The ASTM D7594-19 standard developed by the American Testing and Materials Association (ASTM) provides a test method for determining the lubricating effect of greases to prevent wear under linear oscillation with associated low strokes and high Hertz contact pressures under high frequency linear oscillating motion using the SRV testing machine. . By performing additional, non-mandatory extreme pressure tests according to the test method described in the ASTN D5706 standard, it should be demonstrated that the test grease can withstand a Hertz contact pressure of at least 2200 Mpa without adhesive failure.
This test method is used to determine the anti-wear properties and coefficient of friction of greases to prevent wear at selected temperatures and at specified loads for use in applications where induced, high-speed vibratory motions are present for extended periods of time.
This test method finds application as a screening test in ball and roller bearings, roller or ball screw (shaft) drives, or side shaft systems, for example for grease lubricants called constant velocity couplings. Users of this test method need to know whether the results relate to field performance or other applications.
Frictional wear is surface damage that occurs between two contacting surfaces during small amplitude cyclic motion (oscillatory displacement).
Low-amplitude movement prevents relubrication of the contact area, leading to significant localized wear. This type of wear can also cause two-body abrasion, sticking, or frictional fatigue.
When friction wear occurs in an abrasive environment, both the friction of the oxide films and the increased abrasiveness of the harder oxidized wear residues tend to accelerate wear considerably.
Among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, our organization, with its trained and expert staff and advanced technological equipment, uses high-frequency linear oscillation (SRV) test device within the scope of ASTM D7594-19 standard, providing high Hertz contact pressures. It also provides standard testing services to determine the friction wear resistance of lubricating greases under
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