Twin-Shaft Pre-Shredder | Scrap Metal Shredder

ENERPAT MSB-MPS2400

Boost your primary shredder's efficiency with ENERPAT's MSB-MPS2400 pre-shredder. As a leading industrial shredder manufacturer, we deliver a low-speed, high-torque solution that ensures consistent output, reduces energy costs, and extends wear part life—perfect for scrap metal and ELV recycling.Boost your primary shredder's efficiency with ENERPAT's MSB-MPS2400 pre-shredder. As a leading industrial shredder manufacturer, we deliver a low-speed, high-torque solution that ensures consistent output, reduces energy costs, and extends wear part life—perfect for scrap metal and ELV recycling.

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ENERPAT MSB-MPS2400 Pre Shredder
Also known as: Primary shredder, Industrial Shredder, Scrap Metal Shredder, ELVs Shredder.

The ENERPAT MSB-MPS2400 is a heavy-duty twin-shaft pre-shredder purpose-built for scrap metal and end-of-life vehicle (ELV) pre-processing. Featuring a 2,400 mm feeding width, it accepts a wide range of feed materials—from mixed scrap and metal bales to baled ELV scrap—without the need for pre-sorting or manual preparation. Driven by a low-speed, high-torque dual-rotor system, the MSB-MPS2400 tears materials apart slowly rather than through high-speed impact, significantly reducing the risk of deflagration in the downstream primary shredder. With a top rotor powered by a 132 kW motor and a bottom rotor driven by 2 × 240 kW motors, it delivers a throughput of up to 110 t/h for mixed scrap and ELVs, producing a homogenized, consistent output that optimizes main shredder performance, minimizes wear, and extends wear part life.

The MSB-MPS2400 is engineered with high-strength alloy steel cutters (hardness up to HRC59±1) and heavy-duty plummer block bearings to withstand heavy impact loads, ensuring reliable, continuous operation even in the most demanding recycling environments.

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primary shredder

industrial shredder

scrap metal shredder

ELVs shredder

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Challenges & Solutions

Product Details

Equipment Specification

Customer Story

Why Choose Us

MSB-MPS2400 Pre-Shredder Working Principle

Key Challenges & ENERPAT Solutions

Metal recyclers and ELV processors know the drill: the main shredder is the heart of the operation, but its performance depends entirely on what you feed it. Raw scrap arrives in all shapes, densities, and levels of contamination. The MSB-MPS2400 pre-shredder sits at the front end to tackle these issues head‑on—not by brute force, but by controlled, low‑speed tearing that prepares the material for what comes next.

Irregular Feed Ruins Shredder Efficiency
If the main shredder has to chew through whole car bodies, mixed bales, and oversize plate all day, its rotor speed fluctuates, power draw spikes, and throughput becomes a guessing game. The MSB‑MPS2400 breaks down bulky feedstock into a consistent chunk size, so the hammer mill sees a steady stream—no surging, no starvation. That translates into predictable tonnage per hour and far less mechanical stress.
Hidden Explosive Risks in the Feed Stream
Pressurised cylinders, trapped fuel vapour, or residual oils are common in ELV scrap. When these hit a high‑speed impact mill, the sudden release of energy can ignite. Our twin‑shaft unit works at slow rotation with high torque—it shears and rips, not smashes. This gentle‑by‑comparison action vents or releases hazardous contents in a controlled environment, well upstream of the primary shredder, so a potential ignition source never reaches the main machine.
Wear Part Replacement Drains Budgets and Time
Hammer tips, grates, and breaker bars are expensive and take hours to change. When the main shredder processes unprepared scrap, these parts wear out faster because they absorb all the abrasive impact from dirt, stones, and heavy sections. By pre‑tearing the feed, the MSB‑MPS2400 removes or reduces the toughest lumps, meaning the main shredder’s wear surfaces last significantly longer—savings you can see in the maintenance ledger every quarter.
Energy Costs Creep Up with Every Oversize Piece
A common myth is that adding a pre‑shredder doubles energy use. In practice, the main shredder consumes far more power when it struggles with irregular, large‑size material. The MSB‑MPS2400 runs its electric‑hydraulic drives at relatively low power while smoothing the load on the big mill. The net result is often lower kWh per ton, because the primary unit stays in its optimal operating band rather than constantly ramping up and down.
Poor Output Consistency Hurts Downstream Sorting
Eddy‑current separators, dense‑media baths, and optical sorters rely on a narrow size distribution to recover clean fractions. If the main shredder spits out a mix of fines and chunks, recovery drops. Pre‑shredding enables full‑box shredding—the hammer mill fills evenly and discharges a more uniform particle size, which directly improves metal recovery rates and boosts the value of your final products.
Unplanned Downtime from Bearing or Cutter Failures
Heavy impact loads can knock out bearings or snap cutter teeth, stopping production for half a shift or more. The MSB‑MPS2400 uses heavy‑duty split‑housing bearings rated for severe shock, and its cutters are forged from alloy steel hardened to HRC59±1. The hydraulic direct‑drive system eliminates gearbox weak points. Combined, these design choices keep the machine running day in, day out, with scheduled maintenance that is straightforward and quick—no special tools, no extended shutdowns.

Material Testing

The Enerpat Standards: Excellence in Every Detail

Structural Integrity: Heavy-Duty Twin-Rotor Design

Reinforced Box Construction for Extreme Torsional Loads
Unlike single-shaft designs, the MSB-MPS2400 features a dual-rotor system housed in a heavy-duty welded box frame. The structure is engineered with extra-thick side plates and cross-bracing to absorb the high torsional forces generated during low-speed, high-torque tearing. This robust framework keeps the rotor shafts in precise alignment even when processing mixed scrap containing heavy sections or unshreddable contaminants, ensuring years of reliable service without structural fatigue.
Drive System: High-Torque Hydraulic Direct Drive

Hydraulic Motors with Built-In Overload Protection
Instead of relying on gearboxes—which are prone to shock damage—the MSB-MPS2400 employs direct hydraulic drive motors on both rotors. Each motor delivers instant high torque at low RPM, allowing the machine to power through dense material without stalling. The hydraulic system automatically adjusts pressure to match feed resistance, and when an unshreddable object is encountered, the rotors reverse direction momentarily to clear the obstruction. This eliminates mechanical fuse points and reduces the risk of catastrophic failure common in gear-driven shredders.
Cutter Technology: Forged Alloy Steel with Long Service Life

Hardened Cutters Designed for Abrasive Scrap Streams
The cutter teeth on the MSB-MPS2400 are machined from high-grade alloy steel and heat-treated to a hardness of HRC59±1. Each tooth is replaceable individually, so you don't scrap an entire rotor when one segment wears out. The star-shaped rotor configuration alternates cutter spacing to achieve a self-cleaning effect, reducing material wrapping and minimising downtime for cleaning. For customers processing heavily contaminated ELV scrap or baled material with high dirt content, optional hard-faced cutter profiles are available to extend service intervals further.
Bearing System: Heavy-Duty Plummer Blocks

Split-Housing Bearings Built for Impact Resistance
Bearings take the brunt of the abuse in any pre-shredder. The MSB-MPS2400 uses oversized plummer block (split pillow) bearings with spherical roller elements, specifically selected for their ability to handle radial shock loads and moderate misalignment. The split housing design allows bearing inspection and replacement without dismantling the entire drive train, cutting maintenance time significantly. Grease-lubricated with heavy-duty seals, these bearings keep contaminants out and stay reliable even in dusty scrap yard environments.
Electrical & Control: User-Friendly Automation with Remote Diagnostics

Intelligent PLC Control with Touchscreen Interface
The MSB-MPS2400 is managed through a programmable logic controller (PLC) with a colour touchscreen panel, giving operators real-time visibility into motor loads, hydraulic pressure, and throughput statistics. The control system includes automatic reverse-on-overload logic, which protects the machine from damage when uncrushable items enter the chamber. For multi-site operators, remote diagnostics connectivity allows ENERPAT service engineers to troubleshoot issues without an on-site visit, minimising production interruptions and getting your line back up faster.

Equipment Specification

MSB-MPS2400 Pre Shredder

Parameter	Metric	Imperial
Feeding width	2400 mm	94.5 in
Top rotor (low speed) and flipper	132 kW	177 hp
Bottom rotor (high speed)	2 x 240 kW	2 x 322 hp
Top rotor - Stars	4	4
Top rotor - Teeth per star	10	10
Top rotor - Diameter incl. teeth	1600 mm	63.0 in
Top rotor - Hydraulic motors	1 (optional 2)	1 (optional 2)
Bottom rotor - Stars	5	5
Bottom rotor - Teeth per star	10	10
Bottom rotor - Diameter incl. teeth	1600 mm	63.0 in
Bottom rotor - Hydraulic motors	2	2
Throughput - Miscellaneous scrap; ELV	110 t/h	121 STPH
Throughput - Bale density < 0.8 t/m3	100 t/h	110 STPH
Throughput - Bale density < 1.0 t/m3	90 t/h	99 STPH

Design Concept & Product Story

The MSB-MPS2400 starts with a simple premise: the main shredder works best when it gets consistent, manageable feed. Instead of high-speed impact, we designed a twin-shaft system that tears material apart at low speed with high torque. This controlled reduction minimises dust, noise, and the risk of deflagration—problems that plague impact-based machines.

The two rotors run at different speeds, each with its own cutting geometry. The top rotor grips and pulls bulky material in, while the bottom rotor refines it further. This asynchronous action gives the machine a strong bite on mixed scrap and prevents stalling on dense sections—a balance that conventional single-speed designs often miss.

Hydraulic direct drive powers both rotors, eliminating gearboxes and their failure points. The system automatically reverses on overload to clear uncrushable items, and split bearing housings allow quick service without pulling the shafts. These choices aren't about adding features; they're about keeping the machine running day after day with predictable maintenance.

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Why Choose Us

Trusted by Global Metal Recyclers

With decades of engineering heritage and a presence in 165 countries, ENERPAT delivers pre-shredding solutions that major recycling operations rely on for consistent performance.
Seamless Integration with Existing Lines

Designed to feed directly into your primary shredder, the MSB-MPS2400 connects upstream with minimal plant modification—start seeing results from day one.
Built for Demanding Scrap Streams

Engineered specifically for ELVs, metal bales, and mixed scrap, the twin-shaft low-speed design handles the toughest feed while protecting your main shredder from wear.
Full-Service Support, Worldwide

From site assessment and installation to 24/7 after-sales support and lifetime parts supply, we stand behind every machine we build.

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