• Generally, a tribometer is an instrument that measures tribological quantities, like coefficient of friction, friction force & wear volume, between two surfaces in contact.
• Further, Bearings are one of the critical element in electric motors.
• Failure analysis of conventional bearings used in traction motors revealed the appearance of morphological damages to raceway surfaces and quicker lubricant degradation. The damages to surface is consistent with surfaces subjected to electro-discharge machining.
• The prior arts do not discuss a method for measuring the tribological quantities in electromechanically loaded contacts. Hence, there is a need to introduce an improved device to mitigate above challenges & provide efficient solution.

1. Present invention describes an apparatus for measurement of a plurality of tribological quantities of an electromechanically loaded contact between a disc sample and a test sample
2. Said apparatus comprises of

• A disc sample holder for accommodating the disc sample and, sample holder coupled with a motor drive configured to rotate at a predetermined speed;
• A test sample holder for accommodating the test sample, the test sample holder coupled with a linear actuator, through a lever-arm assembly to enable movement of the test sample over a surface of the disc sample, the test sample holder comprising an insulating support attached to the lever-arm assembly configured to prevent grounding of electric current from the test sample holder;

-> the lever-arm assembly comprises a plurality of sensors mounted thereon for detecting the plurality of tribological quantities.