Coefficient of Friction Fixture (ASTM D1894), 10-32 UNF
Designed to measure the coefficient of friction (COF) to ASTM D1894, between two pieces of material.
The COF test determines the kinetic and static resistance of one surface being dragged across another.
This friction table can be mounted to the base of a motorized test stand and precisely leveled for optimum accuracy. The sled is connected via a fixing yarn to a test hook mounted onto the loadcell.
The bed has a clamping plate at the rear to hold the specimen material securely in place during the test. For additional stability, the specimen material may also be taped to the bed if required.
The sled is wrapped in a sponge rubber and designed to give the correct pressure between the two halves of the sample as defined by the relevant standard. Specimen material is fixed to the sled using conventional or double-sided adhesive tape.
A bi-directional spirit level and adjustable feet allow the bed to be leveled thereby ensuring that specimens are tested in a completely horizontal plane.
COF Fixture Comparison Table
| Model | Standard | Sled Dimensions | Sled Mass |
| 432-144 | ASTM D1894 | 63 x 63 mm / 2.5 x 2.5" (nominal) | 200g ± 5g |
| 432-501 | ISO 8295 | 63 x 63 mm / 2.5 x 2.5" (nominal) | 200g ± 2g |