Gear oil is a kind of high viscosity lubricating oil, which is specially used to protect transmission power parts. It is usually accompanied by a strong sulfur smell. What are the functions of automotive gear oil? Let's take a look.
The lubricating oil used for automobile manual transmission, rear axle main reducer and differential is usually called gear oil.
The important role of automobile gear oil is to form an oil film or a solid adsorption film and chemical reaction film on the tooth contact surface of the gear to ensure normal lubrication and prevent adhesion between the tooth surfaces.
The form of lubricating oil film on automobile gears is significantly different with different engagement modes. It is easy to form lubricating oil film on the tooth surface of spur, helical and spiral bevel gears. The hyperbolic gear is one of the friction pairs that is difficult to lubricate because of its small volume, large power transmission, high relative sliding speed of the tooth surface, and difficult to form lubricating oil film on the tooth surface.