The lubricating oil of the reducer will be produced under the intense stirring during the gear movement.

The reducer lubricating oil will produce many small bubbles under the intense stirring during the gear movement.If the small bubbles disappear quickly, it will not affect the use.If the stable foam is formed and no longer disappears and emulsification and deterioration occur, overflow will occur on the tooth surface, destroy the lubricating oil film, and aggravate the wear.

The selection principle of reducer lubricating oil The primary factor in the selection of reducer lubricating oil is viscosity.Viscosity is a very important physical and chemical index of gear oil, and the meshing speed of gear is the main index for selecting viscosity.Appropriate reducer gear oil viscosity can make the internal friction of lubricating oil small, resulting in greatly reduced gear surface wear and transmission noise and vibration.

The viscosity of the reducer lubricating oil is mainly achieved by the base oil and the viscosity index improver.The viscosity of lubricating base oil is related to molecular structure and molecular weight: the larger the average molecular weight, the greater the viscosity of the oil.As far as base oils are concerned, mineral oil-based lubricating oils include three types of lubricating oils refined from paraffin-based crude oils, lubricating oils refined from naphthenic crude oils, and lubricating oils refined from intermediate-based crude oils.The lubricating oil made from paraffin-based crude oil has better viscosity-temperature performance than the other two.A good viscosity index agent not only requires high viscosity increasing ability and good shear stability, but also requires good low temperature performance and thermal oxidation stability.