• Compliant to ASTM G10 and B611
• Preset Revolution Counter
• Variable Speed
• Normal Load Calibration
• Frictional Force Measurement

The Koehler K92800 test rig is designed such that a standard specimen is pressed against a rubber wheel with a known force. The test area is submerged in wet abrasive slurry. The wheel carries grip particles across the contact face in the direction of wheel rotation. A durometer hardness of 50, 60, and 70 with a hardness tolerance of ±2.0 is used. A run-in is conducted with the 50 durometer wheel followed by the test with the 50, 60 and 70 durometer wheels in order of increasing hardness. Specimens are weighed before and after each run and the loss in mass is recorded. The logarithms of mass loss are plotted as a function of measured rubber wheel hardness and a test value is determined from a least square line as the mass loss at 60.0 durometer. It is important to convert the mass loss to volume loss, due to wide differences in density of materials, in order to obtain a ranking of materials. Abrasion is then reported as volume loss in cubic millimeters.

• Slurry Tank
• Slurry Connection Container
• Loading arm with lifting cam and easily changeable dead weights
• Neoprene rubber wheels

Conforms to the specifications of: 

ASTM G105, B611

Abrasive Slurry: Mixture of alumina (1.5kg) and water (0.94kg)

Wheel Speed: 100 to 250 rpm continuously variable

Test Load:

G105: 100 N to 30 0N
B611: 100 N to 200 N

Wheel Diameter:

G105: 178 mm x 12.7 mm
B611: 169 mm x 12.7 mm

Neoprene Rubber Wheel Shore Hardness: 50, 60, and 70 ±2

Revolution Controller: Microprocessor based digital preset counter 1 rev to 9999 revs

440V, 50Hz, 15A, 3 Phase

• K92800-1 Test Wheel, 7” dia, 68-71 Shore A
• K92800-2 Test Wheel, 7” dia, 58-61 Shore A
• K92800-3 Test Wheel, 7” dia, 48-52 Shore A
• K92800-4 Wheel Dressing Tool K92800-5 Replacement Nozzle

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