How to choose the lubricating oil viscosity of the reducer

Viscosity is an important physical and chemical index of gear oil. The correct choice of the viscosity of gear oil will reduce the internal friction of the lubricating oil, thereby reducing the wear of the gear surface of the reducer and the transmission noise and vibration. What is the appropriate viscosity?This problem still plagues many users. Let's introduce it to us by the reducer manufacturer!

1. The viscosity of the lubricating oil of the reducer is mainly achieved by the base oil and the viscosity index improver. The viscosity of the base oil is related to the molecular structure and molecular weight. The larger the average molecular weight, the greater the viscosity of the oil.

2. A good viscosity index agent should have high viscosity increasing ability, good shear stability, good low temperature performance and thermal oxidation stability.

3. For lubricating oils of the same viscosity grades, if unrefined base oils and less good viscosity indexing agents are selected, although a certain viscosity standard can be achieved after deployment, the properties such as viscosity-temperature and shear stability are not sufficient. good, but also can not achieve the due life cycle.

In actual production, we can choose the lubricating oil viscosity of the reducer according to the above method. For the low-speed and heavy-load reducer, we should choose a better lubricating oil, and try to avoid the use of unrefined base oil or poor viscosity index agent. Because its base oil and viscosity index agent are better, the higher the viscosity of the gear oil, the stronger the protection ability of the textile tooth surface from various damages, and the smaller the mechanical wear.