Our double-shaft plastic shredder machines are heavy-duty, low-speed, high-torque machines used primarily to “pre-cut” large volumes of bulky plastic materials. Its wide intake chute opening allows it to shred entire bales of plastic film and other rigid plastics into small pieces usually between 1-5 inches.
For most plastic recycling plants, these small plastic pieces are then fed into a plastic granulator machine to produce plastic flakes or regrinds that are under 1 inch in size.
Due to its versatility and robust nature, you will find our double-shaft plastic shredders being commissioned in a multitude of industries including but not limited to:
- Rubber recycling
- Metal recycling
- E-waste (electronics waste) or WEEE recycling
- Wood recycling
- Destruction of products for liability issues such as sensitive documents including computer storage media such as hard disks, x-rays, expired goods, outdated stock, pharmaceuticals, etc.
- Size reduction in wastewater treatment plants and other municipal applications.
- Pre-cutting other solids such as destruction of foods, pallets, steel and plastic drums, furniture, construction debris, containers, corrugated boxes, packaging, labels, and other bulky materials.
WORKING PRINCIPLE
At the core of our double-shaft plastic shredder machines, heavy-duty shear blades are mounted on 2 hexagonal shafts that rotate into each other producing a cutting / shredding motion. These robust hooked styled shear blades rotate at slow speeds allowing plastic shredders to have the unique ability to quietly shred large pieces and high volumes of feed stock into random, smaller pieces between 1-5 inches. The low speed of the rotors also ensures that little or not dust is generated.
As our double-shaft plastic shredder machines are usually placed in front of the most demanding jobs, the frame and structure of our shredders use high-thickness sheets and tubular. The shear blades are treatment strengthened and use only the highest quality SKD11 steel (D2 equivalent) to ensure against dulling. Depending the capacity you require, we offer a variety of standard double-shaft shredders for your choosing.
TECHNICAL SPECIFICATIONS
| Model # | Main Motor Power | Number of Blades | Rotating Speed (rotations per minute) | Approx. Capacity |
| SSJ400-800 | 2 x 22KW | 16 / 26 | 25 / 35 RPM | 1,500 KG/H |
| SSJ400-1200 | 2 x 30KW | 24 / 40 | 25 / 35 RPM | 2,500 KG/H |
| SSJ450-800 | 2 x 30KW | 16 / 26 | 18 / 28 RPM | 3,000 KG/H |
| SSJ450-1200 | 2 x 45KW | 24 / 40 | 18 / 28 RPM | 4,000 KG/H |
*Larger, more powerful models available based on your request.
DOUBLE-SHAFT VS SINGLE-SHAFT SHREDDERS
Although both single-shaft and double-shaft shredders are very capable of handling large-sized plastic pieces, double-shaft shredders are better suited for handling bulk volumes of hollow, light-weight plastics such as PE films, PP tubes, HDPE drums, and even rubber tires, automotive parts, and electronic waste.
Single-shaft plastic shredder machines, on the other hand, are better suited to handle solid, thick pieces of plastic such as plastic purging, runners, pallets, and even wood, branches, and bones.
ADDITIONAL IMAGES
WARRANTY
All recycling machines come with a 1 year limited warranty.
INQUIRIES
To get the latest prices and lead times, send us a message using the form below.
Frequently Asked Questions
What is a double-shaft shredder used for?
Double-shaft shredders are heavy-duty, low-speed, high-torque machines used primarily to pre-cut large volumes of bulky plastic materials — entire bales of plastic film, rigid plastics, and more. The wide intake chute swallows whole bales and reduces them to pieces between 1 and 5 inches, which then typically go into a granulator for final size reduction to under 1 inch.
Should I choose a double-shaft or single-shaft shredder?
Choose a double-shaft shredder for bulk volumes of hollow, lightweight plastics such as PE films, PP tubes, HDPE drums, rubber tires, automotive parts, and e-waste. Single-shaft machines are better for solid, thick pieces like plastic purging, runners, and pallets. The key difference is the material’s shape and bulk: hollow and bulky favors double-shaft, dense and solid favors single-shaft.
What capacities are available?
The standard range covers approximately 1,500 to 4,000 kg/h: the SSJ400-800 (2 x 22 kW, 16/26 blades) handles about 1,500 kg/h, the SSJ400-1200 about 2,500 kg/h, the SSJ450-800 about 3,000 kg/h, and the SSJ450-1200 (2 x 45 kW, 24/40 blades) about 4,000 kg/h. Larger, more powerful models are available on request — share your throughput target and we will size the machine.
What are the shear blades made of?
The hooked shear blades are treatment-strengthened and made from SKD11 steel (D2 equivalent) — a high-quality tool steel chosen to resist dulling under demanding, high-volume service. Since these machines are usually placed in front of the toughest jobs, the frame also uses high-thickness sheets and tubular construction for structural durability.
Why do double-shaft shredders run at low speed?
The slow rotor speed (18–35 rpm depending on model) is deliberate: high torque at low speed tears through bulky feedstock quietly while generating little or no dust. The two hexagonal shafts rotate into each other in a shearing motion, so material is cut rather than hammered — which also means less noise, less wear, and lower energy per ton than high-speed alternatives.
What warranty and certification are offered?
All recycling machines come with a 1-year limited warranty, and CE certification is available for the double-shaft shredder range. If you need the machine integrated into an existing line — for example feeding a granulator for sub-1-inch flakes — send us your material and capacity details and we will recommend the right model.