Traffic measurement within the scope of the friction materials is the so-called viscosity, in order to prevent the connection between the moving parts wear, NSK bearings must have enough lubricant viscosity, viscosity with temperature increase and decrease.
Quality of NSK bearing lubricating oil viscosity is an important physical and chemical properties of the assessment, the production, transportation and use, has very important significance.
NSK bearing lubricating oil viscosity of main technical indexes, NSK bearing lubricant viscosity but shall not exceed the influence degree of the engine starting, the vast majority of oil is based on the viscosity of NSK bearing brands, viscosity of all sorts of equipment selection is the main basis for oil.
Absolute viscosity measurement method is divided into two relative viscosity and viscosity of two categories.
Absolute viscosity can be divided into dynamic viscosity and kinematic viscosity of two;
Engler viscosity, relative viscosity, saybolt viscosity and viscosity of several representative ore.
The overuse of NSK bearing oil viscosity can increase the mechanical wear and tear, in practice, choosing appropriate viscosity of lubricating oil products, machinery and equipment, can guarantee the normal work and reliable.
Under normal circumstances, low speed and high load application, using the oil viscosity, in order to ensure adequate oil film thickness and normal lubrication;
High-speed low load applications, the use of smaller oil viscosity, in order to ensure the normal starting and running torque of machinery and equipment, engine oil viscosity is too large, slow-moving, arrogant, although the pressure of high oil prices, but by a small amount of oil, does not increase the friction surface, causing the smallest friction under continuous operation.
NSK bearing NSK bearings due to oil circulation is slow, the oil filter is small, it is difficult to bring down time, scrap metal, carbon particles, dust, and the friction surface cleaning.
Because the oil viscosity, in the operation of the mechanical friction between the friction surface, to overcome the friction intensified, more fuel consumption, also reduces the engine power output.
NSK bearing lubricant viscosity, oil circulating rate will slow the cooling and heat dissipation, easy to make the engine from overheating.
Temperature rise to a variety of working temperature, can form a film between the moving parts.
So don't use too much engine oil viscosity, viscosity can not be seen as the more the better.
In order to guarantee lubricating conditions, can be used as much as possible according to the temperature range when using low viscosity oil.
But more serious wear and tear, clearance has larger engine, can use oil viscosity larger appropriately.
