19.5HP Heavy Duty Drum Wood Chipper

The SIVFORX GS120PRO is the PRO performance edition of our wheeled tow-behind wood chipper lineup, featuring a 19.5HP / 500cc large-displacement gasoline engine and an upgraded 150 mm maximum chipping capacity - engineered for high-frequency, high-intensity professional chipping work. The drum cutting system with dual moving blades and a fixed counter knife powers through hardwood limbs, brush, and even small logs with ease. With 19-inch large-diameter all-terrain tires and a jack-stand guide-wheel tow bar, towing is stable and site-to-site transitions are effortless. Electric start delivers one-key ignition for maximum efficiency and operator comfort.

Building on the proven GS120-121 platform, the GS120PRO comprehensively upgrades power and cutting capacity - making it the ideal step-up choice for landscaping companies, municipal maintenance crews, equipment rental businesses, and mid-sized farms.

Founded in 2012, SIVFORX has shipped over 15,000 units to 30+ countries. Our reputation is built on outstanding value, rugged reliability, and global customer trust.

Key Highlights: 19.5HP Powerhouse | 150mm Max Chipping | Electric Start | 19" Large Tires | PRO-Grade Performance

19.5HP Power - 150mm Chipping Muscle
The 500cc large-displacement engine delivers abundant torque, effortlessly handling hardwood limbs up to 150 mm in diameter. Compared to 120 mm-class machines, productivity jumps by over 30% - less pre-cutting, more chipping. Feed large-diameter branches straight in.

Electric Start + Recoil Backup
One-key electric start saves time and effort. A backup recoil starter provides peace of mind during remote field operations - dual assurance, worry-free.

19-Inch All-Terrain Tires
Larger tires than comparable models deliver superior ground clearance and traction. Combined with the jack-stand guide-wheel tow bar, hitching and unhitching are smooth and easy. Stable towing across mud, gravel, and grass surfaces.

Drum Cutting - Uniform Output
Dual moving blades work in sync with the fixed bed knife to produce consistently sized chips (10–30 mm), ready for mulch, composting, or biomass fuel feedstock.

High-Carbon Alloy Steel Blades - Durable & Resharpenable
Vacuum heat-treated to HRC 56–60, these blades resist impact and wear. When dull, simply remove, sharpen, and reinstall - dramatically lowering long-term operating costs.

360° Rotatable Discharge Chute
Direct chips precisely where you need them - into a collection bag, trailer, or pile - for maximum job site efficiency.

Comprehensive Safety
Emergency stop safety switch + anti-kickback hopper guard + engine auto-throttle-down overload protection - triple-layer safety design for confident operation.

Commercial Landscaping Companies
High-frequency, high-intensity commercial landscape maintenance demands professional equipment. The GS120PRO's large-diameter chipping capacity and powerful engine handle all-day continuous operation, significantly boosting crew productivity.
 

Municipal Roadway Maintenance
Pruning waste from urban streets and highway greenery often includes large-diameter limbs. At 150 mm capacity, the GS120PRO processes them directly - no pre-sawing required.
 

Mid-Sized Orchards & Farms
Apple, citrus, olive, and other mid-sized orchards generate heavy pruning volume each season. The GS120PRO covers large areas efficiently with its PRO-grade throughput.
 

Equipment Rental
As the PRO-tier offering in a rental fleet, larger chipping capacity and heavier-duty configuration command higher rental rates and deliver lower repair frequency - better ROI for rental operators.
 

Biomass Feedstock Processing
150 mm diameter capability accommodates a wider range of wood waste types. Uniform, controlled chip size makes the GS120PRO an ideal front-end processor for biomass pellet plants and power stations.

500cc Large-Displacement Engine:
●Tuned for sustained high-load operation with an enhanced cooling system to prevent overheating during extended runs.
Dynamically Balanced Rotor:
●The complete rotor assembly is dynamically balanced after welding, with residual unbalance controlled to G6.3 grade or better for smooth high-speed operation.
Reinforced Frame:
●Structural upgrades accommodate the extra vibration and torque from the higher-output engine - built to last under demanding conditions.
Three-Layer Protective Finish:
●Sandblasting → epoxy primer → polyurethane topcoat provides weather-resistant rust protection for confident outdoor storage.

Case 1: Municipal Landscaping Contractor - Thailand
Customer: Major landscaping contractor serving the Bangkok metropolitan area
Quantity: 15 × GS120PRO
Application: City-wide park and streetscape green waste processing
Client Feedback: "The GS120PRO's 150 mm capacity boosted our on-site efficiency dramatically. Branches over 120 mm used to require sawing before feeding - now they go straight in. Our crews also love the electric start. We've replaced all our old chippers with GS120PRO units."
 

Case 2: Olive Plantation - Argentina
Customer: Olive growing & oil production enterprise (800 hectares)
Quantity: 12 units
Application: On-site chipping of heavy pruning waste, chips returned to soil
Client Feedback: "The 19.5HP engine has abundant power and runs steady even during 6–8 hour continuous shifts. Wood chips spread between tree rows effectively suppress weed growth and retain soil moisture. We're considering additional purchases."
 

Case 3: Equipment Rental Company - Germany
Customer: Construction & garden equipment rental business
Quantity: 40–50 units annually
Application: Rental to gardeners, farmers, and landscaping companies
Client Feedback: "The GS120PRO is the star of our chipper rental lineup. The larger chipping capacity covers a wider range of customer needs, and the machines are solidly built with very low repair rates. Customers are highly satisfied with the CE certification and consistent quality."

PRO-Grade Performance:
1. 19.5HP / 150mm chipping capacity - efficiency far beyond standard-class machines.
Professional Durability:
2. High-output engine matched with a reinforced structure, purpose-built for daily high-intensity operation.
10 Years of Brand Trust:
3. Over 15,000 units shipped since 2012, validated by customers in 30+ countries.
Complete Product Range:
4. Pair with GS120-121 (standard) and GST120-01 (tracked self-propelled) for a full product matrix from entry-level to professional.
Reliable After-Sales:
5. 8 authorized service centers worldwide with prompt spare parts supply and expert technical support.

Get in Touch
For pricing, demo videos, or to schedule a factory visit, contact us today.
SIVFORX - PRO Performance, Built for Professionals.

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