Crushers | Rokbro Jaw Crushers | Rokbro // McCloskey J50 Jaw Crusher | Rokbro Equipment NZ

McCloskey J50 Jaw Crusher | Rokbro Equipment NZ

Details
Maximum productivity is delivered through the enhancements to the jaw box including heavier flywheels and optimization for all crushing applications. The J50’s jaw speed leads to better reduction and material being processed faster through the crushing chamber. McCloskey International has a proven reputation for designing quality, best-in-class equipment and the J50 Crusher brings even more power and productivity together in one machine. With its class-leading throughput and capacity and the largest stockpile height in its category the J50 crusher continues to push the boundaries of industry performance.

McCloskey J50 Jaw Crusher Overview

The McCloskey J50 Tracked Jaw Crusher sets the standard for high-performance crushing in demanding applications. With class-leading throughput, a larger jaw chamber, and unmatched stockpile capacity, the J50 is built to handle high-output operations across quarrying, construction, and recycling sectors.

Key Features

Equipped with a powerful jaw box, the J50 features a 1270mm x 735mm (50” x 29”) chamber — one of the largest in its class. The design incorporates heavier flywheels and optimized jaw speed, resulting in faster material processing and excellent reduction ratios.

Performance is further enhanced by McCloskey’s renowned engineering, with efficient material flow, easy access for maintenance, and integrated components that maximize uptime. The machine also boasts the highest stockpile height in its category, reducing downtime between loads and improving operational flow on-site.

Applications and Benefits

Whether you’re processing hard rock, recycled concrete, or demolition material, the J50 offers exceptional capacity and versatility. It's ideal for:

  • Quarry operations and bulk aggregate production

  • Large-scale infrastructure or earthworks projects

  • High-volume mobile crushing in remote environments

  • Operators requiring fast setup and mobility without sacrificing output

Why Choose the McCloskey J50?

If you’re looking for raw power combined with intelligent design, the McCloskey J50 delivers. With its class-leading 50” jaw, high engine output, and mobility, it’s the preferred choice for operators seeking performance without compromise. Rugged, reliable, and ready for any challenge — the J50 is built for serious crushing.

CAPACITY Machine Weight 58,700KG Approx
CAPACITY Chamber dims 1270mm x 730mm
CAPACITY Engine CAT C9
CAPACITY Optional Independent Pre Screen Yes
download full tech spec
J50 RHS FRONT ISO
J50 RHS BACK ISO 2
J50 LHS FRONT ISO
J50 LHS BACK ISO
Crushers | Rokbro Jaw Crushers | Rokbro // McCloskey J50 Jaw Crusher | Rokbro Equipment NZ

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// Crushers | Rokbro Jaw Crushers | Rokbro

MACHINE BENEFITS

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KEESTRACK-ER REMOTE MONITORING
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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.