Industrial import bearings, lubrication, installation maintenance and repair

For as long as possible in good condition to maintain the import bearing performance, maintenance, repair, in order to prevent accident arrangement to ensure the reliability of operation, improve the productivity and economy. To maintain the best conditions of mechanical operation of the corresponding operation standard, on a regular basis. Content includes monitor running status, supplement or replacement of lubricants, remove the check on a regular basis. As maintenance issues in the operation, with the rotation of the imported bearing state of sound, vibration, temperature, lubricant and so on. Imported bearing cleaning: removing import bearings under repair, the appearance of the first record import bearings, confirm the residual stock of lubricant, sampling inspection with lubricant, bearing. Common use gasoline, kerosene as a cleaning agent. Tear open come down to import bearings cleaning, rough washing and fine washing, respectively in the container, put a metal mesh bottom first, make the imported bearing no direct contact with dirt from the container. Coarse when cleaning, if the imported bearing with dirt, can injure the rolling surface of the imported bearing, should be pay attention to. In coarse clean oil, use a brush to remove grease, adhesive, after clean, roughly into fine cleaning). Fine cleaning, is to import the bearing side rotation in the wash oil, while carefully cleaned. In addition, the clean oil is always kept clean. Imported bearing inspection and judgment: in order to judge whether the imported bearings of the removed can use, check import bearings in clean water after. Check the raceway surface, rolling surface, cooperate with the state, the abrasion of cage, import the increase of the bearing clearance and has nothing to do with dimension precision falling damage, abnormal. Non separation of small ball bearings, with one hand will support level, the inner ring spinning confirm whether smooth outer ring. Separation of tapered roller bearings and bearing, rolling body, the outer ring raceway surface can be respectively. Large imported bearing can't rotate with the hand, pay attention to check the rolling element and raceway surface, cage, guard surface appearance, such as the importance of the imported bearing high must check carefully. Imported bearing lubrication purpose: rolling imported bearing lubrication purpose is to reduce the bearing internal friction and the friction losses, prevent burning stick, its lubrication effect is as follows. ( 1) Reduce friction and friction losses. In imported bearing ring, rolling body and touch each other part of the retainer, prevent metal contact, reduce friction and wear. ( 2) Extend the fatigue life. Import of fatigue life of rolling bearing, in the rotation, good lubrication performance of the rolling contact surface, are extended. On the contrary, the oil viscosity is low, the thickness of lube film is not good, is shortened. ( 3) Discharge the friction heat and cooling. Circulation method to oil and so on can oil discharge by the friction heat, or by an external sound of heat, cooling. Prevent imported bearing overheating, prevent aging oil itself. ( 4) Other import bearing internal also has to prevent foreign invasion, or to prevent rust and corrosion effect. Lubrication methods: imported bearing lubrication method, divided into grease lubrication and oil lubrication. In order to make the imported bearing function well, first of all, to choose suitable for conditions of use, the purpose of lubrication method. If only consider lubrication and oil lubrication. However, grease lubrication can simplify the structure of imported bearings around specialty, compare the pros and cons of grease lubrication and oil lubrication. Imported bearing installation: 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) Cleaning import bearings and bearing components associated; ( 2) Check the size of the interrelated parts and finishing; ( 3) Installation; ( 4) After installed imported bearing inspection; ( 5) Supply of lubricant. Hope before the installation, just open the packaging imported bearing. General grease lubrication, cleaning, not directly fill grease. 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 imported bearing. Remove the rust inhibitor of bearing, easy to rust, so cannot be placed. Furthermore, have the imported bearing grease sealed, not directly use cleaning. Imported bearing installation method, due to the bearing structure, cooperate, conditions vary, in general, as more as the axis of rotation, so the inner ring need interference fit. Cylindrical hole bearing, multi-purpose press pressure into, or multi-purpose hot charging method. Taper hole, installed directly on the taper shaft, or use the socket installation. 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 imported bearings. So, need a good rust prevention measures.