Linear bearing installation maintenance and temperature determine damage analysis

TIMKEN 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, TIMKEN bearing temperature as bearing operation began to rise slowly, 1 - After 2 hours to reach steady state. TIMKEN bearing normal temperature due to the heat capacity of the machine, 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 TIMKEN bearing operating temperature, and implement e. automatic alarm when the temperature exceeds or stop to prevent the shaft accidents. In high temperature often is in abnormal situation. High temperature is harmful to the TIMKEN 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 TIMKEN bearings 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 of TIMKEN 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. TIMKEN bearing temperature measured on a regular basis can use thermometer, digital thermometer, for example, can accurate bearing temperature measurement and display by ℃ or Fahrenheit units. Peeling depth is shallow, usually only a few microns or less than 1 mu m ( Some literature 20 microns) 。 Usually in the linear bearing is running after a round of or tens of millions of millions into peeling off. In most cases these into a period of flake type will not damage the general purpose, No special requirement) Bearing, and for high precision and high speed bearing, does not allow this into a period of peeling off. It is enough. More than 120 ℃ tempering occur will cause the bearing, the lower hardness and precision of the ring. Place the bearing on the electric hot plate temperature of 100 ℃ for a few minutes, this method is most convenient, such as reverse it a few times can make the bearing heated evenly, and the efficiency is high, the size of the bearing can use this method. The linear bearing in the automatic temperature control of the closed electric furnace heating, uniform heating, accurate temperature control, heat fast, suitable for the occasion of a batch of heating a lot of bearing. Induction heater can be used to fast, reliable and clean the bearing heated to the required temperature, which are particularly suitable for the inner ring of the tight fit, just because of the heated inner ring, and the outer heat is small, so can be a drag on the shaft, also easily into a hole. Use of 50 w bulb heating linear bearing, can guarantee the heating temperature about 100 ℃, the smaller the bearing can be directly on the bulb, larger bearings taper enclosure may be placed on a light bulb, conical cover can prevent heat losses, bulb and heated evenly. Conical cover can be adjusted up and down, in a certain heating range that can adapt to different size of bearing. If the far infrared light bulb, pay attention to the light bulb direction should be down, so as to avoid of infrared radiation is bad for the eyes. Imported pump this bulb can be energy saving. Bulb heating method is suitable for small and often do not need; To the bearing heating, light bulbs still can make lighting at ordinary times, moreover does not need any other equipment. This is a widely used traditional heating method, the bottom of the tank from 50 to 70 mm in a metal mesh, bearing on the Internet, large linear bearing to hoist hooks. Bearing should not be placed directly on the bottom of the channel, in case of contact with the bottom of the channel bearing parts of the local heat is too high, or dirt into the bearing groove bottom sediment. Oil tank heating method of the key points are as follows, should use no corrosive thermal stability good mineral oil, it is best to transformer oil, oil, and the container should be kept clean. Tank capacity should be and the size of the heated bearing and oil amount, if the container is too small, in continuous operation, a into the linear bearing oil temperature will drop quickly, the effect is bad.