The lubrication methods of cylindrical roller bearings are grease lubrication and oil lubrication respectively. In order to give full play to the function of the bearing, first of all, we should choose the lubrication method suitable for the use conditions and purposes. If only lubrication is considered, the lubricity of oil lubrication is dominant. However, grease lubrication has the advantage of simplifying the structure around the bearing.
Purpose of lubrication:
The lubrication purpose of rolling bearing is to reduce the internal friction and wear of bearing and prevent burning and sticking. Its lubrication effect is as follows:
1) Reduce friction and wear
In the contact parts of the rings, rolling elements and cages that constitute the bearings, metal contact is prevented and friction and wear are reduced.
2) Extend fatigue life
The fatigue life of the rolling element of the bearing is prolonged if the rolling contact surface is well lubricated during rotation. On the contrary, if the oil viscosity is low and the lubricating oil film thickness is not good, it will be shortened.
3) Eliminate friction heat and cooling
The circulating oil feeding method can use oil to discharge the heat generated by friction or the heat transmitted from the outside to play a cooling role. Prevent the bearing from overheating and the lubricating oil from aging.
4) Others
It also has the effect of preventing foreign matters from invading the interior of the bearing, or preventing rust and corrosion.
