The process of monitoring FAG bearings after installation and maintenance procedures

A, bearing installation and remove the caution must be different types, different sizes of imported bearing, its installation method and tools are not the same, there are mechanical or hydraulic. Here is mainly explain some common basic installation method and points for attention. First, do not install on the ball hard, it will cause the ball bearing and contact local overload, leading to FAG bearing premature failure. Second, do not use hard tools, such as hammer, screwdriver, banging on the surface of the bearing, it will make imported bearing outer ring or brittle fracture. Second, the use of clean clean environment for bearing bearing is very important. Imported bearing ring rotation surface and rough surface precision of the rolling element is about 1/10 microns, this smooth surface of the ball if polluted, its influence is very serious. Lubrication layer between the rolling surface usually is 0. 2 ~ 1 microns, is greater than the lubricant type size particles of impurities are influenced by the excessive rolling rolling element and local stress in spherical roller bearing steel, eventually lead to permanent material fatigue. In addition to this, the external environment of dust particle size can be up to 10 microns, will also be pair of roller bearing damage. Because of this, clean and tidy working environment for imported bearings how important it is. Three zhongtong overheating, bearing test in dry up import bearing operating temperature induction, if found temperature exceed the prescribed limits will automatically alarm, to prevent burning shaft situation. 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: may be insufficient bearing lubrication lubricant is unqualified, it contains impurities, heavy load time can also be create friction FAG bearing internal clearance is not enough oil seal and so on. The installation of the bearing is correct, affects the precision, life and performance. Therefore, design and assembly department for the installation of the bearing be fully studied. Hope to work in accordance with the standards for installation. Operation standard project usually is as follows: ( 1) Check the size of the associated components and finish machining condition; ( 2) Installation; ( 3) Supply of lubricant. ( 4) Cleaning bearings and bearing related parts; ( 5) After installed bearing inspection; Hope before the installation, just open the bearing packing. Lubricating oil, ordinary also don't have to be clean, but, instrument or high-speed with imported bearing, etc. , to be washed with clean oil, remove rust inhibitor) on the bearing. General grease lubrication, cleaning, not directly fill grease. Also, has the bearing grease sealed, not directly use cleaning. Remove the rust inhibitor of bearing, easy to rust, so cannot be placed. When installed on the shell, clearance fit more commonly, outer ring have surplus quantity, usually use the pressure into the press and or have shrink fit method of cooling after installation. Use dry ice as coolant, shrink fit installation, the moisture in the air condenses on the surface of bearing. So, need a good rust prevention measures. FAG bearing installation method, because the bearing structure, cooperate, conditions vary, in general, as more as the axis of rotation, so the inner circle need interference fit. Taper hole, installed directly on the taper shaft, or use the socket installation. Cylindrical hole bearing, multi-purpose press pressure into, or multi-purpose hot charging method.