How to Select Gear Oil?

Gear oil mainly refers to the lubricating oil used in transmissions and rear axles. It differs from engine oil in terms of usage conditions, composition, and performance. Gear oil plays a crucial role in lubricating gears and bearings, preventing wear and corrosion, and assisting in gear heat dissipation. There are two main types of gear oil: automotive gear oil and industrial gear oil. The former is used to lubricate various manual transmissions and gear-driven axles in automobiles, while the latter is used in lubricating gear systems in various industries such as metallurgy, coal mining, cement production, and chemical engineering.

Automotive gear oil

Automotive gear oil is used in gear transmission systems such as power steering, transmissions, and drive axles in vehicles. Due to the high surface pressure during gear transmission, gear oil plays a crucial role in lubricating gears, preventing wear, cooling, heat dissipation, corrosion and rust prevention, cleaning, as well as reducing surface impact and noise on the gears.

American Petroleum Institute (API) vehicle gear oil performance classification

Industrial gear oil

Industrial gear oil classification

Six Key Performance Characteristics of Gear Oil

Gear oil is generally required to possess the following six basic performance characteristics:

1. Appropriate viscosity and excellent viscosity-temperature behavior
2. Adequate extreme pressure and anti-wear properties
3. Good emulsion resistance
4. Excellent oxidation stability and thermal stability
5. Good foam resistance
6. Effective rust and corrosion prevention

Choosing a suitable gear oil is essential to provide optimal protection for gears and extend the lifespan of machinery.

Thank you for reading this article, and we look forward to serving you with our exceptional gear solutions.