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2020 / 2021 Edition

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High-performance Magnum crushers from IROCK

Magnum 20 primary crusher

Three-model crushing equipment range offers high production rates and flexibility

IROCK Crushers, a leading US-based manufacturer of crushing and screening equipment, have introduced a new primary crusher range. The Magnum crusher is a high-performance four-bar impactor with heavy-duty components for reliability, increased efficiency and high precision.

Available in three sizes – the Magnum 15, 20 and 30 – the crusher is said to perform well in quarry, demolition and recycling applications, and is suitable for operators who require a primary crusher or those who run a crushing and screening operation and need the flexibility to perform two separate jobs simultaneously.

The Magnum 15, 20 and 30 machines are all equipped with Cat ACERT Tier 3 engines offering 350hp, 440hp and 550hp respectively. The Magnum 15 model is capable of processing up to 350 tonnes/h; the Magnum 20 up to 500 tonnes/h and the Magnum 30 up to 650 tonnes/h.

Each crusher includes three auxiliary outlets for the operation of transfer or stacking conveyors. The Magnum crushers are also equipped with a P.T. Tech clutch, which decreases power loss and increases fuel-efficiency.

The units are highly portable and operators can enhance the ease of transport with IROCK’s optional patented Hydraset Hopper. The hopper operates from an internal power pack, allowing it to be easily detached and placed on a trailer in a matter of minutes without a lifting device.

This is crucial with the Magnum 30, which cannot be transported without the removal of the hopper because of weight limitations. After relocating, the hydraulic outriggers provide fast and easy set up.

A vibrating feeder with a heavy-duty, two-step tapered grizzly removes fines and allows only larger materials into the crusher. The feed openings vary in size from 40in x 32in to 56in x 43in.

Hydraulically adjustable aprons with three-stage crushing on IROCK’s impact crushers ensure better control over sizing. The four-bar impactor design offers maximum material reduction that minimizes wear and enhances performance and production.

The mobile crusher also features the company’s Rock Box system, an innovative alternative to the discharge chutes found on similar units. The Rock Box uses a shelf system with abrasion-resistant wear bars that allow crushed material to build up and act as a wear liner, effectively reducing maintenance.

The Rock Box also incorporates specialized AR-400 steel plate liners for each material transfer point, which is said to provide longer durability compared with the rubber liners used by other crusher manufacturers.

In addition, IROCK have an optional in-line discharge belt available that reaches a discharge height of 10ft 11in for higher stockpiling and the ability to pair Magnum crushers with screening units.

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