Nandhi Secondary Crushers are of very sturdy construction weighing more than any other competitive model of same size.Body and jaw stock are stress relieved using modern resonant vibratory stress relief mechanism.The Pitman, toogle assembly,main bearing and shaft are all in constant oil bath and lubricated through a geared pump coupled to the shaft.This positive lubrication system coupled with double toggle mechanism ensures lift of bearings for years together.Since crushing is done by direct compression,the work hardening manganese steel jaw plates have a much longer life than other models of crusher.