PRE-LOAD WAVED WASHERS A = Outside diameter when flat B = Inside diameter when flat C = Free height of washer ( approx ) S = Material thickness H1 = Height at which specified load achieved ( see table ) For pre-loading bearings in electric motors. The waved washer is installed in the bearing housing and works by maintaining a force on the outer race of the ball bearing, ensuring smooth and quiet running which results in extended life. EPL AND EMO-X PRE-LOAD WAVED WASHER SERIES_ Development in liaison with bearing and electric motor manufacturers on the optimum loading characteristics required. The basic EPL range has been supplemented with the EMO-X range of waved washers since designers have found in some circumstances even better results can be obtained with more pressure on the outer ring of the bearing. All the waved washers are supplied in self colour high carbon spring steel. Other materials can be used on request ( Stainless Steel , Beryllium Copper, etc). Please contact our Sales department for further details.