Used for heavy-duty shredding of tough materials like metals, aluminum profiles, metal scraps, automobile scrap,tires,solid waste,etc. The most advanced feature is that the shredder can turn forward and reverse without stopping motors at anytime.
The Twin Shaft Shredder is a widely used industrial shredder with low speed, high torque and high throughput, designed to efficiently process a wide range of materials. It can be equipped with different components depending on the material and final size or used with other stages of shredders to reduce the material to the desired size.
Powerfully shredding force is generated by hydraulic unit with dynamic-changing rotating speed and torque. Optima(Manufacturer of Double Shaft Shredder from China) shredders are equipped with hydraulic system and motor for highly reliable performance and low maintenance cost.
The blades can be made integrated one or the hooks can be separated from the base.
Blade material: H13, D2,42CrMo,alloy steel
Our machines are specifically designed to meet the needs of paper mills, corrugated cardboard plants, paper mills, biomass power plants, landfills, recycling plants, manufacturing plants, RDF systems, biostabilization, etc.
1. Advanced structure, reasonable design, low speed, large torque, and low noise.
2. The cutter comes with a split-type structure, it is convenient to replace and is specially used for shredding hollow materials, sheets, plates, and other materials.
3. Equipped with a power protection relay to effectively prevent motor damage caused by power supply overvoltage, Undervoltage, and lack of equivalence.
4. Adopt PLC intelligent control, automatically detect the load of the motor, automatically run forward, stop, reverse and alarm.
5. Equipped with a video surveillance system.
Double Shaft Shredder vs Single Shaft Shredder: Which Do You Need?
This is the most common selection question in industrial shredding. Here is a direct comparison to guide your specification:
Single rotor + pusher + sizing screen: shearing + cutting
Output Particle Size
Larger, less uniform (50–300mm); no screen control
Smaller, more uniform; screen controls output size
Material Range
Very wide: tires, metals, MSW, WEEE, bulky waste
Narrower: plastics, film, light industrial scrap, paper
Handling Mixed Streams
Excellent — accepts heterogeneous and contaminated feeds
Moderate — hard or metallic contaminants risk blade/screen damage
Throughput
High (bulk volume reduction)
Medium (finer output)
No-Screen Design
Higher throughput, easier maintenance
Screen requires periodic cleaning and replacement
Best For
Primary coarse shredding of bulky/hard/mixed materials
Secondary or fine shredding of relatively clean, uniform plastic/paper
Typical Next Stage
Granulator, magnetic separator, secondary shredder
Directly usable output or extruder/pelletizer feed
Decision rule: If your material is bulky, mixed, contains metal, is a whole tire, or is a large rigid item — choose a double shaft shredder. If you need small, consistent output particles from relatively clean plastic or paper — a single shaft shredder is more appropriate. Many complete recycling lines use both in sequence: double shaft for primary size reduction, single shaft for finishing.
Frequently Asked Questions
Q1: What is the output size of a double shaft shredder, and can it be adjusted? A: Output size from a double shaft shredder is determined primarily by the gap between the two counter-rotating blade sets and the blade tooth pitch — not by a screen. Typical output ranges from 50mm to 300mm depending on the model and blade configuration. The gap can be adjusted mechanically during maintenance to shift the output size range. For applications requiring tight particle size control (e.g., ±10mm), we recommend following the double shaft shredder with a granulator or single shaft secondary shredder that uses a sizing screen.
Q2: Can a double shaft shredder handle whole tires without any pre-processing? A: Yes. Our double shaft shredder is specifically engineered to accept whole passenger car tires (up to 1,200mm diameter) and truck tires without any pre-cutting, bead removal, or rim removal. The hook blade design grips the tire carcass and the counter-rotating torque tears it apart. The hydraulic drive dynamically increases torque when it encounters the steel belt zone. For OTR, mining, or aircraft tires (diameter > 1,500mm), contact us to confirm the correct model — custom infeed opening configurations are available.
Q3: What is the difference between the integrated blade and the replaceable hook blade? A: The integrated (monobloc) blade has the hook geometry machined directly into the disc — it is a single piece. This gives maximum rigidity and is preferred for high-impact materials like metals and large steel-belted tires. When worn, the entire disc is replaced. The replaceable hook type has bolt-on hook teeth; only the teeth are replaced when worn, not the entire disc. This significantly reduces ongoing maintenance cost for high-volume operations processing softer materials. We will recommend the correct blade type for your specific application.
Q4: How often do double shaft shredder blades need replacing? A: Blade life depends heavily on material hardness and abrasivity. For standard plastic and light industrial waste, blade life is typically 600–1,200 operating hours. For tires and mixed metal-contaminated waste, expect 300–600 hours. Our heat-treated alloy steel blades (HRC 56–62) are at the upper end of standard industry blade life for Chinese-manufactured equipment. Replacement blades are available from our factory on short lead times, and we supply full engineering drawings so local manufacturing is also possible.
Q5: Can the double shaft shredder run automatically without continuous operator attention? A: Yes. The PLC-based control system handles automatic start/stop, overload detection, automatic shaft reversal when a jam or overload is detected, and auto-resumption of forward operation. In normal operation with a consistent feed stream (conveyor-fed), the machine runs unattended. An operator is required for monitoring, periodic inspection, and to clear any materials that the auto-reverse cannot eject. Remote monitoring and fault alert options are available as a system integration feature.
Q6: What certifications does your double shaft shredder carry, and can it be exported to the EU? A: Our double shaft shredder carries CE certification (Machinery Directive 2006/42/EC) and ISO 9001 quality management certification. CE marking covers the complete machine including the electrical control panel and safety guarding. Export to the EU, UK, USA, and other regulated markets is standard. We can provide full documentation for customs clearance and installation compliance.
Q7: Do you offer complete shredding system integration, or just the shredder? A: We offer both. The double shaft shredder can be supplied as a standalone unit with a standard hopper. We also design and supply complete shredding systems including infeed conveyor, the shredder, discharge conveyor, magnetic separator, secondary size reduction (granulator), and control integration. For tire recycling systems specifically, we supply the complete Stage 1 through Stage 4 processing line. Please describe your application and we will propose a complete system layout.
Q8:Will you send the engineer to guide installation?
A: Yes, according to the customer's requirement, engineers will be sent to guide installation, commissioning, and training.
Q9:Can you offer the OEM and the R&D product?
A: OEM & ODM are available by the engineering team with 15+ years of experience.
Q10:What is the main feature of your shredder?
l Be designed with an aggressive low RPM, and high torque shredding technology.
l All of our blades are made from exotic steel and heat treated to an average of 56-60 on the Rockwell Scale.
l Each shaft is driven by its own Siemens motor, giving it plenty of power to drive through tires and thick steel beads.
l Customized capacity can be up to 20tons per hour.
FLOW CHART
The 3D design shredder chamber tells you the shafts,blades,spacers.
RAW MATERIALS
Crushing and recycling of various solid wastes
JEP offers size reduction equipment and recycling/disposal solutions for different solid wastes, which help to improve resource efficiency and reduce the space occupied by landfills.
