What Is a Double Shaft Shredder Machine?
A double shaft shredder (also known as a twin shaft shredder) is an industrial waste processing machine designed for size reduction of bulky and difficult materials. It is widely used as a pre-shredding solution in solid waste management systems before sorting, recycling, or further crushing processes.
It is mainly used to handle irregular, high-volume, and mixed waste streams that are difficult for single-shaft or fine crushing equipment. It improves waste volume reduction and recycling efficiency in municipal, industrial, and commercial systems. Applications include metal recycling, plastic waste processing, tire recycling, wood waste treatment, and MSW reduction facilities.
For bulky waste, industrial refuse, or light textiles, volume reduction is a two-step process: initial cutting and final compression. Once the material is downsized by our twin-shaft shredders, it is ideally discharged into a heavy-duty waste baler machine to transform loose, shredded shreds into ultra-compact block profiles ready for waste-to-energy plants.
Products Display
Working principle
The double shaft shredder working principle is based on two parallel shafts with interlocked blades driven by independent motors or hydraulic systems. As a typical twin shaft shredder machine, it uses counter-rotation to achieve automatic feeding, strong shearing, and controlled size reduction for complex solid waste materials.
The Double Shaft Shredder uses two counter-rotating cutter shafts to tear, shear, and crush materials through the combined action of high torque and low-speed rotation. Materials entering the shredding chamber are continuously grabbed, squeezed, and cut by the intermeshing blades until they are reduced to the required size.
The machine adopts a PLC intelligent control system with automatic start, stop, overload protection, and reverse rotation functions. When overloaded materials are detected, the shafts automatically reverse to prevent jamming and ensure stable continuous operation.
Featuring low-speed, high-torque operation, the shredder delivers strong shredding force while maintaining low noise, low dust generation, and reduced wear. The split-type bearing housing design also allows convenient blade maintenance and faster replacement, helping reduce downtime and maintenance costs.
Parts of Double Shaft Shredder
The Double Shaft Shredder mainly consists of a feeding hopper, shredding blades, dual shafts, drive system, gearbox, bearings, electrical control system, and machine frame. These components work together to provide efficient tearing and size reduction for bulky and tough waste materials.
- Shredding Blades
High-strength alloy steel blades with excellent wear resistance and strong shredding performance. - Dual Cutter Shafts
Counter-rotating shafts provide stable feeding and powerful tearing force for flexible and bulky materials. - Drive System
High-torque motor and transmission system ensure stable operation under heavy loads. - Gearbox / Reducer
Increases torque output and improves shredding efficiency while reducing energy consumption. - Feeding Hopper
Designed for smooth and continuous feeding of large-volume materials. - Bearing System
Heavy-duty bearings ensure stable operation and longer service life. - Electrical Control System
Supports overload protection, automatic reversing, and safe operation. - Machine Frame
Reinforced steel structure provides strong stability and vibration resistance.
Advantages
Specification
The technical parameters of the Double Shaft Shredder can be adjusted according to different material types and production requirements. To meet various recycling needs, we offer multiple equipment models. In addition, customized design solutions can be provided based on your material characteristics, capacity targets, and production line layout.
| Model | Motor Power (kW) | Shaft Speed (r/min) | Capacity (m³/h) | Blade Thickness / Quantity | Output Size |
| SL612 | 45×2 | 14–20 | 2–20 | 16–28 | Adjustable |
| SL912 | 75×2 | 11–20 | 2–9 | 20–40 | Adjustable |
| SLH912 | 110×2 | 6–16 | 3–30 | 20–40 | Adjustable |
| SL1216 | 75×2 / 90×2 / 110×2 | 10–20 | 8–30 / 8–30 / 10–50 | 16–30 | Adjustable |
| SL1418 | 160×2 / 200×2 / 220×2 / 250×2 | 10–20 | 30–50 | 14–18 | Adjustable |
| SL1620 | 160×2 / 200×2 / 220×2 / 250×2 | 10–20 | 40–80 | 14–18 | Adjustable |
Double Shaft Shredder vs Single Shaft Shredder
When comparing a double shaft shredder vs single shaft shredder, the main differences are shredding method, torque, output size, and material application. In twin shaft vs single shaft shredder applications, double shaft models provide higher torque, stronger anti-jamming performance, and larger capacity for bulky and mixed waste, while single shaft shredders are better for uniform materials and fine output size control.
| Comparison Item | Double Shaft Shredder | Single Shaft Shredder |
| Working Principle | Shearing + Tearing | Cutting + Screening |
| Shaft Design | Dual counter-rotating shafts | Single shaft + fixed blade |
| Feeding Method | Automatic feeding | Hydraulic pushing system |
| Torque | Higher | Medium |
| Power System | Dual motor + planetary gearbox | Single motor + reducer |
| Output Size | Coarse | More uniform |
| Suitable Materials | Bulky & hard waste | Plastic / wood / film |
| Throughput | Higher | Medium |
| Maintenance | Lower | Medium |
Applications
The double shaft shredder is a key pre-treatment machine in solid waste recycling systems, widely used in Zhengzhou Zhongyi solutions. It handles complex, mixed, and high-strength materials with stable performance, supporting waste reduction, recycling, and RDF production across multiple industries.
Municipal & Construction Waste Processing: The MSW shredder processes mixed municipal waste, construction debris, and bulky waste such as bricks, concrete, and furniture. It reduces material size for sorting and RDF production, and is widely used in urban solid waste recycling systems.
Industrial & Metal Recycling: As a metal shredder, it handles scrap steel, oil drums, and industrial waste with high torque power. Combined with magnetic separation systems, it improves metal recovery efficiency and supports large-scale industrial recycling operations.
Plastic, Wood & Biomass Recycling: In plastic shredding machine applications, it processes plastic films, pipes, woven bags, wood pallets, and biomass waste. The output can be reused for granulation or RDF fuel, making it suitable for recycling and energy recovery systems.
Special Waste & Energy Recovery: The tire shredder is used for waste tires, cables, and e-waste. It breaks materials into uniform sizes for separation and RDF production, improving recycling efficiency and supporting sustainable energy recovery processes.
Applicable Materials
Project Cases
In Tibet, China, Henan Xinzhongyi Eco Equipment Co.,Ltd. successfully installed a double shaft shredder system for a construction and decoration solid waste project with a capacity of 150–200t/h, processing concrete blocks, bricks, and mixed debris. The project was carried out under harsh high-altitude conditions with low temperature and limited oxygen. The installation team completed precise assembly and commissioning on site while strictly following engineering standards, and applied dust control and noise reduction measures to ensure environmentally friendly construction.
The equipment adopts a high-torque, low-energy design with stable performance and strong adaptability, enabling efficient solid waste reduction and recycling. It helps convert construction waste into reusable materials, reducing landfill pressure and supporting sustainable development with reliable operation, easy maintenance, and intelligent control system.
Custom Double Shaft Shredder Options
We provide customized Double Shaft Shredder design and complete recycling production line solutions based on your material characteristics and processing requirements. Whether you need a standalone shredding machine or an integrated system with conveying, sorting, and recycling equipment, our engineering team can help configure a reliable and efficient solution for your project.
To help us recommend the most suitable solution, please provide the following information:
- Type of material to be shredded
- Material size and bulk density
- Required processing capacity (t/h or kg/h)
- Desired output size
- Moisture content or material characteristics
- Power supply requirements
- Space limitations or installation conditions
- Whether a complete recycling production line is required
Double Shaft Shredder Machine Manufacturer & Supplier?
Henan Xinzhongyi Eco Equipment Co.,Ltd. is a professional manufacturer of solid waste recycling and crushing equipment, integrating R&D, production, and engineering solutions. With strong manufacturing capability and global project experience, we provide reliable double shaft shredder systems and complete recycling solutions for municipal, industrial, and construction waste treatment projects.
FAQ
A double shaft shredder processes MSW, construction waste, scrap metal, tires, plastics, wood, e-waste, textiles, and bulky mixed waste for volume reduction and recycling pre-treatment.
Double shaft uses counter-rotating blades for strong tearing and bulky waste; single shaft shredder uses pushing system and screen for controlled, uniform output mainly for plastics and light materials.
It typically produces 50–300mm coarse output depending on blade design, shaft speed, and material type. It is mainly used for pre-shredding and volume reduction, not fine crushing.
Selection depends on material type, capacity, output size, and feeding system. Heavy materials like metal and tires need high torque models, while mixed waste requires customized solutions.
Used in MSW treatment, construction waste recycling, metal and tire recycling, RDF production, plastic processing, and industrial waste management as a key pre-shredding machine.
Includes installation guidance, commissioning, operator training, spare parts supply, remote support, maintenance service, and optional overseas on-site technical assistance for projects.
