The machine is used to evaluate the loading capacity of lubricants in the process of sliding friction on a contact
point under very high pressure. The above mentioned capacity including 3 datas to be tested: The maximum
load Pb under the unstuck condition, sintered load Pd and comprehensive value of wearing during friction ZMZ.
This machine conforms to ASTM D2783 Standard Test Method for Measurement of Extreme-Pressure Properties of
Lubricating Fluids (Four-Ball Method).