The bearing lubrication A, the action of bearing lubrication Lubrication on the fatigue life of rolling bearing, friction and wear, have important influences, such as temperature, vibration, no normal lubrication, bearing cannot work.Analyse the cause of the bearing damage shows that about 40% of the bearing damage is related to bad lubrication.Therefore, good lubrication of the bearing is an effective measure to reduce the bearing friction and wear.In addition, the bearing lubrication and cooling, sealing, prevent rust, moderate impact of a number of roles, the role of bearing lubrication can be illustrated briefly as follows:

A. in the contact between two rolling or sliding surface formed between a layer of oil film separates two surface, reduce the friction and wear of contact surface.

B. using oil lubrication, especially the circulating oil lubrication, oil mist lubrication and oil lubrication, the bearing lubricating oil take most of the internal friction heat, effective heat dissipation effect.

C. using grease lubrication, can prevent external dust and other foreign body into the bearings, sealing effect.

D. lubricant function to prevent corrosion of metal. E. extend the fatigue life of bearing.

Second, the comparison of grease lubrication and oil lubrication Bearing lubrication method is roughly divided into two kinds of grease lubrication and oil lubrication.In order to give full play to the function of the bearing, it is important to use according to the way and purpose, the lubrication method.Table 4-2 shows the advantages and disadvantages of grease lubrication and oil lubrication.