(A) the role of the bearing lubrication

Lubrication on the fatigue life of rolling bearings and friction, wear, temperature, vibration, etc have a major impact, not the normal lubrication, bearings will not work. Cause bearing damage analysis showed that 40% of the bearing damage related with poor lubrication. Therefore, a good bearing lubrication is to reduce the bearing friction and wear of effective measures. In addition, there are bearing lubrication heat, anti- rust, sealing, ease the impact of a variety of roles, the role of the bearing lubrication can be briefly described as follows:

a. In the second rolling surface contact with each other or sliding surfaces formed between the two surfaces separated by a layer of film, reducing friction and wear of contact surfaces.

b. the use of oil lubrication, especially the use of circulating oil lubrication, oil mist lubrication and fuel injection lubrication, the lubricating oil inside the bearing can take away most of the friction heat, serve as an effective heat sink.

c. the use of grease lubrication prevents external dust and other foreign matter into the bearing, closed role play.

d. lubricants to prevent metal corrosion have a role.

e. extend the fatigue life of bearings.

(B) The grease and oil lubrication comparison

bearing lubrication methods can be divided into two kinds of grease and oil lubrication. In order to give full play to the bearing function, it is important to use reduced according to the purpose and use, the use of lubrication method. Table 4-2 shows the grease and oil lubrication of the advantages and disadvantages.



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