Classification of open gear lubricants

In the open gear lubrication process, the open gear surface has only a thin layer of cover film, they are often under boundary lubrication conditions. Because the new film or grease added to the open tooth surface is squeezed out due to the pressure of the open tooth surface, combined with the centrifugal force such as the open gear rotation, it can only leave a thin layer of lubrication on the tooth surface. Oil film. Considering the grinding cooperation of the open gear, the open gear lubricating oil must have good adhesion and viscosity temperature characteristics to ensure that a continuous layer of lubricating oil film is kept on the gear surface for low speed and heavy load operation. The tooth surface provides sufficient oil film thickness and is not easily washed away.
The operation characteristics of the open gear are low speed, heavy load and continuous operation, which causes the lubrication of the gear to be in the boundary lubrication state. Therefore, it has good extreme pressure performance and wear resistance to ensure the strength of the lubricating oil film. The main performance that gear lubricants must possess.
In addition, according to the characteristics of the open gear, the open gear lubricating oil should also have good rust resistance, oxidation resistance, low temperature pumpability and the like.
The open gear lubricating oil is divided into three types: ordinary open type wheel lubricating oil, extreme pressure open type gear lubricating oil, and solvent diluted open type gear lubricating oil.
Open gear lubricant products mainly include: asphaltene open gear lubricating oil, refined mineral lubricating oil, lubricating grease, synthetic open gear lubricating oil: grease, adhesive lubricating oil, etc.