Inertia Machine, a Freeport, Ill.-based manufacturer of screens and crushers, has introduced the 5066 Tracker mobile crusher designed for quarried stone and recycled asphalt and concrete. The new crusher has hydraulically driven tracks and a removable triple axle for ease of transportation. Additional features include a 14-cubic-yard non-heaping hopper and a 60-inch-by-18-foot vibrating grizzly feeder with a 4-foot grizzly section and variable speed drive. Also, the impactor has a feed opening measuring 42 inches by 64 inches. The machine also features a four bar rotor and remote clutch and track controls.