HFG II With PTO Drive

he HFG II LS is a high-speed industrial shredder and hammer mill engineered for the rapid size reduction, defibration, and processing of green waste, tree trunks, bark, and untreated timber offcuts.

Unlike low-speed shear shredders, the HFG II LS utilizes a high-speed rotor equipped with free-swinging flail hammers operating over a hardened breaking edge. The aggressive impact action fractures and defibers raw organic materials rather than merely slicing them, producing an open-structured, fibrous fraction ideal for accelerated composting, soil conditioner production, and biomass boiler fuel.

• HFG (High-Speed Flail Shredder): Identifies the dynamic impact-shredding architecture featuring free-swinging, pendulum-mounted hammers that absorb shock against foreign tramp materials.
• LS (Long Stroke / Extended Infeed): Represents the extended chassis and lengthened infeed hopper geometry, allowing direct top-loading of long tree trunks, full pallets, and bulky pruning canopy loads via wheel loaders or timber grapples.

• Cutting & Impact System: Heavy-duty, dynamically balanced high-speed rotor fitted with replaceable, free-swinging alloy flail hammers.
• Drive Power: Heavy-duty industrial diesel engine or stationary electric drive configuration delivering 175 kW to 260 kW of continuous operating power.
• Infeed System: High-capacity slat or steel belt conveyor paired with an aggressive hydraulic floating feed drum to compress bulky canopies.
• Throughput Capacity: High-volume output capable of processing 40 to 80 m3 per hour (depending on moisture and timber density).
• Discharge Mechanism: Extended folding discharge conveyor belt offering generous ejection clearance (typically 3.0 m+) for high-coning stockpiles or direct open-top trailer loading.
• Mobility Configuration: Road-towable multi-axle trailer chassis or stationary skid mounting for permanent sorting plants.

The HFG II LS is optimized for high-volume organic and timber waste streams:

• Green Waste & Prunings: Council tree trimmings, park maintenance cuttings, brush, and fibrous palm species.
• Whole Tree Limbs & Stems: Felled branches, storm debris, and trunk wood within the rated hopper throat clearance.
• Bark & Sawmill Offcuts: Thick tree bark, sawmill slab wood, and untreated timber dunnage.
• Pallets & Crating: Discarded wooden shipping pallets, clean packaging crates, and broken construction timber.
• Organic Waste & Composting Feedstock: Bulky green waste requiring pre-treatment defibration to jumpstart aerobic microbial decomposition.

Conventional knife chippers slice wood cleanly across the grain, creating smooth, flat surfaces with limited surface area.

The HFG II LS uses high-impact flail hammers to split wood along its natural growth fibers, splintering and defibring the timber. This dramatically expands the material’s active surface area, allowing moisture, oxygen, and compost bacteria to penetrate immediately, which cuts total composting maturation cycle times by up to 30% to 50%.

Tramp metals (such as steel wire, nails, fencing posts, and stones) often hide inside raw green waste:

• Rigid fixed knives can shatter or fracture upon striking uncrushable tramp steel, causing major rotor damage.
• The HFG II LS features free-swinging pendulum flail hammers mounted on heavy-duty pivot pins.
• When a hammer strikes a non-shreddable object, it swings backward out of the impact zone, absorbing the shock energy without transferring destructive shear stresses directly into the main shaft or drive bearings.
• Tramp contaminants pass harmlessly across the breaker bar or into a downstream foreign material trap.

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

• Interlocked Maintenance Hoods: Hydraulically opened rotor hoods feature dual-channel safety limit switches that completely isolate the engine and hydraulic drives before access is granted.
• Infeed Anti-Kickback Curtains: Heavy-duty, multi-layered rubber deflector flaps positioned at the hopper mouth stop ejected stones or wood splinters.
• Radio Remote Control: Operators can safely command infeed conveyor speed, forward/reverse feed cycles, and emergency stopping from inside the cab of a wheel loader or excavator.
• Perimeter Emergency Stops: Dual-circuit emergency shutdown buttons located at every critical service point around the trailer chassis.

• Hammer Tip Inspection & Rotation: Reversible hammer tips should be checked regularly and flipped or replaced once the leading wear edges become blunt.
• Breaker Bar (Anvil) Clearance: Inspect and adjust the hardened counter-comb breaker bar to maintain the desired degree of timber defibration.
• Drive Belt Tensioning: Periodically verify the tension and alignment of the banded V-belt drive transmission connecting the main motor to the high-speed rotor.
• Bearing Lubrication: Apply high-temperature, extreme-pressure grease to the spherical roller rotor shaft bearings daily or via an integrated automatic lubrication unit. Smart Waste Australia provides genuine replacement hammers, wear parts, and scheduled nationwide preventative maintenance.