There are many kinds  brands of lubricating grease  a wide range of places of use. In order to  lubricating grease, it is necessary to understand  only the characteristics of various lubricating greases, but also the task conditions (temperature, load, speed, contact medium, etc.) of the application parts, the smooth way, the grease change cycle, etc. As long as the characteristics of the grease are suitable for the place of use, it can give full play to the superior performance of the grease  get good application effect.

The following achievements should be considered when selecting lubricating grease:     

一. Consider the purpose of using grease (antifriction, protection, sealing) 

1.Antifriction grease should consider the range of high  low temperature resistance, the boundary of speed resistance, the size of load, lubricating machinery, etc.

2. For the protective grease, it is necessary to consider whether the contact medium is water gas  chemical gas, as well as the protection  oxidation resistance of metal.

3. For the sealing grease, it is necessary to consider the contact seal information, whether it is rubber  plastic, what type of rubber  plastic it is,   the appropriate grease according to the compatibility between the grease  rubber. For static seal  dynamic seal,  a thicker sealing grease for static seal,   a grease whose viscosity of base oil cannot be too large for dynamic seal.     

二. Considering the working temperature of the smooth part is an important basis for selecting lubricating grease. Factors such as increasing load, slowing down speed, reducing ambient temperature, too full lubricating grease,  temporary tasks will reduce bearing temperature. Considering the temperature resistance performance of lubricating grease,  only the drop point of lubricating grease, but also the type of base oil, anti-oxidation function, evaporation function, etc.  

三. It is considered that the load grease in the smooth part of the grease can meet the requirements of the extrusion anti-wear performance by adding the appropriate extreme pressure anti-wear additive. 

四.considering the speed of the smooth part of the grease has a great influence on the bearing life of the grease. For rolling cylindrical roller bearing with inner diameter less than 50mm, when DN value is less than 300000  inner diameter more than 50mm, when DN value is less than, lubricating grease shall be used to smooth. For tapered  roller bearings with an inner diameter of more than 50mm, when DN value is less than, lubricating grease shall be used for smoothing. 

五.Considering the environment of the smooth part  the contact medium, the environment of the smooth part  the contact medium have a great influence on the function of the grease, so it should be considered carefully. Urea grease should be selected for water resistance; lithium grease  compound calcium, compound aluminum  bentonite grease should  be selected for the parts contacting with acid  acid gas. These greases will be diluted  lost when encountering acid, forming poor protection  bearing corrosion. Urea based grease  complex barium based grease shall be selected. 

六.Consider the filling methods of lubricating grease, including manual filling  pump centralized filling. VII.  the perspective of economy, consider whether the grease can extend the grease change cycle, increase the filling times  consumption of grease, increase the consumption of bearing consumption, maintenance costs  the consumption loss caused by resumption of work. There are many examples of using primary grease to improve comprehensive economic benefits.