FAG bearing damage judgment analysis of vibration and temperature

Vibration of bearing vibration is sensitive to bearing damage, such as peeling, indentation, rust, crack and wear will be reflected in the bearing vibration measurement, therefore, through the use of special FAG bearing vibration tester ( Frequency analyzer, etc. ) Can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Measured values of bearing or sensor installation position and different using conditions, thus requiring prior to each machine is analyzed by the measured value of the determined after judgment standard. FAG bearing temperature, generally have a bearing on the surface of the outdoor temperature can be predicted, if using the oil hole can directly measure temperature of bearing outer ring, is more appropriate. Generally, the temperature of the bearings with bearing operation began to slowly rise, 1 - After 2 hours to reach steady state. The normal temperature of bearing for machine heat capacity, heat dissipating capacity, rotational speed and load. If the appropriate lubrication, installation department, the bearing temperature will rise sharply, appear unusually high temperature, must stop at this moment, take the necessary precautions. Using thermal device can monitor FAG bearing operating temperature at any time, and realize e. automatic alarm when the temperature exceeds or stop to prevent the shaft accidents. In high temperature often is in abnormal situation. High temperature also harmful to the bearing lubricant. Sometimes overheated bearings can be classified to the bearing lubricant. If the bearing temperature for a long time even the transfer of more than 125 ℃ lower bearing life. The causes of high temperature bearing include: lubrication inadequate or excessive lubrication, the lubricant. Contains impurities, heavy load, bearing damage, clearance, high friction and oil seal and so on. So the continuous monitoring FAG bearing temperature is necessary, whether measured bearing itself or other important parts. If it is on the basis of the operating conditions, the temperature change of any fault has occurred. Regular bearing temperature measurement by using a thermometer, digital thermometer, for example, can accurate bearing temperature measurement and display by ℃ or Fahrenheit units. Common bearing damage can be divided into four categories: bearing improper installation damage; Bearing fatigue damage; Poor lubrication bearing damage; Bearing the contaminated case of damage. FAG bearing installation environment if there are dust, metal scraps into the bearing, and will cause bearing is not clean, so recommend before use to unpack the bearing, and want to clean the bearing. If the installation bearings do not pay attention to, when to use brute force, will cause the deformation of bearing; If the installation does not reach the designated position, will cause the bearing clearance is too small. These are the cause of bearing damage. FAG bearing damage is the biggest cause of bad lubrication, if not timely filling lubricant or lubricant not filling in place, plus the improper selection of lubricant, etc can cause damage of bearing.