INA bearing in use process because of its quality and the cause of the external conditions, its carrying capacity, revolving tolerance and wear resistance will change. When the performance index of the spherical bearing below use requirements and can not work normally, the bearing failed even failure, bearing once produce unexpected, such as failure, the machine, equipment will be stalled, appear function is lost and all kinds of abnormal phenomenon, so we need to find out the reasons in the short term, and take the appropriate action.

For the bearing under favorable conditions can keep the due performance and long-term use. Must check and maintenance of bearing, inspection and maintenance to prevent the fault is very important, in the works to check in on the rolling bearing sound, vibration, temperature and lubricant.

In high speed, high temperature, under the condition of the spherical bearing combination position and clearance adjustment scheme of grease lubrication has not timely can use oil lubrication. Through the cycle of lubricating oil, can take a lot of heat. Viscosity is an important characteristic of lubricating oil, the size of the viscosity of oil directly influence the liquidity and formed between the friction surface of the oil film thickness, INA bearing operating temperature lubricant viscosity is generally 12-15 CST. The GaoYingXuan speed low viscosity, the more heavy load rappel/abseil stations should be higher viscosity. Commonly used lubricating oil have JiXieYou, high speed JiXieYou, turbine oil, compression oil, transformer oil, cylinder oil etc.
Oil lubrication methods include:

A. bath lubrication oil
Oil bath lubrication is the most common lubrication method, suitable for low, medium speed bearings lubricated bearing part of the dip in the slot, by rotating bearing parts lubricant with on, and then come back to the oil tank face should be slightly lower than the minimum of the roller center.

B. drops of oil lubrication
Drops of oil lubrication is suitable for the need to supply quantitative lubricant to the sphere bearing parts consider supporting parts when thermal expansion bearing structure design, dripping oil amount general every 3-8 seconds a advisable, too much oil amount will cause bearing temperature increased.

C. circulating oil lubrication
Be filtered with oil pump oil conveying to bearing parts, through the bearing of the lubricating oil filter again after cooling after use. Due to circulation oil can take away a certain quantity of heat, make bearing cooling, reason this law is applicable to the INA high speed bearings components.

D. spray lubrication
The compressed air with dry by spray and lubricating oil mix formation oil mist, jet bearing, the air can effectively made the spherical bearing cooling and prevent the impurities invasion. This method is suitable for high speed, high temperature bearing parts lubrication.

E. jet lubrication
With oil pump will be high pressure oil through the nozzle to shoot to bearing, rolling bearing fatigue life of the basic formula calculating the INA bearing into the oil in the bearing the other end into the oil. In bearing high speed rotating, rolling body and maintains a also with very high rotation speed around to air form air, using general lubrication methods, it is hard to lubricating oil to bearing, then must use the method of high pressure jet will lubricating oil spray to bearing, nozzle should be put in the position of the inner circle and maintains a center between.

Bearing the reason of failure except the fatigue of the many normal outside of the failure of spalling as sealing, close to cooperate with small bearing clearance or poor lubrication factors can leave traces and the failure of the special failure form. So check the failure of the bearing can be found in most of the time in bearing the failure reasons of which take timely measures. In general INA bearing a third because of the failure of bearing has come to fatigue spalling period belongs to the normal failure; A third because bad lubrication lead to failure in advance because pollutants into the third bearing or not installed correctly and cause bearing failure in advance. Generally speaking the spherical bearing doesn't operate properly when seven kinds of common symptoms are as follows: bearing overheating, bearing noise, bearing life too low, vibration, can not reach the machine performance requirements, bearing on the shaft, shaft turning loose difficulties.




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