INA ball screw bearing common temperature and vibration analysis

Get good lubrication, if INA bearing and the correct cut off impurities and moisture, said oil seal should not wear. However, best when open the bearing box, check the bearing and periodically check the oil seal. Check of the condition of the near the ball screw bearing oil seal, in order to ensure that they are enough to prevent hot corrosion along the axis of the liquid or gas into liquid or bearing, oil seal if already wear should be replaced as soon as possible. High temperature often said bearing is in abnormal situation. High temperature also harmful to within the bearing lubricant. Sometimes bearing overheating can be attributed to bearing lubricant. If INA bearings in more than 125 degrees Celsius temperature operation for a long time, will reduce the bearing life. 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 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. 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. Usually, the temperature of the ball screw bearing with INA bearings 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 the bearing temperature at any time, and realize e. automatic alarm when the temperature exceeds or stop to prevent the shaft accidents. With high temperature often said INA bearings is in abnormal situation. High temperature is also harmful to ball screw 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 ring, clearance, high friction and oil seal, etc. The causes of INA bearings include: insufficient lubrication or excessive lubrication, lubricants containing magazine, heavy load, bearing damage, clearance, and the oil seal of high temperature and friction and so on. Bearing roller and the inner and outer ring raceway surface under the role of the periodic pulse load, resulting in a periodic change of contact stress when stress cycles after reaching a certain value, the rolling element bearings, their work within or on the surface will produce fatigue spalling if the bearing load is too big, can make the fatigue is increasing also, bearing installation is not straight, shaft bending, also can produce raceway flaking off bearing raceway fatigue spalling can reduce the running accuracy of shaft, bearing vibration and noise in the body burns heat tint on the raceway and rolling body burns are usually the cause of insufficient lubrication, lubricating oil quality does not conform to the requirements or deterioration, and bearing assembly tight INA bearing raceway and roller contact surface appear uneven pits, that cause plastic deformation of the ball screw bearing is a bearing in large under static load or shock loading, local stress exceeds the yield limit of material on the surface of the work, this kind of situation usually happened in the low-speed rotation of the bearing