of grease and ensure that the amount of grease added is approximately 1/2~2/3 of the space volume of the bearing chamber. Too much or too little grease can cause bearings to overheat.

(2) Check the quality of the grease to ensure that the grease has not deteriorated or been mixed with impurities. Unsuitable or deteriorated grease should be cleaned and replaced with suitable clean grease.

(3) Check whether the lubrication pipeline is blocked and ensure that the lubrication system is unobstructed.

2. Check the cooling system:

(1) Check whether the cooling water pressure, water flow and piping system are normal. If the water pressure is low, the filter may be clogged and the filter should be cleaned or replaced in time.

(2) Check the oil pressure of the governor to ensure that the oil pressure is normal to avoid closing the cooling water hydraulic valve due to low oil pressure.

If the cooler is inappropriate or the cooling effect is poor, it should be replaced in time or a new cooler should be installed in parallel.

3. Check the bearing status:

(1) Check whether there is any abnormal noise in the bearing, and detect whether there is any abnormality in the bearing swing.

Take an oil sample to see if there is any change in the color of the oil, and perform a test to see if it has deteriorated. If deterioration is confirmed, the machine should be shut down and replaced with new oil.

(2) Check the installation of the bearing to ensure that the matching tolerances between the bearing and the shaft, the bearing outer ring and the end cover are appropriate, and avoid friction and heat caused by being too tight or too loose.

4. Check equipment vibration:

Check whether the equipment has excessive vibration problems, such as poor coupling alignment process that does not meet the requirements, dynamic and static imbalance of the rotor, etc. These problems may cause the bearing to heat up.

Other notes:

Bearing selection should be appropriate to avoid bearing heating caused by improper selection.

Check whether the oil level of the bearing box is normal. If it is abnormal, adjust it in time.

The problem of bearing heating may involve many aspects, which need to be comprehensively considered and corresponding measures taken.

Solving the problem of bearing overheating requires inspection and adjustment from many aspects such as lubrication, cooling, bearing status, equipment vibration, etc. By taking the above measures, the bearing temperature can be effectively reduced and the normal operation of the equipment can be guaranteed.