The HFN6 Bearing Friction Apparatus is technical teaching equipment used in educational institutes to demonstrate the fundamentals of frictional losses in bearings. It is sturdy wall-mounted equipment consisting of a flywheel 300mm diameter x 40mm thick on a horizontal steel shaft carried in a pair of interchangeable materials bearing. The teaching equipment allows students to perform various Inertia and energy transfer experiments. For example, it allows them to compare the frictional losses of bearings by measuring the coefficient of friction between materials. The trainer unit comprises full sets of weight and hangers required for experiments.