Analysis Of The Causes Of Damage And Failure Of SKF Angular Contact Ball Bearings During Use

Bearing vibration is very sensitive to damage to SKF bearings. For example, spalling, indentation, rust, cracks, wear, etc. will be reflected in the vibration measurement of angular contact ball bearings. Therefore, by using a special bearing vibration measurer (frequency analyzer, etc.) The size of the vibration can be measured, and the specific abnormality can be inferred through frequency analysis. The measured values vary depending on the operating conditions of the bearing or the installation position of the sensor. Therefore, it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment criteria.
The temperature of the bearing can generally be estimated from the temperature outside the bearing chamber. It would be more appropriate if the oil hole can be used to directly measure the temperature of the bearing outer ring.
Usually, the temperature of SKF bearings begins to rise slowly as the bearings operate, and reaches a stable state after 1-2 hours. The normal temperature of deep groove ball bearings varies depending on the machine’s heat capacity, heat dissipation, rotation speed and load. If the lubrication and mounting parts are suitable, the bearing temperature will rise sharply and abnormally high temperatures will occur. At this time, the operation must be stopped and necessary preventive measures must be taken.
Thermal sensors can be used to monitor the operating temperature of angular contact ball bearings at any time, and automatically alarm or stop when the temperature exceeds the specified value to prevent shaft burning accidents.
High temperature often indicates an abnormal situation. High temperatures are also harmful to bearing lubricants. Sometimes bearing overheating can be attributed to the bearing’s lubricant. If the bearing rotates continuously for a long time at a temperature exceeding 125°C, the service life of the SKF bearing will be reduced. Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricants. Contains impurities, excessive load, damaged bearing rings, insufficient clearance, high friction caused by oil seals, etc.