New versatile, powerful J4 jaw crusher from McCloskey for hard rock applications

The J4 jaw crusher from McCloskey is safe, versatile, mobile and suited for hard rock conditions. Credit: McCloskey International

McCloskey International has unveiled the new J4 jaw crusher, boasting powerful new features for hard rock applications.

The J4 builds on the robust features of the existing design, while adding new productivity with an exciting line-up of features and options aimed at boosting productivity and offering enhanced durability for every application.

Designed to withstand the toughest conditions worldwide, the J4 delivers high production due to its innovative jaw chamber design and enhanced material flow. The large 1,060 mm x 700 mm jaw opening accommodates large feed sizes, contributing to higher production in material processing.

The material path is enhanced with the 1,064 mm x 4,247 mm grizzly pan feeder under the hopper that allows for better sizing of material with a variety of mesh options. Options of either a short pan feeder or a double deck grizzly pre-screen are available, ensuring better sizing of material based on the required end product.

The J4 leads its class in size and number of decks offering a choice of either a two deck or one and a half deck system. The two deck delivers an extra product spec over the mid-size product conveyor. The J4 is the only jaw crusher that offers oversize recirculation for a higher end product specification, says the manufacturer.

The J4 also delivers industry-leading stockpiling, with wide main and side conveyors for enhanced material flow. The angle adjustable 1,200-mm-wide ToughFlex main conveyor boasts a 3.9-metre-high stockpile. With quick release and ground level access, the belt is easy to maintain and service.

ToughFlex is constructed with a special weave of two fabric plies and an additional binder warp (without the need for steel wire) resulting in reduced belt weight. The plies are reinforced to resist puncturing and are protected with heavy duty wear resistant top and bottom covers. At the end of it’s lifespan, ToughFlex belts can be easily recycled unlike belts reinforced with a metal ply.

While a side conveyor remains an option for many jaw crushers in its class, the J4’s integral folding conveyor is standard and has an 650 mm adjustable speed belt fueling a stockpile height of 3.4 metres. In addition, the recirculation conveyor can be rotated 90° to be used as a stockpiling conveyor.

As with all McCloskey equipment, safety is paramount, and the J4 is equipped with a number of features to ensure the workplace and the operator are secure. Engine safety shutdown systems, start-up alarms, full safety guarding, external maintenance access and a tagout capability on the isolator all contribute to the safe operation and maintenance of the equipment. Ground level access also promotes safety, and allows for quick service and maintenance, reducing the downtime for the operation.

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