Our double-shaft plastic shredders are designed for breaking down and cutting PP / PE rigid containers, drums and pallets into small pieces. It’s a perfect addition to our standard plastic washing plants requiring larger capacities. The planetary gear on these shredders can tremendously increase torque so tough plastic waste can be shredded more easily.
At the core of the double-shaft shredder are shear blades mounted on 2 hexagonal shafts that rotate into each other producing a cutting / shredding motion. These hooked styled shear blades allowing the shredder to quietly shred high volumes of plastic waste
As our double-shaft shredders 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.
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Frequently Asked Questions
What materials can the double-shaft shredder process?
The shredder is designed for PP and PE rigid containers, drums, and pallets — bulky, tough-walled plastics that resist ordinary granulators. Hooked shear blades on twin hexagonal shafts grip and tear thick-walled parts quietly and efficiently. It is a perfect addition to standard plastic washing plants that need larger capacities, handling the heaviest pre-shredding duty at the front of the line.
How does the twin-shaft cutting action work?
Shear blades mounted on two hexagonal shafts rotate into each other, producing a scissor-like cutting and shredding motion. The hooked blade style grabs material and pulls it into the cut rather than bouncing it away, so the machine shreds high volumes of rigid plastic quietly and with little dust. This low-speed, high-torque action is ideal for dense, unpredictable feed like drums and pallets.
What does the planetary gear do?
The planetary gearbox tremendously increases torque delivered to the shafts, so tough plastic waste — thick drum walls, reinforced pallets, compacted bales — is shredded more easily without stalling. High torque at low speed is the key advantage of twin-shaft designs: the machine powers through difficult material instead of relying on rotor speed, which also keeps noise and wear lower than high-speed alternatives.
How do I choose the right model and capacity?
We offer a variety of standard double-shaft shredders to match your required throughput and material toughness. Consider your hourly tonnage, the largest and thickest items you process, and whether the shredder feeds a washing line or works standalone. Oversized drums and pallets need larger cutting chambers and higher torque — share your material mix so the shaft size, blade configuration, and drive are specified correctly.
Should I choose double-shaft or single-shaft for rigid plastics?
Double-shaft shredders excel at tearing whole drums, containers, and pallets at low speed with massive torque, producing coarse pre-shredded pieces for downstream granulators. Single-shaft machines run faster against a screen for more uniform output sizing. For help deciding which design fits your material stream and line layout, see our guide to choosing between single-shaft and double-shaft shredders.
What maintenance do the shear blades require?
The shear blades are treatment-strengthened SKD11 tool steel (D2 equivalent) to resist dulling, but rigid containers and pallets are abrasive, so regular inspection is essential. Check for chipped or rounded edges, monitor output particle size for signs of wear, and schedule resharpening before performance drops. The high-thickness steel frame and tubular structure are built for the most demanding jobs with minimal structural maintenance.