Produce INA imported bearing anomaly analysis and processing - bearing knowledge

The correct use of imported INA bearing is to extend bearing life assurance, using bearing must clearly understand how to correctly use bearing, due to the type of bearing, various models of different bearing type has its different functions, not a professional it is difficult to have in-depth knowledge of the bearing, the following is by Beijing derui bearing co. , LTD for you about common bearing use some matters needing attention. The real thing is released after INA imported bearing pressure into the bearing should be flexible rotation without block, such as have obvious rotation is not flexible, this means that the size of the shaft is too big. Such as bearing pressure into the shaft by hand after the rotation is sure there will be a slight shock feeling, may be the shaft or shaft roundness tolerance is too big. When control the shaft and the bearing chamber tolerance so also want to control the roundness, now our country the majority of manufacturers to control the tolerance is not only to control the roundness. Second, to prevent foreign body assembly INA imported bearing in loaded on the rotor dynamic balance when it is easy to dynamic balance of iron into the bearing inside, so it is best to install bearing before do dynamic balance. There are some manufacturers in order to convenient assembly, assembly in bearing indoor coated with some oil or grease lubrication effect, but usually operators good amount of it is hard to control, if oil or grease in the bearing interior storing up more, in the bearing rotates along axis to the bearing inside easily. Bearing chamber it is best not to apply oil or grease, if must apply to control shall not be storing up in bearing interior. Because the INA bearing is high precision products to be imported, such as improper assembly is easy to cause damage to bearing channel, result in bearing damage. When bearing assembly shall have a dedicated mold, not casually, only small circle when pressure into the shaft bearing pressure can force the circle circle. Require the use of pneumatic or hydraulic assembly, lower die when being connected to outside the level state, if there are any tilt can lead to bearing channel due to mechanical damage, and make the bearing guide ring. Paint a rusty happens at the time of sealing type motor assembly voice is normal, for long time the motor sound is very big, remove the bearing has serious rust phenomenon. Many manufacturers will think is a problem of bearing before, after our propaganda, motor factory now have realized mainly is a question of insulating varnish. Acid varnish comes out of the problem is mainly due to the formation of corrosive substances under certain temperature and humidity, the bearing channel after corrosion result in bearing damage. The problem is only is to choose good insulating paint, after drying in the assembly. INA is imported bearing's life and manufacture, bearing quality, assembly and use are closely linked, each link cannot pull down, all want to do, so as to ensure the bearing is in the best state operation, improve work efficiency, and extend the service life of bearing. Reason 1: abnormal load, countermeasures: correction, the INA imported bearing clearance, adjustment and load, fixed shell over the shoulder position. Reason 2: bad installation, countermeasures: machining precision of the axis, a hood, improvement of installation accuracy, installation method. Reason 3: lack of lubricant or doesn't fit, countermeasures: added lubricant, select the appropriate lubricant. Reason 4: rotating parts there is contact, countermeasures: modify the sealing contact part of the curved road. Rules reason 1: noise caused by foreign body rolling surface indentation, rust or scars, countermeasures: change the bearing, cleaning related parts, to improve the sealing device, use a clean lubricant. Reason 2: ( After carburizing steel) Surface deformation, countermeasures: change the bearing, pay attention to their use. Reason 3: the raceway surface stripping, countermeasures: change of INA import bearings. Random noise reason 1: the clearance is too large, countermeasures: research cooperation and bearing clearance, load changes. Reason 2: foreign invasion, countermeasure: the replacement of bearings, cleaning related parts, to improve the sealing device, the use of clean lubricant. Reason 3: spherical injury, stripping, countermeasures: change the INA bearing imports. Abnormal temperature rise reason 1: too much lubricant, countermeasures: reduce the lubricant, right amount used, select a hard grease. Reason 2: lack of lubricant or doesn't fit, countermeasures: added lubricant, select the appropriate lubricant. Reason 3: abnormal load, countermeasures: change to cooperate, the bearing clearance, adjust the preload, modify the shell over the shoulder position. Reason 4: bad installation, countermeasures: improve the machining precision and installation accuracy of shaft and the shell, installation method. Reason 5: cooperate with the creep, seal friction is too large, countermeasures: replace the import bearings, INA research coordination, modify the shaft and the shell, change the sealing form. Vibration ( Axis of jitter, Reason 1: After carburizing steel) The surface deformation, countermeasures: pay attention to the bearing replacement operation. Reason 2: stripping, countermeasures: change the bearing. Reason 3: bad installation, countermeasures: modify the axis, a hood over the shoulder Angle, pad side of the straight Angle. Reason 4: foreign invasion, countermeasures: change the bearing, cleaning all parts, to improve the sealing device, etc. Lubricant leakage is overmuch, discoloration reason: too much lubricant, foreign invasion, wear powder to produce foreign body, such as countermeasures: use appropriate lubricant, study change select lubricant, the INA imported bearing replacement, clean the shell.