H 7 Wood Chippers

The Wood Chipper H-7 is a mid-range commercial wood chipper engineered to process tree limbs, branches, logging slash, and fibrous green waste up to 7 inches (175–180 mm) in diameter.

Positioned between compact entry-level units and heavy forestry machines, the H-7 is designed for professional arborists, municipal tree management teams, utility line contractors, and commercial orchardists who require high chipping capacity while retaining mobile road-towing convenience.

• Maximum In-Feed Capacity: 7 inches (~175 mm to 180 mm) continuous cutting diameter.
• Cutting System: High-mass, precision-balanced rotary flywheel disc or drum fitted with dual reversible hardened alloy steel blades.
• Engine Output: High-torque 35 HP to 50 HP industrial diesel or commercial petrol engine options.
• Hydraulic System: Twin serrated hydraulic in-feed rollers with variable speed and auto-reverse functionality.
• Discharge Chute: 360-degree manually or hydraulically rotating discharge chute with an adjustable chip deflection hood.
• Mobility / Chassis: Single-axle road trailer with ADR-compliant running gear, or a heavy-duty rubber track undercarriage for rough terrain.

• Capacity Upgrade: The H-7 accepts timber up to 7 inches (180 mm), compared to the 5-inch (125 mm) throat limit of the H-5, allowing it to process whole trunk sections and broad branch crotches.
• Twin In-Feed Rollers: The H-7 utilizes powerful twin horizontal or vertical feed rollers to crush and drag dense hardwood branches, whereas smaller machines often rely on single-roller configurations.
• Increased Engine Power: Powered by 35–50 HP industrial power plants (compared to 18–25 HP on the H-5), delivering higher flywheel inertia to prevent bogging on dense eucalyptus and seasoned hardwood.
• Wider Hopper Throat: A wider intake hopper throat opening reduces the labor required for manual trimming and branch pre-cutting before feeding.

The H-7 is engineered for tough Australian wood varieties and bulky green waste streams:

• Hardwood and Softwood Limbs: Eucalyptus, pine, acacia, oak, and gum branches up to 7 inches thick.
• Forked Tree Prunings: Spreading branches, bushy brush, and heavy canopies without requiring extensive chain-sawing.
• Orchard & Vineyard Clear-out: Whole fruit trees, citrus boughs, avocado prunings, and woody vineyard stock.
• Secondary Timber Waste: Untreated timber offcuts, pine pallets, and sawmill edgings.

The H-7 features a built-in electronic No-Stress feed control system that optimizes throughput and protects drive mechanics:

• It continuously measures engine RPM during high-load chipping operations.
• If dense wood causes engine speed to fall below the rated cutting torque band, the system automatically pauses the hydraulic feed rollers.
• Once the heavy cutting rotor regains full operational RPM, the feed rollers restart automatically.
• This eliminates engine stalls, prevents thermal clutch slip, reduces drive belt wear, and keeps knife blockages to a minimum.

Loose leafy foliage, tree pruning’s, and branched limbs contain up to 85% void air space:

• Volume Reduction: The H-7 delivers volume compression ratios between 7:1 and 10:1, reducing up to 10 truckloads of bulky branches into a single consolidated load of wood mulch.
• Lower Disposal Invoices: Significantly lowers green waste tipping fees and skip bin rental costs by maximizing container weight and density.
• Mulch Valorisation: Produces clean, uniform wood chips suitable for landscaping ground cover, soil erosion control, compost feedstock, or biomass heating.

[H3] What workplace safety systems are built into the Wood Chipper H-7?

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

• Enclosed Safety Feed Control Bar: A multi-position mechanical safety bar surrounds the in-feed hopper face, enabling instant roller stop or reverse from anybody contact point.
• Deep Intake Safety Hopper: An elongated hopper tray ensures an operator cannot physically contact the feed rollers or cutting blades with arms fully extended.
• Emergency Stop Stations: Dual-channel mushroom E-stops positioned above the intake tray and near the engine bay for immediate shutdown.
• Rotor Lock Mechanism: A mechanical safety pin locks the rotor flywheel in a fixed position to ensure operator safety during blade servicing and inspections.

• Road-Towable Trailer: Single-axle chassis equipped with ADR-approved lighting, electric or mechanical overrun brakes, and heavy-duty jockey wheels for highway transit behind a standard ute or work truck.
• All-Terrain Tracked Chassis: Fitted with independent rubber crawler tracks for steep embankments, rail corridors, forestry trails, and soggy ground where towing vehicles cannot access.
• Tractor PTO-Driven System: Heavy-duty 3-point linkage mount driven via tractor 540/1000 RPM PTO shafts for agricultural and council acreage maintenance.

Routine servicing ensures consistent chipping efficiency and prevents costly breakdowns:

• Blade Care & Clearance: The H-7 utilizes double-sided reversible alloy steel knives. Inspect and reverse or sharpen blades every 30 to 50 operating hours, keeping the bed anvil gap set to 1.0–1.5 mm.
• Hydraulic System Checks: Regularly inspect hydraulic oil cleanliness, change return line filters, and check feed roller high-pressure hoses for abrasion.
• Drive Belt Tension: Check and re-tension multi-V drive belts to maintain maximum power transfer between the engine and the rotor.
• Bearing Greasing: Lubricate rotor shaft pillow blocks and feed roller pivot bearings daily with high-temperature, extreme-pressure grease. Smart Waste Australia provides nationwide scheduled servicing, genuine replacement knives, and mobile breakdown repairs.