Crushers | Rokbro Jaw Crushers | Rokbro // McCloskey J6 Jaw Crusher | Rokbro Equipment NZ

McCloskey J6 Jaw Crusher | Rokbro Equipment NZ

Details
The large 48” x 34” (1200mm x 864mm) jaw opening accommodates large feed sizes, also contributing to higher production in material processing. The material path is enhanced with the adjustable speed 1204mm x 2360mm (47.4” x 7’ – 8.8”) double deck grizzly prescreen under the hopper that, along with the variable speed panfeeder, allows for better sizing of material with a variety of mesh options.

McCloskey J6 Jaw Crusher Overview

The McCloskey J6 Jaw Crusher is designed for high-capacity, heavy-duty crushing in demanding applications. With a massive 1200mm x 864mm (48” x 34”) jaw opening and a robust CAT C13 engine, the J6 delivers unmatched productivity across large-scale quarrying, mining, and infrastructure projects.

Key Features

Engineered for efficiency, the J6 includes a double-deck grizzly prescreen (47.4” x 7’ 8.8”) located under the hopper to remove fines and reduce wear on the jaw. The adjustable speed prescreen, combined with a variable speed pan feeder, enables fine control over material flow and sizing. A variety of mesh options make it suitable for diverse materials and production needs.

With a total machine weight of over 70 tonnes, the J6 is built to thrive in large-volume operations where strength and consistency are essential. Its mobility and design allow for quick setup on-site, reducing downtime and improving throughput.

Applications and Benefits

The J6 is ideal for:

  • High-capacity aggregate production

  • Primary crushing in hard rock quarries

  • Heavy construction and infrastructure development

  • Processing of oversize demolition material

Why Choose the McCloskey J6?

If your operation requires maximum output, durability, and minimal downtime, the McCloskey J6 delivers. It combines brute power with advanced screening and material handling features — making it the flagship model in McCloskey’s jaw crusher lineup. Designed for serious operators tackling serious workloads.

CAPACITY Machine Weight 70,200KG
CAPACITY Chamber Dims 1200mm x 864mm
CAPACITY Pre Screen Yes
CAPACITY Engine CAT C13
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J6 RHS FRONT
J6 RHS BACK
J6 LHS FRONT
J6 LHS BACK
McCloskey J6 Jaw Crusher Copy
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MACHINE BENEFITS

Load Sensing Pumps
E-SERIES MACHINES
WIRELESS REMOTE CONTROL
KEESTRACK-ER REMOTE MONITORING
Load Sensing Pumps
Load Sensing Pumps

A primary crusher with superior shaping ability, the R5 Impact Crusher fills a variety of roles using just one piece of equipment. The R5’s built in pre-screen’s, post-screens and recirculation conveyor ensures maximum product quality and throughput.

E-SERIES MACHINES
E-SERIES MACHINES

A primary crusher with superior shaping ability, the R5 Impact Crusher fills a variety of roles using just one piece of equipment. The R5’s built in pre-screen’s, post-screens and recirculation conveyor ensures maximum product quality and throughput.

WIRELESS REMOTE CONTROL
WIRELESS REMOTE CONTROL

A primary crusher with superior shaping ability, the R5 Impact Crusher fills a variety of roles using just one piece of equipment. The R5’s built in pre-screen’s, post-screens and recirculation conveyor ensures maximum product quality and throughput.

KEESTRACK-ER REMOTE MONITORING
KEESTRACK-ER REMOTE MONITORING

A primary crusher with superior shaping ability, the R5 Impact Crusher fills a variety of roles using just one piece of equipment. The R5’s built in pre-screen’s, post-screens and recirculation conveyor ensures maximum product quality and throughput.

// FAQs

frequently asked questions

Do I need a steel Apron feeder or a belt feeder on my scalping  screen?

The general perception in NZ is a Steel apron feeder is better. This isn't always the case. In most applications a belt feeder scalping screen is better than a apron feeder. The only application where a steel apron feeder comes into its own is sharp rock or feeding large material from the quarry face. In river alluvial rock, topsoil & Compost, sand or small material (200mm-) applications a belt feeder is a far better option. 

Is a Jaw/Cone or a closed circuit impactor better?

There's a lot of variables in this. Are you a contractor who moves from site to site often? What is your main product from a revenue point of view- Could you use a Jaw/Cone 90% of the time and possibly hire an impactor for 1 month of the year to cover demand for certain products? What is your fines content? What's your required throughput? What's your feed size?   Alot of New Zealand have tunnel vision for impact crushers because old mate down the road has one. Remember every quarry is different. We would advise to try a cone crusher if you ever have an opportunity. Don't take someone else's word for it. Where a cone doesn't work for one quarry it may be perfect for another. Think of your long term costs. Initial capital expenditure may be more yes but blow bars are not cheap. There's a reason why all the major quarries in New Zealand run with a Jaw/Cone set up. 

Do i need a stacker for my operation?

In short, yes you do. You may not know it as you've never had one. If you have the space for a stacker, take our advise and buy/hire one. Thank us later. The general comment after some buys a stacker is "I should have bought this years ago". As the old saying goes, its the cheapest loader you'll ever buy. Yes of course you still need to pick the material up to load trucks but you would be shocked at the amount of diesel you'll save and the pressure if takes off a loader operator. The downside to stackers, particular on larger material is segregation. There is ways to mitigate this problem. If you have any questions talk to our team.