Ways to Reduce Friction
Friction has to be reduced to prevent damage to surfaces, machine parts and so on. Friction can be reduced by using ball bearings, rollers/ wheels, air cushion, lubricating oil, wax and grease. The lubricating oil, wax and grease hold the surfaces apart, can flow between them and hence reduce friction, Lubrication is used not only to allow parts to move easier but also to prevent them from wearing out.