Schwingung (Oscillating) Reibung (Friction) Verschleiz (Wear). A SRV machine is used to evaluate the friction and wear properties of liquid lubricants and lubricating greases in a variety of contacts. SRV tests measure interactions between a lubricant and two specimens in a loaded contact undergoing rotational or sliding oscillatory motion. Two of a number of standard tests that use an SRV machine are ASTM D5707 (friction and wear) and ASTM D5706 (step-wise EP).
