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Industry Information

Damage forms of cylindrical roller bearings at high temperatures

Edit:Shandong Yunhua Bearing Co., Ltd. Time:2023-06-12

When the temperature of cylindrical roller bearings increases, the first step is to determine whether there is any incorrect action. If the temperature is indeed increasing, the following measures should be taken immediately:

(1) Check whether the cooling water pressure, water flow, and pipeline system are normal. If the water pressure is low, it may be due to filter blockage and cannot be dealt with in a timely manner. When it is confirmed that it can work, it can be shut down and put into use.

(2) The oil pressure of the governor should be checked. If the oil pressure is low, it may cause the cooling water hydraulic valve to close.

(3) Check if there is any abnormal noise in the bearing and check if there is any abnormality in the swing of the cylindrical roller bearing.

(4) Take an oil sample to observe if there is any change in the color of the oil, and conduct laboratory tests to see if it has deteriorated. If deterioration is confirmed, the machine should be shut down and replaced with new oil.

(5) Check whether the oil level of the oil level gauge is normal. If it is not normal, check whether the oil drain valve of the oil tank is tightly closed. If it has been tightly closed, oil should be replenished. If the sealant pad leaks oil, it should be shut down for processing.

The bearings in operation of production equipment show slight damage without accidents:

(1) There are slight signs of rotational slipping on the surface of the inner or outer diameter of the bearing.

(2) Corrosion on the mating and working surfaces of bearings.

(3) There are scratches or indentations on the inner diameter, outer diameter, raceway, and surface of the rolling element of the bearing.

(4) Friction and adhesion between the roller end face and the edge surface.

(5) There is slight wear on the working surface of the bearing.

The performance of bearings in operation during accidental damage after failure is as follows:

(1) The cage is distorted, deformed, or broken.

(2) The rolling element is fragmented.

(3) Fatigue peeling occurs on the working surface of the bearing load zone.

(4) Axial cracking or fragmentation of the inner and outer rings of the bearing.

(5) The outer ring of the bearing has radial cracking, fragmentation, or edge loss.

(6) Deformation of the bearing inner and outer rings, rollers, and formation of pressure pits in the raceway.