How to choose the viscosity of lubricating oil for small reducer?

Lubricant viscosity is an industry term. With the increase of viscosity, the thicker the oil film between the friction surfaces of the moving parts, the stronger the protection of the friction surface. What are the methods for selecting the viscosity of lubricating oil for small reducer? Let's see the following points.

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

2. A good adhesive should have strong tackifying ability, good shear stability, and good low-temperature performance and thermal oxidation stability.

3. For the lubricating oil of the same brand with viscosity, if the non-refined base oil and viscosity agent are selected, although the viscosity standard can be reached after blending, the viscosity-temperature property, shear stability and other properties are poor, and the specified service life can not be reached.

In actual production, the viscosity of lubricating oil for small reducers can be selected according to the above methods. For low-speed and heavy-load reducers, better lubricating oil should be selected, and non-refined base oil or poor adhesive should be avoided as far as possible. Because both base oil and adhesive are better, the greater the viscosity of gear oil, the stronger the protection ability against various damages, and the smaller the wear of the machine.