As a compression crusher, jaw crushers generally produce the coarsest material because they break the rock by the natural inherent lines of weakness. jaw crushers are an excellent primary crusher when used to prepare rock for subsequent processing stages. cone and gyratory.Businessindustry information. stone crusher. a stone crusher is a type of pulverizer that is used to compress or break apart a variety of large stone. stone crushers typically feature a large crushing rate and high yield, and while they may be used as primary crushers, they are also often used as secondary or tertiary.