Several Methods for Failure Treatment of FAG Cylindrical Roller Bearings

According to the formation mechanism of the grinding surface of the FAG bearing working surface, the main factors affecting the grinding of the metamorphic layer are the effects of grinding heat and grinding force. Let's analyze the reasons for the failure of cylindrical roller bearings.

1. The main purpose of preloading: The main purpose and representative examples of preloading can be exemplified by some examples:
(1) While accurately determining the position of the radial direction and the axial direction of the shaft, the runout of the shaft is suppressed.
(2) Improve the rigidity of the FAG bearing. Bearings for the main shaft of the machine tool, bearings for the differential gears of the bicycle differential mechanism.
(3) Prevent vibration in the axial direction and abnormal sound due to resonance. Bearings for small motors.

For the cylindrical roller bearing subjected to the combined load, the number of rolling elements under load increases, the frictional resistance increases, the amount of fever increases, the lubrication and cooling conditions become worse, and the force acting on the cage also increases, so According to the FAG bearing type and the load angle, the limit speed of the bearing must be multiplied by a reduction factor f2 to adjust.

If the limit speed of the selected cylindrical roller bearing is not satisfactory for the application, some improved techniques can be used to improve the request to reach a more satisfactory request. Such as improving the bearing tolerance difference; properly increase the clearance; use special materials and improve the structure of the support frame; change the lubrication method, such as oil and gas, oil mist and jet lubrication; improve cooling conditions.

Temperature rise is likely to occur during the use of FAG bearings. When the temperature of the cylindrical roller bearing rises, first judge whether it is wrong or not. If it is really raised, it should be done as follows

deal with:
 (1). Check the cooling water pressure, water flow and piping system are normal. If the water pressure is low, the filter may be clogged and cannot be disposed of in time. It can be shut down and put into use when it is confirmed that it can work.
 (2). Check the oil pressure of the governor. If the oil pressure is low, the cooling water hydraulic valve may be closed.
 (3). Check if the FAG bearing has abnormal sound and check if the cylindrical roller bearing swing is abnormal.
 (4). Take an oil sample to see if there is any change in the oil color and test it to see if it has deteriorated. If deterioration is confirmed, stop replacing the new oil.
 (5). Check if the oil level is normal. If it is not normal, check if the oil drain valve is closed. If it is closed, it should be replenished. If the gasket is oily, stop it.