The friction surface of lubricants can not only reduce the friction, wear, corrosion, not by the cooling effect, but also has a buffer, shock absorption capacity of lubricating oil film. How to choose the SKF bearings lubricants viscosity?
(1) the oil viscosity is the basic factors for the formation of lubricating oil film. In speed, load and temperature is not too high operating conditions, the medium viscosity lubricating oil. Under heavy load, low speed and high temperature conditions, the selection of high viscosity lubricating oil or add lubricating oil extreme pressure antiwear agent. At low load, high speed and low temperature conditions, using low viscosity lubricating oil.
(2) in a wide temperature range, light load and high speed condition, and other special requirements, the selection of synthetic lubricating oil.
(3) internal combustion engine oil as an example, selects the appropriate viscosity and high viscosity index, so that oil has high viscosity enough to ensure that the engine lubrication in operation and sealing, but also at low temperature is small enough to ensure the viscosity - temperature startup performance. The viscosity of the choice is usually according to temperature conditions, but also to consider the factors of load level, speed or engine wear etc..