Through our network of 26,000 people in 1,000 laboratories and offices in 100 countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Learn more...
A career with Intertek offers rewarding opportunities to help companies around the world develop products that are used safely by millions of people every day. Learn more...
Automatic transmission wear tests include a range of capabilities:
Vickers Wear (ASTM D2882 modified)
The three major OEM transmission fluid specifications include a modified version of the ASTM D2882 Vane Pump Wear test. The test is run at 6.9 MPa (1000 psi) for 100 hours. Fluid temperature is maintained at 80oC (175oF). Weights of the pump vanes and outer cam ring are measured before and after test to determine the amount of wear.
DEXRON®-VI Sprag Clutch Overrunning Wear Test (SCOWT)
The SCOWT is an OEM designed test to evaluate a fluid's anti-wear properties using a transmission one-way roller clutch. The clutch is mounted between two opposing rotation motors, which create a differential rotating speed of 16,800 rpm, and run for one hour. Weight loss of the inner race of sprag clutch is used to determine amount of wear.
Four-Ball Wear (ASTM D4172)
A modified version of this standard test is used to evaluate ATF for MERCON®. Three steel balls are clamed together and covered with the lubricant to be evaluated. A forth ball is pressed against the top of the others at a specified force of 40 Kg making a 3 point contact. The temperature is regulated at 100°C and the top ball is rotated at 600 rpm for 2 hours. Additionally the test is run at 150°C. The wear scars generated on the lower 3 balls are evaluated for size to determine relative lubricant performance.
Ford One-Way Clutch Wear
The OWC test is a test developed by Ford for the MERCON® specifications, which is similar to the SCOWT. A one-way roller clutch is used to measure a fluid's wear resistance by evaluating the wear damage of the inner race. The evaluation is both a visual inspection and weight loss.
Contact us to see how Intertek can help your organization with Automatic Transmission Wear Testing.
