This Astec Ranger J20 is a used crusher — sometimes referred to as a jaw crusher or rock crusher — designed for quarry operations where hard, abrasive material must be broken down into sized aggregate. Astec is a well-established manufacturer of infrastructure and construction equipment, with a broad portfolio spanning road building, aggregate processing, and material handling machinery serving mining, quarrying, and construction industries worldwide.
The machine is a track-mounted jaw crusher configured with a closed-circuit screen module, making it a self-contained, mobile processing plant capable of crushing, screening, and recirculating oversize material in a single pass. The crushing unit itself is a 20-inch by 34-inch jaw crusher fitted with hydraulic wedge adjustment, allowing the closed-side setting to be changed quickly and precisely without manual intervention.
Feed material is delivered to the jaw via a 32-foot by 12-foot vibrating grizzly feeder, which pre-screens fines and directs suitably sized material into the crushing chamber. A 36-inch under-crusher conveyor with hydraulic drive carries crushed product away from the jaw; an impact bed is positioned directly beneath the crusher to absorb the loading forces and protect the conveyor structure. A self-cleaning permanent cross-belt magnet is installed to extract ferrous metal contamination from the product stream before it reaches the screen.
The closed-circuit screen module houses a single-deck incline screen measuring 44 inches wide by 10 feet 5 inches long. Oversize material rejected by the screen deck is returned to the crusher feed for reprocessing, while on-spec product passes through to stockpile. A dust suppression system is fitted to manage airborne particulates across the plant, and wireless track remote control allows the operator to reposition the machine safely without being tethered to a cab.
Power is provided by a Caterpillar C4.4 diesel engine rated at 173 horsepower and certified to Tier IVF emissions standards. The onboard fuel tank holds 52 gallons. This unit is located in Utah, USA, and is offered at $395,000.
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