Crushers | Rokbro Jaw Crushers | Rokbro // McCloskey J45 Jaw Crusher | Rokbro Equipment NZ

McCloskey J45 Jaw Crusher | Rokbro Equipment NZ

Details
The J45 high capacity jaw crushers feature a true 1140mm (45″) x 688mm (27″) jaw. With both level and load sensors the J45 ensures the most efficient material handling across applications. The J45 features a heavy duty bofar design and pan feeder chutes with steeper angles to reduce material sticking.

McCloskey J45 Jaw Crusher Overview

The McCloskey J45 Jaw Crusher delivers high production performance with a robust design suited for heavy-duty material handling. Known for its durability and output, the J45 is a trusted choice for aggregate producers, contractors, and recyclers who demand reliability and throughput from their crushing equipment.

Key Features

At the heart of the J45 is a true 1140mm x 688mm (45” x 27”) jaw chamber — offering one of the largest jaws in its class. This machine combines power and precision with a C9 / C9.3 Caterpillar engine and an advanced pre-screening system that boosts efficiency by reducing wear on the jaw and allowing fine materials to bypass.

The heavy-duty bofar design and steep pan feeder chutes help minimize material build-up and sticking, particularly in wet or sticky conditions. With features like a hydraulically folding main conveyor and an adjustable discharge height, the J45 adapts well to varied on-site demands.

Applications and Performance

Designed for maximum uptime and output, the J45 is ideal for:

  • Quarry operations and large-scale aggregates

  • Infrastructure and road construction

  • Concrete recycling and hard rock crushing

  • High-volume mobile crushing setups

Why Choose the McCloskey J45?

If your operation demands heavy-duty productivity with consistent performance, the McCloskey J45 is built to deliver. Combining a large jaw, intelligent material flow design, and transport-friendly frame, it offers the perfect mix of power and versatility for demanding sites across New Zealand.

CAPACITY Machine Weight 43,900KG
CAPACITY Jaw Chamber 1140mm x 680mm
CAPACITY Engine Size C9 / C9.3 Cat Engine
CAPACITY Pre Screen YES
CAPACITY Hyd Drop down conveyor YES
download full tech spec
J45 GREY CHASSIS RHS FRONT
J45 GREY CHASSIS RHS BACK
J45 GREY CHASSIS LHS FRONT
J45 GREY CHASSIS LHS BACK
J45R NEW COLOURS RHS FRONT
J45R NEW COLOURS LHS FRONT
J45R NEW COLOURS LHS BACK
J45R NEW COLOURS RHS BACK
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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.