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New addition to McCloskey jaw crusher range

McCloskey J4 jaw crusher
New J4 jaw crusher has been designed for versatility and high production

Latest J4 mobile crusher boasts new design features and options for hard rock applications

McCLOSKEY International have unveiled their new J4 jaw crusher, which builds on the robust features of the existing design, whilst adding a host of innovative design features and new options aimed at boosting productivity and offering enhanced durability in multiple applications.

Designed to withstand the toughest conditions in hard rock quarries, the J4 machine delivers high production, thanks to a large 1,060mm x 700mm (42in x 28in) jaw opening that accepts bigger feed sizes, contributing to enhanced material flow and productivity in materials processing. 


The material path is further improved with a 1,064mm x 4,247mm (41.9in x 167.2in) grizzly pan feeder under the hopper that ensures better sizing of material with a variety of mesh options. Options such as a short pan feeder to suit the pre-screen or a double-deck grizzly pre-screen are also available, delivering suitability and better sizing of material based on the required end-product.

The J4 jaw crusher offers a choice of either a two-deck system or one-and-a-half-deck unit. The two-deck option delivers an extra product spec over the mid-size product conveyor.

According to McCloskey, the J4 is the only jaw crusher that offers oversize recirculation for a higher end-product specification. The J4 is also said to deliver industry-leading stockpiling, with wide main and side conveyors for enhanced material flow.

The angle adjustable 48in wide ToughFlex main conveyor offers a 3,912m high stockpile. It features quick release and ground level access, so that the belt is easy to maintain and service. ToughFlex is constructed with a special weave of 2 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 their 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 comes with an integral folding conveyor as standard. It is equipped with a 26in adjustable sped belt offering a stockpile height of 3.44m. In addition, a recirculation conveyor can be rotated 90° for use as a stockpiling conveyor.

As with all McCloskey equipment, safety is paramount and the J4 is equipped with several features to ensure the working environment 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 jaw crusher. Ground level access provides improved safety, allowing for quick service and maintenance whilst reducing machine downtime.

‘The J4 continues the momentum for our jaw crushing product range, as we continue to develop new products that meet the evolving needs of our customers across industries,’ said Toni Laaksonen, senior vice-president of McCloskey International.

‘We have always designed our equipment to ensure it contributes to the productivity and business success of these operations. As a company that is involved in the handling and processing of the earth’s resources, we also have our sights set on sustainability. Our next commitment to an environmentally responsible strategy will be the introduction of our electric crushers, scheduled to be available in 2023.’


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