Crushers | Rokbro Jaw Crushers | Rokbro // McCloskey J4 Jaw Crusher | Rokbro Equipment NZ

McCloskey J4 Jaw Crusher | Rokbro Equipment NZ

Details
The new McCloskey® J4 builds on the robust design of the proven performance McCloskey Jaw crushers, and adds new productivity with an exciting line-up of features aimed at boosting productivity and offering enhanced durability across applications

McCloskey J4 Jaw Crusher Overview

The McCloskey J4 Tracked Jaw Crusher is engineered for high-capacity crushing, delivering unmatched performance and durability in tough operating conditions. Designed for heavy-duty material processing, the J4 is built to excel in quarrying, mining, demolition, and recycling applications.

Key Features

With an oversized 1060mm x 700mm jaw chamber, the J4 is capable of handling large feed sizes while maintaining excellent reduction ratios. Its heavy-duty design, paired with advanced hydraulics and a robust 375hp engine, ensures consistent throughput and reliable operation under load.

The J4’s tracked mobility and compact transport dimensions make it easier to relocate across sites. Optional features such as a pre-screening unit, extended main conveyor, and recirculating system offer greater control over product sizing and throughput efficiency.

Performance and Applications

Built for high-output operations, the McCloskey J4 is ideal for:

  • Large-scale aggregate production

  • Hard rock quarry applications

  • Demolition waste processing

  • Road base and infrastructure projects

With a production capacity exceeding 400 TPH (varies by material), the J4 can confidently handle demanding jobs while keeping operating costs in check.

Why Choose the McCloskey J4?

Operators looking for a rugged, mobile jaw crusher with serious production capacity will find the J4 to be a reliable choice. Its balance of power, efficiency, and configurability make it a core part of any high-volume crushing setup.

 
CAPACITY Jaw Chamber 1060mm x 700mm
CAPACITY Weight 51,280kg c/w Dirt Belt and Magnet
CAPACITY Engine Size CAT 9.3
CAPACITY Independent Pre Screen Yes
CAPACITY Hydraulic Drop down conveyor Yes
download full tech spec
J4 NEW logos Camera 5 50
J4 NEW logos Camera 4 49
J4 NEW logos Camera 6 51
J4 NEW logos Camera 7 new
J4R NEW LHS BACK
J4R NEW LHS FRONT
J4R NEW RHS BACK
J4R NEW RHS FRONT
Crushers | Rokbro Jaw Crushers | Rokbro // McCloskey J4 Jaw Crusher | Rokbro Equipment NZ

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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.