Twin-Shaft Shredding Architecture for Mixed Scrap
The TG-2200 is a twin-shaft metal shredder built around a 2000 HP (1492 kW) drive system, designed to process mixed ferrous and non-ferrous scrap at a rated throughput of 80 tons per hour. Two counter-rotating shafts carry bolt-on cutting discs with alloy tool-steel tips that grip, shear, and reduce feedstock to a homogeneous particle size before downstream separation. The slow-rotating shaft design (typical 12–22 RPM) keeps noise and dust generation lower than high-speed hammer mills, which matters for European and North American plants operating under strict emissions and workplace-noise limits.
Mixed scrap streams arriving at a shredding yard rarely arrive clean. Auto bodies, white goods, light-gauge stamping offcuts, aluminum castings, and electrical motors may enter the same hopper in a single shift. The TG-2200 handles this variability through a wide feed opening and a feed roller system that maintains consistent material flow into the cutting chamber, reducing the bridging and stalling that single-shaft units experience with irregularly shaped feed.
Cutting System and Wear Component Design
Each shaft is driven independently, allowing torque distribution to adapt when one shaft encounters a denser or thicker section of the charge. The cutting discs are manufactured from hardened alloy tool steel and are bolted to the shaft using a hex-bolt retainer system that allows individual disc replacement without removing the entire shaft assembly. Hard-facing is applied to leading edge profiles, and replacement tips are available as standard spare parts.
Key wear parts the operator will interact with
- Cutting discs and bolt-on tips — inspected daily, typically replaced every 600–1200 operating hours depending on feedstock abrasiveness
- Side liners and chamber wear plates — bolted AR400-grade steel, replaceable without welding
- Feed roller gripping teeth — replaced as a set to maintain consistent material pull-through
- Shaft seals and bearing protectors — inspected during scheduled lubrication cycles to prevent contamination ingress
Throughput, Feedstock, and Application Boundaries
Rated Capacity
80 tons per hour on mixed shredder feed (auto hulks, light iron, white goods, mixed non-ferrous). Actual throughput depends on feed density, moisture content, and target particle size. Denser compressed bales may reduce effective TPH by 15–25%.
Typical Feedstock
End-of-life vehicle bodies, household appliance shells, light-gauge steel stamping waste, aluminum profiles and castings, #2 steel, mixed turnings and borings. Dense scrap bales above 1.5 tons/m³ may require pre-shear or density reduction feeding.
Items that should NOT be fed directly without pre-checking include sealed gas cylinders, pressurized vessels, large engine blocks above the feed opening size, and any material containing free mercury switches. For auto-shredder residue (ASR) lines, the TG-2200 serves as the primary size-reduction stage upstream of downstream non-ferrous recovery and magnetic separation.
Drive System and Electrical Configuration
The 2000 HP main drive is configured as a direct-coupled arrangement with a heavy-duty planetary or helical-bevel gearbox depending on regional electrical standards and buyer preference. Both 50 Hz (European standard) and 60 Hz (North American standard) motor configurations are available; the buyer should specify voltage and frequency at inquiry to receive the correct motor and control panel pairing. Soft-start or variable-frequency drive (VFD) options are offered to manage inrush current on plant electrical systems, which is particularly relevant for older yards with limited grid capacity.
Compliance and Certification
The TG-2200 is supplied with CE marking for European market conformity, covering the machinery's electrical, mechanical, and safety systems per the Machinery Directive. For North American buyers, the unit can be configured to meet ANSI/OSHA guarding requirements and UL-listed control panel standards on request. ISO 9001 quality management governs the manufacturing process.ess.
Downstream Integration Considerations
In a complete scrap processing line, the TG-2200 typically feeds into the following stages. Buyers planning a turnkey installation should consider these as connected procurement decisions rather than optional add-ons:
- Magnetic separation — overhead suspended magnets or drum separators remove ferrous fraction from the shredded stream
- Eddy current separation — recovers aluminum and other non-ferrous conductive metals from the residue
- Discharge conveyor with metal detection — catches unshreddable tramp metal that could damage downstream equipment
- Dust collection and air separation — manages fugitive emissions and light fraction (textile, plastic, foam) removal
天工 can supply the shredder as a standalone unit or as part of an integrated turnkey system. Buyers purchasing the shredder only should provide details of their existing downstream equipment to confirm discharge height and conveyor interface compatibility.
Buyer FAQ
What minimum order quantity applies to the TG-2200?
One unit. The shredder is a capital equipment purchase and is sold per machine, not in batch quantities. Spare parts packages and wear part kits can be ordered separately.
Is the shredder CE certified for the European market?
Yes. The TG-2200 carries CE marking under the Machinery Directive. The full technical construction file and Declaration of Conformity are provided with shipment. UL-listed control panel configuration for North America is available on request.
What is the typical production lead time?
Lead time depends on current production schedule, motor configuration (50 Hz or 60 Hz), and whether a standard or custom control panel is required. A confirmed lead time is provided in the formal quotation after inquiry review.
How is the 80 TPH rating determined?
The 80 tons per hour figure is rated on mixed shredder feed of average bulk density. Throughput on a specific buyer's feedstock will vary with material density, moisture, and target particle size. We recommend sending representative feedstock photos and density data at inquiry for a more accurate estimate.ate.
What after-sales support and spare parts are available?
Wear parts (cutting discs, tips, side liners, feed roller teeth) are stocked as standard spares. Commissioning supervision and operator training are available as optional services. A dedicated spare parts list is provided with the machine documentation for your maintenance planning.
Request a Quotation for the TG-2200
Request a Quotation for the TG-2200
To receive an accurate quotation and lead time, provide your plant voltage and frequency (50 Hz or 60 Hz), typical feedstock types and estimated monthly volume, target discharge particle size, and whether you need the shredder as a standalone unit or as part of an integrated turnkey line with magnetic separation and downstream equipment. Mention your destination port for shipping and any specific certification requirements (CE, UL, ANSI) applicable to your region.
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