Wear describes a multitude of material losses at the surface of solid bodies, which is caused by mechanical means and, as such, is a form of frictional wear.
In principle, wear can be differentiated in four key mechanisms:
An important form of wear in pump systems is cavitation, which is created by vapor bubbles in liquids.
In addition to the best possible extensive reduction of wear, design measures attempt to reduce the effects of unavoidable wear by carefully planning and designing wear parts. These can be replaced very easily in most cases.