INA cylindrical roller bearing the normal use of the key operation maintenance problems

Dynamic operation, from the beginning of no-load speed, slowly progress to the rated operating conditions. Test run to check the items, whether there is abnormal sound, cylindrical roller bearing temperature changes, smooth agent leaked or discoloration, and so on. If discovery is unusual, should immediately stop, check machine, when it is necessary to remove the bearing inspection. INA bearing assembly has been completed, in order to check the device correctly, to stop check. Small mechanical energy enough hand rotation, to confirm whether it can rotate smoothly. Check project has formed as a result of foreign bodies, scars, indentation seized up, due to the bad device, device processing torque instability as a result of the bad, because the clearance is too small, installation error, seal friction and provoked torque is too big, and so on. If there is no abnormal can start power operation. Large machinery from manual rotation, so the no-load start immediately after cut off the power, machine idle, for vibration, noise, rotating parts can have contact and so on, confirmed after no abnormalities, into power operation. Bearing the examination such as the rotation of the sound with a stethoscope, a strong metal noise, different sound and irregular clarify abnormal sound, etc. Its reason is smooth, shaft or precision bearing, cylindrical roller bearing damage, foreign body intrusion, etc. Large ball bearings, grease is smooth, in particular environmental conditions, such as, low temperature in winter, there will be a roll-off problem. Ordinary, even if the attack roll-off sound, the temperature of the bearing will not rise, will not affect the fatigue life, smooth life, normal use. INA bearing temperature, ordinary can be based on speculation and the outside of the bearing temperature. But used oil hole directly measure the temperature of the bearing outer ring more accurate. Bearing temperature, from the beginning of operation gradually rise, usually 1 ~ 2 hours after the temperature stability. If INA bearing assembly, the temperature will rise sharply, abnormal high temperature. For reasons such as smooth agent, cylindrical roller bearing clearance is too small, too much bad device, seal installation too much friction, etc. High-speed rotation, the choice of the ways of bearing structure, smooth error, etc. As well as the reason. Grease lubrication of the method is simple, easy to roll the characteristics of easy to change, is widely applied. Should be according to the working temperature of rolling mill bearing, speed, rolling force and seal waterproof performance, and the size of the impact vibration, for fat method, and so on and so forth to choose appropriate grease. To use high temperature resistant, strong viscosity, good extreme pressure performance and water resistance of high normal manufacturer of grease. According to the features of rolling mill bearing should choose EP additives in 2 #, 3 #, lithium base grease or polyurea grease. Although high-performance grease procurement cost is high, but less dosage, INA bearing life is long, the overall comprehensive cost is decreased. Additional the filling quantity of the grease must right amount and fill in place, different type of grease can not mix, make rolling mill bearing working surface is always in a state of oil film is normal. Fill grease for the first time to fill the internal space of the cylindrical roller bearing, for vertical roll or diagonal roll each bearing grease cover up and down inside to fill enough quantity. To check whether the grease is hardening after each roll change black, whether the impurity contamination, whether oxidative emulsion. If the above condition should be thoroughly change the grease and check the seal and seal structure change in time or improve; If the condition is good can continue to use after added new grease. Oil-gas lubrication is the ideal lubrication bearing, bearing at work every once in a while internal compressed air with lubricating oil drops into the bearing, lubricating oil in internal INA bearing, heat away from the air bearing, at the same time to prevent water vapor into external impurities inside the cylindrical roller bearing. Oil has not been atomized will not pollute the environment.