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Twin-Shaft Metal Shredder
A twin-shaft metal shredder, also known as a dual-shear shredder, is a heavy-duty industrial machine designed primarily for the initial size reduction of bulky, hard-to-process scrap metal and other solid waste materials. It is a cornerstone machine in modern recycling facilities.
Technical parameters
| Type | power | Cutter Qty PCS | reducer | chamber mm | feeding port | overall size mm | weight T | capacity (T/h) |
| RK-800 | 15kw*2 | 30 | 400 | 600*388 | 1000*766 | 1820*800*1930 | 2.1 | 0.5-0.8 |
| RK-1000 | 22kw*2 | 20 | 500 | 640*588 | 1170*990 | 3260*1300*2370 | 3.5 | 1-1.5 |
| RK-1200 | 37kw*2 | 30 | 355 | 1200*788 | 1600*1200 | 4700*2000*2700 | 8 | 2.5-3 |
| RK-1500 | 55kw*2 | 30 | 400 | 1500*1188 | 1900*1450 | 5000*2200*2900 | 18 | 8-10. |
| RK-1800 | 75KW*2 | 36 | 400 | 1800*1188 | 2300*1450 | 5300*2150*3000 | 20 | 12-15. |
| RK-2000 | 90kw*2 | 24 | 450 | 2000*1188 | 2300*1500 | 5400*2150*3000 | 25 | 20-25. |
| RK-2200 | 110kw*2 | 28 | 240 | 2200*1578 | 3100*2500 | 6200*2700*3500 | 33 | 26-30 |
| RK-2400 | 132kw*2 | 24 | 240 | 2400*1678 | 3200*2600 | 7300*2800*3800 | 38 | 30-35. |
| RK-2800 | 185kw*2 | 28 | 260 | 2800*2000 | 3700*3000 | 7800*2800*3800 | 45 | 35-40 |
Working Principle
The core mechanism involves two parallel, counter-rotating shafts equipped with a series of cutting discs or "rotors." As material is fed into the hopper, the intermeshing cutters on the two shafts grab, shear, tear, and crush the material between them. The low rotational speed (typically 6-25 RPM) combined with extremely high torque allows it to handle tough, dense objects. Advanced models feature an automatic sensor system that reverses the shafts if an overload is detected, preventing jams and damage.
Key Features
Low-Speed, High-Torque: Optimized for maximum cutting force and energy efficiency, rather than high-speed impact.
Robust Construction: Built with heavy-duty steel plate frames. Cutting rotors are typically made from high-grade, wear-resistant alloy steel (e.g., Cr12MoV, 42CrMo, D2) and are often reversible or replaceable to extend service life.
High Reliability & Stability: Engineered for continuous operation with minimal vibration and noise.
Intelligent Control: Usually equipped with a PLC control system for automated operation, including start/stop, reversal, and overload protection.
Versatility: Can process a wide range of materials beyond metals, making it a flexible asset.
Applications & Materials
It is exceptionally effective in shredding:
Scrap Metal: Car bodies, appliances (white goods), light gauge metal, drums, non-ferrous scrap, and production waste.
Hazardous Waste: Preparation of items like electronic waste (e-waste) for further processing.
Bulky Waste: Tires, plastics, wood, municipal solid waste (MSW), and industrial waste.
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