This instrument is specifically designed for evaluating the load-bearing capacity of lubricants using the four-ball method, including parameters such as maximum non-greasing load (PB), welding load (PD), and comprehensive wear value (ZMZ). It also enables long-term wear resistance testing of lubricants, measuring the long-term wear D-value, friction force, and friction coefficient, while recording friction force and temperature curves.
Instrument testing complies with the following standards:
Ø ASTM D2266 Standard Test Method for Wear Preventive Characteristics of Lubricating Grease (Four-Ball Method)
Ø ASTM D2596 Standard Test Method for Measurement of Extreme-Pressure Properties of Lubricating Grease (Four-Ball Method)
Ø ASTM D2783 Standard Test Method for Measurement of Extreme-Pressure Properties of Lubricating Fluids (Four-Ball Method)
Ø ASTM D4172 Standard Test Method for Wear Preventive Characteristics of Lubricating Fluid (Four-Ball Method)
Ø ASTM D5183 Standard Test Method for Determination of the Coefficient of Friction of Lubricants Using the Four-Ball Wear Test Machine
Ø IP 239:2005 Methods of test for petroleum and its products —BS 2000-239: Determination of the extreme-pressure and anti-wear properties of fluids —Four ball method (European conditions)
Ø ISO 20623:2003 Petroleum and related products — Determination of the extreme-pressure and anti-wear properties of lubricants—Four-ball method