Bearing grease is the grease used on the bearing. Its purpose is to form a thin oil film between the rolling surface and the sliding surface of the bearing to prevent direct metal-to-metal contact, thereby reducing internal friction and wear of the bearing and preventing burning and sticking. , the effect of grease on the bearing is as follows:
(1) Reduce friction and wear: in the ring that constitutes the bearing. The contact parts between the rolling elements and the cage prevent metal contact and reduce friction. wear.
(2) Extend the fatigue life: the rotational fatigue life of the bearing is extended when the rolling contact surface is well lubricated during rotation. Conversely, if the oil viscosity is low and the lubricating oil film thickness is not good, it will be shortened.
(3) Discharge frictional heat. Cooling: The circulating oil method can use oil to discharge the heat generated by friction or the heat from the outside to achieve the cooling effect. Prevent the bearing from overheating and prevent the aging of the lubricating oil itself.
(4) Others: It also prevents foreign objects from invading the inside of the bearing, or prevents rusting. Corrosive effect.
In order to give full play to the above functions, it is necessary to select the lubrication method and high-quality lubricant suitable for the use conditions, and design a suitable sealing device that can remove dust in the lubricant and prevent the intrusion of external foreign objects and lubricant leakage.
