Double-Shaft Fine Shredder

Designed specifically for the efficient shredding and recycling of materials

The ACERETECH Double-Shaft Fine Shredder is specifically engineered for processing films, jumbo bags, woven bags, wood, and various other soft to medium-hardness materials, making it ideal for the pre-treatment stage of plastic recycling. The machine features a dual-shaft, non-pushing structure combined with an intelligent control system, ensuring efficient, stable, and low-energy operation. Its core components utilize advanced laser-cladding wear-resistant technology, significantly extending the machine's service life and enhancing its overall reliability; it stands as a critical piece of equipment in modern plastic recycling production lines.

Double-Shaft Fine Shredder

The ACERETECH Double-Shaft Fine Shredder employs two counter-rotating cutter shafts to continuously shear, tear, and compress materials, thereby achieving highly efficient volume reduction. The optimized design of the shredding chamber effectively minimizes frictional resistance between the shafts, ensuring that the equipment maintains stable performance even during prolonged periods of continuous operation.

The non-ram structural design allows the machine to flexibly adapt to materials of varying forms, making it suitable for processing a wide range of soft to medium-hardness materials—including those that are lightweight, highly prone to tangling, or large in volume.

Key Advantages of Double-Shaft Fine Shredder

High-Efficiency Dual-Shaft Shredding System

* Dual-shaft counter-rotating shearing structure
* Non-pusher design for enhanced feeding flexibility
* Continuous and uniform shredding for improved production stability

Intelligent Control System

* Siemens PLC control system
* One-touch start/stop operation
* Automatic reverse-rotation protection against overloads
* Real-time operational monitoring for enhanced safety

Optimized Mechanical Structure

* Specialized shredding chamber design to minimize internal friction
* Enhanced operational stability and energy efficiency
* Suitable for continuous industrial-scale production

Applicable Materials

This equipment is widely applicable for the volume reduction and pre-treatment of the following materials:

PE / PP Films
PP Woven Bags
Jumbo Bags (FIBCs)
Soft Plastic Scraps/Offcuts
Wood and Paper Products
Lightweight Mixed Solid Waste

Technical Specifications & Capacity

Model	750	900	1100	1400	1600	2100
Rotation diameter(mm)	φ400	φ400	φ400	φ400	φ480	φ480
Main shaft rev(rpm)	73	73	73	73	73	73
Number of rotor blades(pcs)	39x2	45x2	57x2	69x2	54x2	69x2
Number of stator blades(pcs)	(12+2)x2	(14+2)x2	20x2	24x2	(17+2)x2	24x2
Cutting chamber(mm)	1100x768	1100x900	1100x1131	1100x1362	1220x1593	1220x2055
Discharge height H1(mm)	622	622	622	622	820	820
Screen diameter(mm)	Z40	Z40	Z40	Z40	Z60	Z60
Motor power(kW)	2x37	2x45	2x55	2x75	2x110	2x160
Dimension(mm)	2701x2105x2151	2800x2105x2151	3520x2259x2151	3751x2259x2151	4100x1810x2630	4860x1810x2630
Weight(kg)	Approx 5700	Approx 5800	Approx 7100	Approx 7500	Approx 11000	Approx 13500

Laser Cladding Technology | Extending the Service Life of Core Components

To significantly enhance the wear resistance and structural integrity of the rotors, ACERETECH employs advanced laser cladding technology on critical, high-wear components. Compared to traditional electrode surfacing processes, laser cladding creates a significantly stronger metallurgical bond, offering the following advantages:

• Uniform and dense cladding layer
• Minimal heat-affected zone (HAZ)
• Controllable deformation
• Enhanced resistance to cracking and spalling
• Significantly extended service life

Why Choose Laser Cladding Technology?

🔹 The overall service life of the rotor can exceed 10 years.
🔹 The service life of the rotating blade substrate can exceed 5 years.
🔹 Maintains exceptional wear resistance even under prolonged, heavy-load operation.
🔹 Uniform hardness ensures more stable and reliable operation.

High-Precision Manufacturing Process: Ensuring Consistent Quality

Every rotor is processed using ACERETECH’s proprietary laser cladding system, ensuring:
✔ Stable energy output
✔ Precise powder delivery
✔ Consistent and stable cladding layer quality
✔ Maximum preservation of the rotor substrate structure
✔ High manufacturing precision, resulting in stable and controllable equipment performance

FAQ

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Q1. What is the purpose of a dual-shaft fine shredder in plastic recycling?

A: In the field of plastic recycling, dual-shaft fine shredders are primarily used for the size reduction of soft and flexible materials—such as PE films, PP woven bags, and jumbo bags (FIBCs). Acting as primary crushing equipment, they are responsible for the pretreatment of materials, preparing them for subsequent downstream processes such as washing, extrusion, and granulation.

This equipment is commonly utilized in plastic recycling facilities to enhance feeding efficiency and ensure a stable, smooth flow of materials throughout the production line.

Q2. What is the working principle of a dual-shaft shredder?

A: A dual-shaft shredder employs two counter-rotating shafts, each fitted with cutting blades. Materials are automatically drawn into the shredding chamber, where they are continuously subjected to tearing, shearing, and squeezing forces between the two rotating shafts, thereby achieving size reduction.

Unlike single-shaft shredding systems, dual-shaft shredders do not require a ramming mechanism to assist with feeding; this makes them particularly well-suited for processing irregularly shaped, bulky, or film-like materials.

Q3. What does "Laser Cladding Technology" on shredder rotors refer to?

A: Laser cladding is an advanced surface engineering technique primarily used to enhance the wear resistance of shredder rotors. This technology utilizes a laser as a heat source to deposit and fuse high-hardness alloy powder—such as alloys based on SKD11 material—onto the rotor surface, thereby creating a robust metallurgical bond between the two.

Compared to traditional hardfacing processes, laser cladding offers the following significant advantages:

Higher bonding strength;
A more uniform coating microstructure;
A minimal heat-affected zone (HAZ);
Superior resistance to cracking and wear;
An extended service life for critical components.

Q4. What is the typical service life of a dual-shaft shredder rotor treated with laser cladding technology?

A: By applying laser cladding protection technology, the service life of the rotor substrate can typically exceed 10 years under normal industrial operating conditions. The structural lifespan of the cutting blades, meanwhile, can exceed 5 years, depending on the specific materials used, the level of contaminants present, and actual operating conditions.

This significantly reduces maintenance frequency and enhances the long-term operational stability of the equipment.

Q5. Can a dual-shaft shredder be integrated into a complete plastic recycling production line?

A: Yes. Dual-shaft shredders typically serve as the initial processing stage within a complete plastic recycling system. They can be integrated and paired with the following equipment:

Belt conveyors equipped with metal detectors;
Crushers or granulators;
Washing systems;
Dewatering and drying systems;
Extrusion and pelletizing lines.

Through this integration, a continuous recycling process—transforming waste plastics into recycled pellets—can be effectively realized.