Pin-on-Disk (ASTMG99)

Pin-on-Disk operates on the following principle: a flat, pin or ball is loaded onto a test sample with a precisely known weight and at a specific position from the center to create a circular wear track as the bottom plate rotates. The friction coefficient is determined during the test by measuring the deflection of the direct load cell. Wear rates for the pin and the disk are calculated from the volume of material lost during the test.