SG-S series is applicable to shredding bulk sprue material,rubber and thick wall defect and the mesh crushing is optional.With feature of uniform granule,low noise,low consumption of energy,compact structure,easy operation and easy to clean.Adopted German reductor motor,structural durability.
Specifications:
Model
Chamber Calibre (mm)
Crush Capacity (kg/H)
Rotating Blade (Pcs)
Fixed Blade (Pcs)
Motor (Kw)
External Dimension LxWxH (mm)
Weight (kg)
SG-5641
410x560
350-650
27
2x2
11
1165x885x1930
1120
Note:The crushing capacity depends on the diameter of screen mesh.
※We reserve the right to change specifications without prior notice.
Working Principle of a Plastic Shredder:
Power Supply & Motor Operation
The shredder is powered by an electric motor, which is connected to a gearbox.
The motor has forward and reverse switches to control the rotation direction of the shredder shafts (rotors).
Dual-Shaft Interaction
Most industrial shredders use two counter-rotating shafts (rotors) equipped with interlocking blades or "teeth."
The gears in the gearbox transmit power to the main shaft, while a secondary gear system drives the opposite shaft to rotate in the reverse direction.
Material Feeding
Plastic materials (e.g., bottles, films, pipes, or scrap) are fed into the top hopper of the shredder.
The rotating blades on the shafts grip and pull the plastic into the shredding chamber.
Shredding Mechanism
Shearing: Blades from each shaft interlock and cut the plastic like a pair of scissors.
Crushing: The gap between blades compresses the plastic, breaking it into smaller pieces.
Tearing: The rotational force pulls and rips flexible plastics (e.g., films) apart.
As the shafts rotate in opposite directions, the blades shear, crush, and tear the plastic through mechanical force:
The blades are staggered and arranged in a specific pattern to ensure multi-directional cutting (horizontal and vertical), enhancing shredding efficiency.
Screen/Grille Separation
Below the shredding chamber, a screen or grille with predefined hole sizes acts as a filter.
Only pieces small enough to pass through the screen are discharged, while larger pieces are retained for further shredding.
Discharge & Collection
The shredded plastic particles (shreds) fall through the screen and are collected in a hopper, conveyor belt, or storage bin for subsequent processing (e.g., washing, melting, or granulation).
Safety & Control Systems
Many shredders include overload protection (e.g., automatic reverse when jammed) and PLC (Programmable Logic Controller) systems to monitor and adjust speed, torque, and operation modes, ensuring safe and efficient performance.
