Small antique rock crusher for sale. works of small portable rock crushers in small portable rock crushers are crushed rock between two jaws are carried out. movable jaw plate driven by a.Oct 05, 2021 While cone crushers are usually supported at the base, gyratory crushers are suspended. Impact crushers, sometimes called “hammer crushers,” use mass and velocity to break up pieces with a blow bar or hammer that strikes a stationary plate. When the rock hits the plate or anvil, it breaks on natural stress lines to create a uniform product.