Single Shaft Shredder

What is Single Shaft Shredder ?

Single shaft shredder is a machine that uses a rotating knife roller equipped with multiple moving knives to interact with fixed knives on a box to shear, tear and squeeze materials to reduce their size. It is one of the most common and widely used equipment in the field of industrial crushing.

Single Shaft Shredder Video

Application

• Plastics: Large plastic drums, machine head stock, pipes, profiles, fishing nets, strapping tape, waste tires (rubber blocks), etc.
• Wood: Pallets, building formwork, tree roots, wood scraps, used furniture, etc.
• Metal: Thin metal drums, scrap iron, electronic waste, aluminum profiles, etc. (high requirements for blade material).
• Solid Waste Treatment: Bulk household waste, industrial waste, medical waste (requiring special safety design), paper mill waste, etc.
• Other: Scrap cables, paper-plastic composites, used textile bags, etc.

Working Principle

1. Feeding: Material is fed into the shredder hopper through the feed system.
2. Grabbing and Tearing: The rotating blades on the rotating cutter drum grab the material and pull it into the gap between the cutter drum and the fixed blades.
3. Shearing: Driven by a powerful hydraulic or electric drive, the rotating and fixed blades create a continuous shearing action, cutting the material into smaller pieces.
4. Screening and Discharging: The shredded material falls under the action of gravity and is discharged through the screen at the bottom.

Main Components

1. Cutter Roller Assembly: This is the core component. It consists of a heavy-duty main shaft and multiple sets of rotating blades mounted on it. The blades are made of high-strength alloy steel and are heat-treatable and resharpenable.
2. Fixed Blades: These are mounted on the machine chassis and work with the rotating blades to form the shearing assembly. Each machine typically has one or two fixed blades.
3. Housing: This sturdy welded structure houses all working components and provides strong support.
4. Powertrain: Typically composed of a high-power motor and a heavy-duty reducer, these systems deliver low-speed, high-torque output, ensuring powerful shredding force.
5. Pusher: A hydraulically driven pusher plate continuously pushes the material toward the cutter rollers, ensuring uniform feeding.
6. Screen: Located at the bottom, it controls the output size.
7. Hydraulic System: Powers the pusher system and, in some designs, reverses rotation to clear jams or provide overload protection.
8. Electronic Control System: Controls the entire machine’s start, stop, reverse rotation, and overload protection.