About NTN spherical roller bearing with correct measures to prolong life

In use for NTN bearing strong impact, will produce scar and creasing, become the cause of the accident. Severe cases, can crack, fracture, so must pay attention to. Avoid to existing workers NTN bearing to replace, must use the appropriate tools. We often stressed the importance of tools, because there are too many customers in the installation using the wrong tool for the spherical roller bearing damage. In the shaft and bearing seat, bearing requirements in the radial, axial and tangential direction to three directions such as fixed position. Through the positioning of the radial and tangential the tight fit of bearing ring, the axial positioning only in a few cases with tight fit; Generally USES the axial spacing parts, such as end cover and retainer could happen on the axial location clearance range. Choosing cooperation should focus on the following four: ( 1) Bearing ring circumferential surface should have good bearing and force uniform, in order to reduce the deformation, and can give full play to the bearing capacity of the spherical roller bearing. ( 2) Ring in its surface can't slide along the tangent direction, otherwise it will damage the mating surface. ( 3) Freedom end bearing must be able to adapt to changing with the length of the shaft and bearing seat holes, which must have to adapt to the axial location within a certain range of swimming ability. ( 4) Must pay attention to make the NTN bearing installation and easy disassembly, saving time and expenses for the province. Operation of the spherical roller bearing, sweat will become the cause of rust. Attention should be paid to operation with clean hands, best gloves as far as possible. Want to use the appropriate tools, this will help prevent damage for other machine components, incorrect unloaded technology may cause damage to the bearing, if bearing reaches its final use period, should be replaced. Although spherical roller bearings can not be used, but properly unloaded the original bearing, replace new bearing in time, to extend the service life of new bearing can play a good role in promoting, so the old and new replacement, is very important, which requires professional personnel to check operation of thermal device can monitor at any time move the bearing operating temperature, and realize automatic alarm when the temperature more than designated value, or rest to prevent burning shaft accidents. In high temperature often 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 spherical roller bearing in more than 125 ℃ temperature for a long time even move to reduce the 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 is necessary to move the bearing temperature, NTN bearing whether measured bearing itself or other important parts. If be in operation under the condition of invariable premise, any temperature change can be said has been down. Bearing temperature measurement can be on schedule with the aid of thermometer, digital thermometer, for example, can accurate spherical roller bearing temperature measurement and display by ℃ or Fahrenheit units. Bearing temperature, generally have a bearing on the surface of the outdoor temperature can be predicted, if use oil hole can directly measure temperature of bearing outer ring, bearing is more appropriate. Usually, spherical roller bearing temperature follow bearing operation began to slowly rise, 1 - Two hours later to not disorderly state. NTN bearing normal temperature due to the heat capacity of the machine, heat dissipating capacity, rotational speed and load. If appropriate lubrication, installation department, bearing temperature will rise sharply, will bring about unusually high temperature, then must rest, take the necessary precautions.