- Pin on disc tribometer
A pin on disc tribometer is the standard equipment used to determine the sliding
friction coefficientand wearresistance of surfaces. The tester consists of a stationary "pin" under an applied load in contact with a rotating disc.
Either the pin or the disc can be wear- and friction-tested using the pin on disc tester. The pin is usually a sphere however it may be any geometry that simulates the actual application counter surface. [cite web
A load cell attached to the pin on disc tester is used to measure the evolution of the friction coefficient with sliding distance. [cite web
title=K93500 Pin-On-Disc Tester
accessdate=2008-01-09] Sliding wear of the disc can be measured after the pin on disc test using a simple piece of equipment called a
The pin on disc test has proved particularly useful in providing a simple
wearand frictiontest for low friction coatingson machine components, such as the valve train, particularly in motor sports. These components are now coated with low friction coatingssuch as diamond-like carbonto reduce energylosses and the requirement for lubricant.
Scratch tester, coating adhesion tester
Calo tester, coating thickness tester
* [http://www.pvd-coatings.co.uk/pin-on-disc-tester.htm Pin on disc tester]
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