Import bearings rolling in the motion of the resistance to wear constantly because of bearing and failure, grease (oil) and the different ways of lubrication, the low bearing friction and wear different effect. So the lubrication technology has become bearing an integral part of the study of technology. Someone put grease (oil) called "bearing the fifth part" (the other for inner ring and outer, rolling body, keep frame).

Hinder the resistance of the rolling bearing rotation by rolling friction, sliding friction and lubricant of friction. When rolling on the body will have the rolling friction; Sliding friction appeared in maintains a roll of the body surface, keep the frame of the guide roller bearing and raised edge on the guide of face and rings on raised edge roller. While the lubricant in lubricant friction of the contact point internal friction and lubricant mixing and squeezed together. A set of friction that is always bearing rolling friction, sliding friction and lubricant friction is the sum total of the resistance of the movement is impedance bearing. The task of lubrication technology research is to develop different (oil) and grease lubrication method, make its bearing the least resistance, the longest life expectancy.

NSK bearing the domestic and foreign development trend

Foreign advanced industrial countries, to the common conditions bearing grease (oil), technology and production has been completely pass, has formed series varieties and batch production capacity, the main trend is research to improve some special circumstances grease characteristics, such as is research to improve the space with the grease of vacuum stability fluorine ether, climb and sticky temperature performance of move; And as low fat, although in the applications have better effect, but the lubrication mechanism fail to have a good theory in this paper. Be like again, study in high temperature (200-4000 C) use lubricant gaseous under study, etc. NTN bearing the current lubrication research task very heavy, if funds allow, solutions should focus on the following problems: firstly, improving existing seal bearing grease in normal temperature environment of service life; Second, improve low noise vibration performance bearing greases; Third, the research and development of new varieties under the condition of common bearing greases, fill the domestic blank.

SKF bearing the main research contents and goals

According to our country bearing greases and foreign gap, the next 10 years of research contents and target grease is: research to improve the way of life of grease, home appliance with sealed bearings (such as washing machines, vacuum cleaners, computer, air conditioner, etc) and difficult for repair or remove the operation precision constitute a failure of the site sealed bearings (" INA "bearing precision machine tool spindle, precision instrument shaft and deep water homework mechanical drive system, etc), the grease used mechanical life equal to life; The grease of noise, low noise bearing (v3 / z3, v4 / z4) made noise reduction value of 3-5 dB above; Research and development 15-20 new varieties of grease, form our country bearing greases series of basic pattern. High temperature, normal temperature, low temperature, about 8-10 varieties, general medium or extremely high levels of motor bearing greases 5-8 varieties of aviation and navigation and special conditions such as bearing grease 5-8 varieties. Sealing technology

FAG bearing technology overview

Recent development of rolling bearing, in two end DouAn equipped with corresponding sealing device. Its role is to protect the bearing on one hand the grease inside the (oil) in use won't run, ensure bearing in lubricating state; On the other hand is to protect the bearing, makes outside dust or harmful gas bearing not into the inner chamber, in order to avoid damage of bearing. IKO bearing common are rubber or engineering plastics sealing ring, also have made of steel plate blunt sealing ring (or said that dust cover). Sealing structure is varied, the effect of the seal. Sealing and bearing a gap between the, says non-contact seal, the gap is smaller, seal the better, but allow shaft speed the smaller area; Sealing and bearing no gap between the, says contact seal, sealing ring contact of the lip contact area, the greater the sealing the better, but allowed the speed of the shaft and smaller. Sealing technology research and development is mainly applied in different working conditions corresponding sealing devices, and the sealing ring material and the corresponding the grease of harmony.
 



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