NSK import the cause of the bearing temperature is too high and the necessary measures to avoid

Bearing temperature, generally have a bearing on the surface of the outdoor temperature can be predicted, if the use of oil hole NSK import bearing outer ring temperature can be directly measured, is more appropriate. Usually, NSK import bearing temperature as bearing operation began to rise slowly, 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 bearing 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 continuity of NSK import bearing temperature monitoring is necessary, bearing 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. The importance of bearing, means that when the damage cause of equipment downtime, so this type of bearings shall be equipped with best temperature probe. In just under normal circumstances, bearing lubrication or lubrication after there will be a natural temperature rise and the last one to two days. Usually, working temperature over 150 ° use called high temperature bearing NSK import bearing, due to chromium bearing steel in the use of temperature over 150 °, the hardness will fell sharply, size is not stable, the bearing can't work normally. So for the working temperature at 150 ° to 350 ° work under the condition of bearing, if rings and rolling body still choose ordinary high carbon chromium bearing steel manufacturing, it must be special tempering treatment was carried out on the bearing parts, shall generally be higher than working temperature tempering under 50 °. After tempering treatment according to the requirements of the bearing steel, can be used in normal working temperature. But after tempering hardness decreased, bearing life. Generally speaking in terms used to pay attention to the following: 1, the bearing clearance should be appropriate, too big impact, poor lubrication is too small, may burn. 2, NSK import bearings and shaft neck surface quality and geometry must be strictly guaranteed. 3, improve the quality of lubrication, control oil pressure, temperature and flow rate, strengthen the oil filtration. 4, control the temperature of the diesel engine state, in the case of overheating too cold work will be unfavourable. Cold day, should be preheated before starting of diesel engine, with the hand cranking make the oil into the friction surface. 5, conform to the provisions of the fuel and lubricating oil.