Wood Crusher Type HL UNI 7/5

The Two Shaft Shredder HL UNI 7-5 is a versatile, mid-scale industrial dual-rotor shredder designed for multi-purpose commercial recycling, in-house factory scrap reduction, and medium-throughput waste processing.

The “UNI” (Universal) designation represents an adaptable cutting geometry and drive setup engineered to process both rigid solids and flexible materials. Powered by dual synchronized drive units (typically 2 × 37 kW / ~75 kW total power or modular 75 HP configurations) over an approximate 700 mm to 750 mm cutting bed, the HL UNI 7-5 provides high shearing torque within a compact footprint that easily integrates into standalone workstations or existing automated recovery lines.

• Cutting Chamber Dimensions: Approx. 700 mm to 750 mm active rotor width with customized hopper feed apertures.
• Drive Power Rating: Dual high-torque electric drive motors (typically dual 30 kW to 37 kW motors totalling 60 kW to 75 kW / ~75–100 HP equivalent).
• Cutting Rotor Speed: Low-speed, high-torque counter-rotation operating between 18 RPM and 35 RPM.
• Knife Discs: High-grade alloy tool steel blades (such as Hardox, D2, or 42CrMo) available in narrow-to-mid thicknesses (typically 20 mm, 30 mm, or 50 mm).
• Infeed Hopper Options: Standard open gravity-feed hoppers, sound-dampened enclosures, or integrated hydraulic wheelie bin tippers.
• Machine Weight: Approx. 4,500 kg to 7,500 kg robust fabricated steel construction.

• Footprint & Scalability: While the HL 1617, 1622, and 1722 are heavy industrial plant shredders weighing up to 20–30 tonnes for municipal dumps and car tires, the HL UNI 7-5 is a compact commercial unit designed for facility-floor deployment and medium-tonnage operations.
• Power & Energy Consumption: Consuming 60 kW to 75 kW compared to 150 kW to 264+ kW on the larger series, the UNI 7-5 significantly lowers electrical draw and operating costs for regional facilities and private industrial plants.
• Narrow Blade Precision: The UNI 7-5 is frequently outfitted with thinner cutting discs (20 mm to 30 mm), delivering finer strip sizes suited for document destruction, confidential e-waste shredding, and plastic re-granulation preparation.

The HL UNI 7-5 processes a diverse spectrum of non-homogeneous commercial materials:

• Production & Packaging Plastics: Injection runners, defective blow-molded bottles, packaging films, plastic pallets, and small drums.
• Confidential Media & Data Destruction: Hard drives, SSDs, magnetic tapes, security archives, confidential corporate paper files, and uniform destruction.
• Electronic Scrap (WEEE): Small domestic appliances, circuit boards, power tools, printers, and computer towers.
• Light Industrial & Automotive Scrap: Aluminium cans, radiator scrap, wire harnesses, automotive interior plastic trim, and light sheet metal stamping scrap.
• Organic & Commercial Packaging: Food processing off-spec packaging, cardboard cartons, light timber dunnage, and agricultural nursery trays.

Like all dual shaft shredders, the HL UNI 7-5 operates without a screen to prevent fine material blinding:

• Calibrated Strip Width: Dictated by the exact blade width installed (e.g., 20 mm cutting discs produce uniform 20 mm wide strips).
• Controlled Tear Length: Controlled by the hook tooth profile and rotational speed differential between the two shafts.
• Continuous Free-Fall Discharge: Material drops through the open base directly into collection bins, Gaylord boxes, or extraction belt conveyors.

• Immediate Volume Reduction: Compresses bulky hollow packaging, electronics, and plastics at ratios between 4:1 and 6:1, drastically reducing on-site bin rentals and haulage frequency.
• Value-Added In-House Processing: Allows manufacturers to shred defective plastic parts on site and re-feed the regrind directly back into extruders, lowering raw virgin material costs.
• Certified Security Compliance: Delivers tamper-proof on-site destruction of sensitive electronic data, proprietary product prototypes, and branded packaging to prevent counterfeit resale.

To prevent machine damage when processing mixed scrap:

• Microprocessor-controlled current sensors continuously monitor electric motor amperage.
• If an oversized or uncrushable metallic object causes an instantaneous resistance spike, the PLC stops shaft rotation in milliseconds.
• The shafts immediately reverse rotation for several cycles to reposition the piece before attempting forward rotation.
• If the obstruction cannot be cleared after three automated reverse cycles, the shredder safely shuts down, sounds an operator alert, and enables safe manual inspection.

The machine complies with Australian Machine Safety Standards (AS/NZS 4024):

• Interlocked Maintenance Hatches: Access covers and hopper doors feature dual-channel safety limit switches that immediately disable power when opened.
• Hopper Infeed Baffles: Heavy-duty rubber and steel deflectors prevent projectile kickback during aggressive shearing of brittle materials.
• Emergency Stop Stations: Dual-circuit mushroom E-stops positioned directly on the operator console, hopper exterior, and conveyor interfaces.
• Thermal & Overload Protection: Electronic overload relays prevent motor burnout during continuous multi-hour production shifts.

• Scraper Comb Alignment: Regularly inspecting the internal cleaning combs to ensure they remain centered between cutting discs, preventing film, string, and strapping from wrapping around the shafts.
• Blade Hook Inspection: Checking the cutting hooks for wear or rounding. Modular discs allow individual worn blades to be rotated or replaced without disassembling the entire shaft line.
• Gearbox & Drive Lubrication: Monitoring synthetic oil levels in the planetary gearboxes and changing fluid at scheduled 1,500-to-2,000-hour service intervals.
• External Bearing Greasing: Periodically applying extreme-pressure grease to external bearing blocks to keep labyrinth seals clear of dust and liquid contamination. Smart Waste Australia delivers comprehensive scheduled service contracts, genuine replacement tooling, and emergency nationwide repair coverage.