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Points To Note When Using FAG Bearings

Source:  skf bearing  Time:  2020-09-22

    FAG bearing use factors mainly refer to whether the installation adjustment, use and maintenance, maintenance and repair meet the technical requirements. According to the technical requirements of bearing installation, use, maintenance, and maintenance, monitor and inspect the load, speed, working temperature, vibration, noise and lubrication conditions of the bearing in operation. If an abnormality is found, immediately find the cause and make adjustments to make it Back to normal. The installation condition is one of the primary factors in the use factors. The bearing is often caused by improper installation, which causes the stress state between the parts of the whole set of bearings to change. The bearing runs in an abnormal state and ends its service life early. The main internal factors are Refers to the three major factors that determine the quality of the bearing, such as structural design, manufacturing process and material quality.


    The metallurgical quality of FAG bearing materials used to be the main factor affecting the early failure of rolling bearings. With the progress of metallurgical technology (such as vacuum degassing of bearing steel, etc.), the quality of raw materials has been improved. The proportion of raw material quality factors in bearing failure analysis has dropped significantly, but it is still one of the main factors affecting bearing failure. The proper selection of materials is still a factor that must be considered in bearing failure analysis.


    The manufacture of FAG bearings generally involves multiple processing procedures such as forging, heat treatment, turning, grinding and assembly. The rationality, advancement and stability of each processing technology will also affect the life of the bearing. Among them, the heat treatment and grinding processes that affect the quality of the finished bearing are often more directly related to the failure of the bearing. In recent years, studies on the deteriorating layer of the bearing working surface show that the grinding process is closely related to the bearing surface quality.


    The main task of FAG bearing service life analysis is to find out the main factors causing bearing failure based on a large number of background materials, analysis data and failure modes, so as to propose improvement measures to prolong the service life of the bearing and avoid bearing outbursts. Early failure.FAG Bearing 61852M online, pls click here for more information.


Strong metallic tone

  1. Abnormal load: select the appropriate assembly clearance and preload

  2. Poor assembly: improve the machining accuracy of the shaft and improve the installation method

  3. Insufficient lubricant: supplement or use suitable lubricant


Regular tone

  1. Foreign matter causes channel corrosion, indentation, and scars: clean related parts and use clean grease

  2, channel spalling: fatigue wear, replace the bearing


Irregular sound

  1. Foreign matter intrusion: clean related parts and use clean grease

  2. Excessive clearance: pay attention to fit and choose appropriate clearance

  3. Steel ball scars: the steel ball is peeled off due to fatigue or foreign matter is stuck, replace the bearing


Abnormal temperature rise

  1. Too much lubricant: reduce lubricant

  2. Lubricant is insufficient or unsuitable: add lubricant or choose suitable lubricant

  3, the mating surface creep or the sealing device is too large: the bearing outer diameter or inner diameter mating surface is corrected, and the sealing form is changed


The rotation vibration of the shaft is large

  1. Spalling: fatigue spalling, replace the bearing

  2. Poor assembly: improve the machining accuracy of the shaft and improve the installation method

  3. Foreign matter intrusion: clean related parts and use clean grease


Lubricant leakage and discoloration

  1. Too much lubricant: reduce lubricant

  2. Foreign matter invasion: cleaning related parts


Preventive measures: precision machining of FAG bearing seats and shoulders

    When the bearings that have been disassembled during the regular maintenance, operation, and replacement of peripheral parts of FAG bearing equipment are stopped for inspection, it is necessary to determine in turn whether the FAG bearing parts can be used again and record the operating conditions.

    Secondly, check the raceway surface of the FAG bearing, the condition of the rolling surface and the joint surface, and the wear condition of the counter frame for damage and abnormal conditions, especially the running track of the raceway surface. To determine whether the bearing can be used again, it is necessary to consider the level of damage to the bearing, mechanical function, priority, operating conditions, inspection cycle, etc.

    Check the results. If you find damage and abnormal conditions of FAG bearings, please find out the notice and formulate countermeasures according to the phenomenon of bearing damage. In addition, the inspection results, if there are the following defects, the bearing can no longer be used, and a new FAG bearing is required.