Extreme Pressure in Gear Oil In gear oil, the type and concentration of extreme pressure additives will have an important impact on the performance of the gear. At the same time, gear oil can also clean away contaminants on the gear surface and maintain the stability and efficiency of gear transmission.
Extreme pressure additives are a very important ingredient in gear oils. Extreme pressure additives can form an extreme pressure film on the gear surface, thereby greatly improving the load-bearing capacity and wear resistance of the gear surface. It can form a layer of sulfide film on the surface of the gear. This film has the characteristics of high strength and high hardness, which can effectively improve the load-bearing capacity and wear resistance of the gear.
Extreme pressure additives in gear oils are compounds that provide enhanced protection against extreme pressure and high load conditions. These additives are necessary in gear oils because gear systems involve sliding motion, high loads, and high pressures, which can lead to increased friction, wear, and potential damage to the gears.
The most common types of extreme pressure additives in gear oils are:
Sulfur and phosphorus compound extreme pressure additives: Sulfur and phosphorus compound extreme pressure additives can form a sulfur and phosphorus compound film on the surface of the gear. This film also has the characteristics of high strength and high hardness, which can effectively improve the load-bearing capacity and wear resistance of the gear. These compounds react with metal surfaces under high pressure and temperature to form a protective film. The film acts as a barrier between sliding surfaces, reducing friction and wear.
Composite extreme pressure additive: Composite extreme pressure additive is a new type of extreme pressure additive developed in recent years. It combines the advantages of vulcanized extreme pressure additives and phosphating extreme pressure additives. It can not only form a high-strength, high-hardness film on the surface of the gear, improve the load-bearing capacity and wear resistance of the gear, but also effectively improve the resistance of the gear oil. Oxidation properties, extended gear oil
Chlorinated compounds: These additives contain chlorine atoms that react chemically with metal surfaces to form a protective layer that enhances the oil’s lubricating properties and reduces wear.
Polytetrafluoroethylene (PTFE): PTFE is a solid lubricant that is often used as an extreme pressure additive. It forms a thin film on metal surfaces, reducing friction and providing protection under high loads.
By incorporating these extreme pressure additives into gear oil formulations, the lubricant can withstand the harsh conditions encountered in gear systems and effectively reduce wear, improve performance and extend gear life.