| Architectural Engineering & Core Performance Mechanics |
| The Vermeer HG400TX Stage V/T4F is a highly versatile, self-propelled tracked horizontal grinder designed to provide an entry-level solution for arborists, recycling firms, and land-clearing contractors operating in small, narrow, or restricted jobsites. It delivers an optimal balance of robust functionality, site mobility, and affordability when processing green waste, composting materials, tree stumps, and rough wood debris. The distinguishing foundation of the TX model is its heavy-duty integrated undercarriage, engineered with a rigid track frame and steel double-grouser track shoes. This system provides a substantial 220 mm of ground clearance and a low ground bearing pressure of 60 kPa (8.7 psi), allowing the self-propelled machine to traverse steep slopes, uneven jobsite terrain, and soft soils with excellent stability and traction. Power is supplied by a high-torque 4-cylinder Caterpillar C4.4-C173 industrial diesel engine that produces 173 hp (129 kW) and 750 Nm of torque while meeting strict Stage V / Tier 4 Final emission regulations. The engine drives the grinding rotor via an automated dry clutch assembly featuring a hydraulic automatic engagement loop governed by the electronic throttle. The infeed system incorporates an open processing table with large flared walls that prevent material bridging, alongside an adjustable infeed tailgate that can be lowered to provide additional length for supporting long timbers. Materials are drawn in via a durable steel-chain conveyor floor and a heavy structural upper feed roller fitted with 15 aggressive gripping teeth. This roller is driven by twin independent hydraulic motors that generate a downforce pressure of 10 MPa; its built-in Feedcrush function delivers automated downward compression to shatter and firmly secure irregular or smaller bundled materials, maximizing volumetric feeding efficiency. Processing fragmentation is performed by a 905 lb (410.5 kg) duplex cutting drum with a 29.6-inch (75.2 cm) diameter spinning at 1100 RPM, producing an aggressive knife-tip speed of 9048 ft/min (2757.8 m/min) for deep material shattering. The machine features an innovative sideload dual-screen configuration, allowing a single operator to swap square-mesh sizing screens manually from the side of the machine in minimal time. Electronic control architecture is built around a premium Danfoss Vermeer Plus+1 micro-controller system offering four distinct feed speed options for precise control. This is fully integrated with a long-range wireless radio remote control operating up to 98.4 feet (30 meters), giving the operator full control over tracking, feeding, and the Feedcrush function from a safe vantage point. |
| General Weight Parameters & Physical Dimensions (Long Infeed Modification) |
| Maximum Transport Length |
26.2 ft (8.0 m) |
| Maximum Transport Width |
6.6 ft (2.0 m) |
| Maximum Transport Height |
8.5 ft (2.6 m) |
| Total Operational Weight (Including Tracked Undercarriage) |
17600 lbs (7983.2 kg) |
| Acoustic Signature Level (Sound Power) |
118 dB(A) |
| Diesel Powertrain & Drive Belt Components (Caterpillar C4.4) |
| Engine Manufacturer and Model Identifier |
Caterpillar C4.4-C173 (Inline industrial turbo-diesel engine) |
| Cylinder Arrangement and Emission Rating |
4 cylinders; Stage V / Tier 4 Final (T4F) compliant |
| Maximum Gross Engine Power Output |
173 hp (129.0 kW) |
| Maximum Peak Engine Torque Output |
553.2 ft-lb (750.0 Nm) |
| Fuel Tank Volumetric Capacity |
50 gal (189.3 L) |
| Fuel Type Specification |
Diesel Fuel |
| Maximum Fuel Consumption Rate at Peak Load |
9.5 gph (36.0 L/h) |
| Recommended Oil Specification and Viscosity Grade |
CAT DEO-ULS SAE 10W-30 (API CJ-4 compliant low-ash oil) |
| Total Engine Oil Volume Including Filters |
3.7 gal (14.0 L) |
| Air & Oil Filtration Component Quantities |
1 two-stage industrial dry air cleaner; 2 spin-on oil filters |
| Engine Cooling System Capacity (Block and Radiator) |
6.9 gal (26.1 L) |
| Cooling Fan Subsystem Configuration |
1 primary engine cooling axial fan; 1 dedicated Charge Air Cooler (CAC) fan |
| Charging Alternator Specifications |
12 V DC system voltage; 150 Amp heavy-duty output rating |
| Clutch Subsystem Type and Engagement Method |
Auto clutch (dry type); fully hydraulic automatic engagement governed by electronic system |
| Main Rotor Drive Belt Specification |
Premium high-torque wedge-profile V-belt, type SPB3900La |
| Standard Material Infeed & Feedcrush System Specifications |
| Infeed Processing Table Geometry Dimensions |
Table Width: 48.6 in (123.4 cm); Table Hopper Depth: 17.6 in (44.7 cm); Table Length (Option 1): 7.6 ft (2.3 m) |
| Total Infeed Table Hopper Volumetric Capacity |
1.3 cu yd (1.0 cu m) |
| Material Feed Loading Height (Table Deck to Ground) |
3.9 ft (1.2 m) |
| Infeed Conveyor Floor Assembly Type and Material |
Heavy-duty steel chain design; dragging flighted bed manufactured from solid steel plate |
| Conveyor Roller Profiles and Drive Type |
Drive roller and front tension idler roller constructed of solid steel; driven via hydraulic motor |
| Upper Compression Feed Roller Geometry Dimensions |
Roller Length: 61.7 in (156.7 cm); Roller Width (Working span): 38.1 in (96.8 cm); Roller Outer Diameter: 15 in (38.1 cm) |
| Feed Roller Assembly Component Weights |
Bare roller weight: 295 lbs (133.8 kg); total roller weight including heavy pivot arm: 868 lbs (393.7 kg) |
| Feed Roller Material and Gripping Elements |
Fabricated from heavy structural steel; features 15 aggressive tracking teeth |
| Infeed Throat Gateway Opening Dimensions |
15.9 in x 25 in (40.5 cm x 63.5 cm) structural opening width and height |
| Maximum Operational Material Feed Height Opening |
15.9 in (40.4 cm) maximum vertical pivot lift |
| Feed Roller Drive Power & Hydraulic Downforce |
Driven by 2 independent high-torque hydraulic motors; active downward hydraulic compression (Feedcrush) pressure: 10 MPa |
| Intake Zone Operator Safety Hardware |
1 Thrown Object Deflector shield; protective flexible safety curtain sizing: 15.9 in x 25 in (40.5 cm x 63.5 cm) |
| High-Velocity Duplex Grinding Drum Assembly |
| Cutting Mechanism Housing Interface Area (Millbox) |
15.9 in x 25 in (40.5 cm x 63.5 cm) structural grinding inlet |
| Total Weight of Grinding Drum Assembly |
905 lbs (410.5 kg) complete with central rotor shaft |
| Cutting Drum Core Structural Geometry |
Outer cutting path diameter: 29.6 in (75.2 cm); cutting width: 25.9 in (65.8 cm) |
| Drum Cylindrical Outer Skin Thickness |
0.9 in (2.3 cm) thick plate steel wrapper for maximum structural momentum |
| Rotor Rotational Speed Matrix Specifications |
1100 RPM operational drum speed under full load; tip speed setting: 1100 RPM |
| Rotor Cutter Knife Tip Linear Velocity |
9048 ft/min (2757.8 m/min) for aggressive material shattering |
| Main Shaft Supporting Bearing Architecture |
Heavy-duty double-row cylindrical roller bearing assembly; inner race bore diameter: 0.3 in (0.8 cm) |
| Rotor Cutting Tip Quantities and Options |
15 indexable replacement cutter tips (knives); 3 standard styles available: Standard flat (Tips), curved hook (Bear knife), and profile (Shaper); up to 5 optional tip variants supported |
| Sizing Screens & Anvil Subsystems (Material Calibration) |
| Screen Loading Architecture & Maintenance Interface |
Sideload Screen Design; dual screens are stacked one on top of another for quick manual side loading |
| Total Screen Elements & Wear Faces |
2 separate semi-circular screens; 2 available structural indexing wear sides |
| Single Screen Weight & Mesh Geometry Profile |
Weight per screen element: <55 lbs (25.0 kg); standard mesh type: Square; up to 6 optional screen variants supported |
| Anvil Assembly Structural Metrics |
Anvil type: Fixed (Fix); features 2 available position adjustments / dimensional configurations |
| Product Discharge System — Single-Belt Conveyor |
| Discharge Conveyor Overall Geometrical Layout |
Total structural length: 17.2 ft (5.2 m); transport belt width: 17.7 in (45.0 cm) |
| Conveyor Belt Splicing & Velocity Performance |
Equipped with a mechanical/vulcanized belt splice connection: Yes; linear travel velocity: 725 ft/min (221.0 m/min) |
| Belt Idler Assembly Architecture Metrics |
Includes 1 return roller; tension idler roller diameter: 0.2 in (0.6 cm); dual (2) heavy idler roller bearings |
| Drive Roller Dimension Profiles & Separators |
Standard drive roller diameter: 7.9 in (20.0 cm); magnetic head drive roller diameter (metal separator): 7.9 in (20.0 cm) |
| Discharge Hydraulic Drive System Performance |
1 independent high-torque hydraulic drive motor; 2 drive motor shaft supporting bearings |
| Product Discharge Stacking Height (Load Height) |
6.9 ft (2.1 m) absolute vertical discharge drop point |
| Centralized Hydraulic & Automatic Clutch Fluid Systems |
| Main Hydraulic Fluid Reservoir Capacity |
53 gal (200.6 L) total tank volume; recommended premium mineral oil: HM68 |
| Main Hydraulic Oil Conditioning Hardware |
Full-flow replaceable cartridge filter element (Filter); integrated with 1 heavy-duty oil cooler radiator |
| Automatic Clutch Hydraulic Circuit Capacity |
40 gal (151.4 L) fluid tank volume; recommended fluid: HM68; filtered via independent replacement element; 1 dedicated cooler |
| Main System Hydraulic Pump Type & Pressure Ceiling |
High-pressure Gear Pump configuration; maximum primary system safety relief valve setting: 3000 psi (206.8 bar) |
| Electrical Architecture, Telemetry Panels & Remote Controls |
| System Operating Voltage & Circuit Defense |
12 Volt DC electrical network; includes 1 heavy-duty battery; built-in automated electronic System Protection: Yes |
| Primary On-Machine Operator Telemetry Interface |
All-weather station housing a digital Liquid Crystal Display (LCD) screen |
| Wireless Radio Remote Control System Loop |
Industrial wireless radio frequency transmitter (Wireless type); absolute effective operational working range: 98.4 ft (30.0 m) |
| Handheld Transmitter Functional Telemetry Capabilities |
Provides full real-time Engine Information, comprehensive Machine Information, active operational error tracking (Operational Faults), and physical toggles for machine function Switches |
| Transmitter Battery Configuration and Tuning Control |
Equipped with 1 heavy maintenance-free battery pack; integrated manual or automatic frequency Channel Setting: Yes |
| Self-Propelled Crawler Undercarriage & Track Drive Metrics |
| Undercarriage Frame Type and Structural Support |
Heavy steel crawler undercarriage base; track frame configuration: Rigid frame construction |
| Crawler Track Shoe Profile and Material |
Solid steel track chains fitted with Double Grouser grousers |
| Undercarriage Ground Clearance Profile |
220 mm absolute clearance distance from frame base to solid ground |
| Track Drive Hydraulic Infrastructure Components |
Track drive hydraulic pump type: Gear pump; track propulsion motor type: High-torque Planetary motor |
| Undercarriage Braking Mechanism Configuration |
Track brake safety type: Normally closed multi-disc spring-applied brake, hydraulically released |
| Crawler Track Ground Contact Geometry |
Total length of track chain resting on ground: 2055 mm; baseline track shoe width (Option One): 350 mm |
| Operational Ground Bearing Pressure Index |
Ground contact weight signature on hard terrain with 350 mm shoes: 8.7 psi (60.0 kPa) |
| Track Tensioning Hardware and Idler Layout |
Tensioner system type: Spring-applied, hydraulically-released mechanism; total dual (2) front track idlers |
| Track Drive Pump Volumetric Flow and Pressure Cap |
Hydraulic pump output flow rate at maximum engine RPM: 21.1 gpm (80.0 L/min); track circuit relief valve pressure: 3000 psi (206.8 bar) |
| Undercarriage Ground Travel Velocity Ceiling |
Maximum machine self-propulsion travel speed: 0.6 mph (1.0 km/h) |
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