This newly-developed machine is simple yet powerful and boasts a crushing capacity of 140 to 460 tonnes per hour. Its KCJ4430 jaw crusher offers the greatest treatment capacity in its class, plus easy maintenance. Komatsu’s original bear lock cylinder mechanism allows you to change the discharge clearance with a simple one-touch adjustment and facilitates the removal of clogged foreign material from the discharge side. Outstandingly mobile, its hydraulic steering and high-travelling speed make it easy to relocate. The BR580JG-1 has the same track undercarriage as those used on Komatsu’s hydraulic excavators. Its 2,625 mm × 4,400 mm hopper is accessible for material loading from three sides.