Definition: Grease anti-wear performance refers to the ability of grease to prevent wear on lubricated components in high-load operating equipment.

① For metal machinery, due to the relative motion of metal surfaces, friction causes metal to separate and peel off from the surface, resulting in a loss of weight or changes in the volume and dimensions of metal components. This change is called wear.

② Adding grease between contacting metal surfaces can reduce surface wear.

③ The anti-wear performance of grease can be measured using a four-ball testing machine, which determines the degree of wear resistance, anti-wear performance, and load-carrying capacity under different pressure conditions.

④ PB Maximum Non-Seizure Load (Oil Film Strength)
PD Welding Load (Extreme Working Load)
Wear Scar Diameter

? Test Standard: SH/T 0202 “Test Method for Extreme Pressure Properties of Grease – Four-Ball Machine Method”, Equivalent Method: ASTM-D2596