How to choose the lubricating oil viscosity of the reducer

Before using the reducer, we usually inject a certain amount of lubricating oil into the machine.Injected lubricating oils have very strict requirements on viscosity.Therefore, viscosity is an important physical and chemical index of gear oil.The viscosity of the oil is chosen correctly., it will reduce the internal friction of the lubricating oil, thereby reducing the wear on the gear surface of the reducer and the transmission noise, vibration, etc.So, what is the proper viscosity of lubricating oil?The reducer manufacturer introduced the following to us.

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

2. A good viscous agent should have high tackifying ability, good shear stability, good low temperature performance and thermo-oxidative stability.

3. For lubricating oils of the same viscosity grade, if you choose unrefined base oil and not very good viscosity index agent, although you can reach a certain viscosity standard after mixing, but the viscosity-temperature, shear stability and other properties are poor, the same Unable to achieve expected lifetime.

In actual production, the lubricating oil viscosity of the reducer can be selected according to the above method.For low-speed and heavy-duty reducers, high-quality high-grade lubricating oil should be selected, and unrefined base oil or poor viscous agent should be avoided as much as possible, because the better the base oil and viscous agent, the greater the viscosity of the gear oil. The stronger the abrasiveness, the less damage it will cause to the tooth surface, and the smaller the mechanical wear.