The ETM instrument is ball-on-disc instrument for measuring the frictional properties of lubricated and unlubricated contacts under extreme pressures and a wide range of rolling and sliding conditions. Using high precision components, the ETM allows testing up to 3.5 GPa with standard specimens in a compact, controlled environment. All three regimes (boundary, mixed and EHL) can be replicated, whilst applying extreme load and realistic temperatures and speeds. The frictional properties of lubricants and additives can be analysed under realistic conditions for quick comparison between formulations.

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