THOR ST Series Soil Stabilizer
THOR ST Soil Stabilizer – 250 hp PTO road reclaimer with 92 tungsten carbide tools, integrated water injection. Build roads from soil in place. Factory-direct price!
◆ Product Overview
The THOR ST Series Soil Stabilizer is a heavy-duty, PTO-driven road reclaiming and soil stabilization machine designed for the construction, rehabilitation, and recycling of rural roads, haul roads, farm access tracks, and unpaved infrastructure corridors. Powered by tractors of 250 hp and above at 1,000 RPM PTO, the THOR ST’s high-energy rotor — equipped with 92 tungsten carbide cutting tools — pulverizes existing road surface, subgrade material, and added binders (lime, cement) into a homogeneous, stabilized soil mix in a single pass at 0.5–1.5 km/h.
Connected to a water truck via an integrated distribution hose, the THOR ST applies controlled water dosing directly into the mixing chamber during operation — achieving the optimal moisture content required for compaction and binder reaction without a separate watering pass. The result is a strong, durable, dust-free road surface that dramatically reduces vehicle maintenance costs, shortens construction timelines, and lowers the total cost of rural road ownership.
At 5,300 kg operating weight with transport dimensions of 2,960 x 2,745 x 2,615 mm, the THOR ST delivers the mixing energy and depth penetration of much larger self-propelled reclaimers — at a fraction of the cost, using a standard high-horsepower agricultural or construction tractor as the power unit.
Industries Served: Rural Road Construction & Maintenance, Agricultural Haul Road Improvement, Mining Access Road Rehabilitation, Municipal Road Recycling, Civil Engineering & Ground Stabilization, Forestry Road Construction.
Core Advantages at a Glance: 92 tungsten carbide cutting tools | 250 hp at 1,000 RPM — maximum mixing energy | Integrated water dosing via water truck | Single-pass stabilization at 0.5–1.5 km/h | 5,300 kg operating weight | Pairs with DCW 2.2 binder spreader for complete system.
◆ Technical Specifications – THOR ST Series Stabilizer
| Parameter | THOR ST |
|---|---|
| Transport Dimensions | |
| Length | 2,960 mm |
| Width | 2,745 mm |
| Height | 2,615 mm |
| Operating Weight | 5,300 kg |
| Tractor Requirements | |
| Min. Power Rating | 250 hp (184 kW) |
| Operating Speed | 0.5 – 1.5 km/h (CVT) |
| PTO Input | 1 3/8″ – 21 Splines |
| PTO Rotational Speed | 1,000 RPM |
| Rotor Data | |
| Number of Cutting Tools (Bits) | 92 |
| Water Injection | Integrated (via water truck hose) |
◆ How the THOR ST Soil Stabilizer Works
The THOR ST performs complete soil stabilization in a single forward pass. As the tractor advances at 0.5–1.5 km/h, the 1,000 RPM PTO-driven rotor — carrying 92 tungsten carbide cutting bits — penetrates the road surface and subgrade, pulverizing the existing material. Simultaneously, binder (pre-spread on the surface by the DCW 2.2 or similar spreader) and injected water are blended into the pulverized soil by the high-energy rotor action, creating a homogeneous treated mix.
Structural Composition:
| High-Energy Mixing Rotor | A heavy-duty drum carrying 92 individually replaceable tungsten carbide cutting tools arranged in a spiral pattern. At 1,000 RPM, the tools pulverize rock, old pavement, compacted soil, and aggregate while simultaneously mixing them with binder and water into a uniform stabilized material. The spiral arrangement ensures progressive material engagement and even power demand. |
| Mixing Chamber | An enclosed steel chamber surrounds the rotor, containing the pulverized material within the mixing zone and preventing ejection. The chamber geometry forces multiple passes of material through the rotor, ensuring thorough blending of soil, binder, and water before the mix exits beneath the machine as a leveled, homogeneous layer ready for compaction. |
| Water Injection System | An integrated spray bar inside the mixing chamber connects to an external water truck via a distribution hose. Water is injected directly into the active mixing zone at a controlled flow rate, achieving target moisture content for optimal compaction and binder hydration without a separate watering pass. |
| PTO Driveline | 1 3/8 inch, 21-spline PTO input shaft at 1,000 RPM via heavy-duty cardan shaft with slip clutch and shear bolt overload protection. The 250 hp power input drives the rotor with sufficient energy to pulverize compacted subgrade and blend binder throughout the full mixing depth. |
| Depth Control | Adjustable depth skids or runners control the rotor penetration depth, ensuring consistent treatment thickness across the full working width. The operator sets the target depth before the pass; the skid system maintains it automatically as ground conditions vary. |
◆ Core Advantages of the THOR ST Stabilizer
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92 Tungsten Carbide Cutting Tools The rotor carries 92 individually replaceable tungsten carbide bits, providing extreme cutting density and mixing energy. This high tool count ensures thorough pulverization of even the hardest compacted subgrade and complete blending of binder throughout the treated layer. Each tool is bolt-on replaceable in the field without removing the rotor. |
250 HP at 1,000 RPM — Maximum Mixing Energy The 1,000 RPM PTO speed (versus 540 RPM on lighter implements) delivers nearly double the rotor tip speed, translating to dramatically higher cutting and mixing energy per revolution. This enables the THOR ST to process hard, compacted, or rocky subgrade materials that lower-powered stabilizers cannot penetrate effectively. |
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Integrated Water Injection — One-Pass Operation The built-in spray bar connected to a water truck applies controlled moisture directly into the mixing chamber during stabilization. No separate watering pass. The operator adjusts water flow to achieve the target moisture content for optimal compaction density and binder hydration — a critical quality parameter that manual watering cannot consistently achieve. |
Transform Rural Roads at a Fraction of the Cost Soil stabilization with the THOR ST converts soft, dusty, potholed rural roads into firm, durable surfaces capable of carrying heavy agricultural and industrial traffic — at 60 to 80 percent lower cost than conventional gravel or asphalt overlays. The existing soil becomes the road surface, treated in place. No imported aggregate, no asphalt, no trucking. |
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Dust Elimination and Safety Untreated rural roads generate massive dust clouds that reduce visibility, damage vehicles, harm respiratory health, and contaminate adjacent crops. A THOR ST stabilized road surface is dust-free, improving operational safety, reducing fleet maintenance costs (air filter, engine wear), and eliminating dust-related crop contamination in agricultural zones. |
Lower CO2 and Environmental Impact Soil stabilization recycles the existing road material in place — no quarrying, no aggregate trucking, no asphalt production. This dramatically reduces the carbon footprint of road construction compared to conventional methods. Fewer truck movements, less fuel consumed, and no virgin material extraction make the THOR ST the environmentally responsible choice for rural infrastructure. |
◆ Structure and Material Craftsmanship
Rotor Drum: Heavy-duty forged and machined steel drum with precision-welded tool holders in a spiral pattern. The drum is dynamically balanced for smooth operation at 1,000 RPM. Internally reinforced to withstand the extreme torque and impact forces generated during soil stabilization of rocky or compacted subgrade.
Cutting Tools: 92 tungsten carbide-tipped bits with hardened steel tool holders. Each tool is individually bolt-on replaceable in the field using standard tools. The tungsten carbide tips resist abrasion from rock, gravel, and compacted soil, providing extended service life between replacements. We supply replacement tool sets at competitive prices worldwide.
Mixing Chamber: Ultra-thick high-tensile steel housing with internal wear plates protecting the chamber walls from abrasive material impact. The enclosed design contains the mixing process within the chamber, preventing material ejection and ensuring thorough blending before deposition.
Water Injection: Stainless steel spray bar with multiple nozzles positioned inside the mixing chamber. Connected to the water truck via a quick-coupling hose. Flow rate is adjustable to match soil conditions and target moisture content.
Frame: Heavy-gauge welded structural steel rated for the 5,300 kg operating weight. Three-point hitch mounting for 250+ hp tractors. All structural joints fully welded with gusset reinforcement.
Surface Finish: All components shot-blasted and industrial-grade powder-coated for maximum corrosion resistance in outdoor construction environments.
◆ Application Scenarios
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Rural Road Construction and Rehabilitation The primary application: transforming soft, dusty, potholed rural roads into firm, load-bearing surfaces capable of carrying heavy agricultural trucks, tractors, and harvest transport. The THOR ST processes the existing road material in place, blending it with lime or cement to create a stabilized layer that resists rutting, potholing, and weather erosion — at a fraction of the cost of conventional road building. |
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Agricultural Haul Roads — Field to Factory Sugar cane, grain, cotton, and potato operations depend on haul roads between fields and processing facilities. These roads carry heavily loaded trucks daily during harvest season. The THOR ST stabilizes these haul roads to eliminate dust, reduce vehicle damage, prevent bogging in wet conditions, and significantly shorten transport time — directly reducing the cost of getting product from field to market. |
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Mining Access and Haul Roads Mining operations require durable access and haul roads capable of supporting extremely heavy vehicles. The THOR ST stabilizes existing ground into a compactable road base that resists the extreme loading and traffic volume of mining operations — reducing dust, improving safety, and extending road life between maintenance interventions. |
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Municipal Road Recycling Municipalities can recycle deteriorated paved or unpaved roads by pulverizing the existing surface, adding cement or lime, and recompacting — creating a renewed road base without importing new material. This is the most cost-effective and environmentally responsible approach to rural and secondary road rehabilitation. |
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Forestry Road Construction Forestry operations require temporary or semi-permanent access roads through remote terrain. The THOR ST builds these roads from the soil in place, using lime or cement stabilization to create a trafficable surface without importing gravel over long distances. The environmental impact is minimal compared to conventional road building in forest environments. |
◆ Selection Guide — Complete Stabilization System
The THOR ST works as part of a complete soil stabilization system. The recommended workflow for maximum quality and efficiency:
| Step | Operation | Equipment |
|---|---|---|
| 1 | Spread lime or cement binder on road surface | DCW 2.2 Binder Spreader (front-mounted) |
| 2 | Pulverize, mix, and hydrate in one pass | THOR ST Stabilizer (rear-mounted) + water truck |
| 3 | Grade and shape the treated surface | Motor grader |
| 4 | Compact to target density | Vibratory roller (padfoot + smooth) |
With the DCW 2.2 front-mounted and the THOR ST rear-mounted on the same tractor, steps 1 and 2 occur simultaneously in a single forward pass — the most efficient stabilization workflow possible.
◆ THOR ST vs. Self-Propelled Reclaimers
Disclaimer: We reference competing products solely for comparison. All brand names are trademarks of their respective owners.
| Comparison | THOR ST (PTO-driven) | Self-Propelled Reclaimer |
|---|---|---|
| Power Source | Farm/construction tractor | Dedicated engine |
| Capital Investment | Significantly lower | Very high |
| Tractor Utilization | Uses existing fleet tractor | Dedicated, single-purpose |
| Cutting Tools | 92 tungsten carbide | Varies |
| Water Injection | Integrated | Integrated |
| Transport | Behind tractor (simple) | Low-loader required |
| Cost Per km of Road | Significantly lower | Higher (machine + mobilization) |
◆ Frequently Asked Questions
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Q1: What does a soil stabilizer do? A soil stabilizer pulverizes the existing soil or road material, mixes it with a binding agent (lime, cement, or fly ash) and water, and redeposits it as a homogeneous treated layer. After compaction, this layer becomes a strong, durable, load-bearing surface suitable for road traffic — created from the soil already in place. |
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Q2: What binder materials does the THOR ST work with? Lime (quicklime or hydrated), Portland cement, fly ash, slag cement, and blended hydraulic binders. The choice depends on soil type: lime for clay-heavy soils, cement for granular soils, blends for mixed conditions. The binder is typically spread ahead of the THOR ST using a DCW 2.2 binder spreader or similar equipment. |
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Q3: Why is water injection necessary? Water serves two functions: it activates the chemical reaction in hydraulic binders (cement hydration, lime reaction) and brings the soil to optimal moisture content for compaction. Without controlled water addition, the treated material may be too dry to compact properly or too wet to achieve target density — both compromise the final road strength. |
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Q4: What tractors are compatible? Any tractor with 250+ hp, 1,000 RPM PTO (1 3/8″ 21-spline shaft), and CVT or creeper gear for 0.5-1.5 km/h operation. Compatible models include John Deere 8R/9R, Case IH Magnum/Steiger, New Holland T8/T9, Fendt 900/1000 Vario, Massey Ferguson 8700, and Claas Axion 900/Xerion. |
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Q5: How much road can the THOR ST stabilize per day? At 1 km/h average speed across a typical road width, the THOR ST can process approximately 500-1,500 linear meters per 8-hour day depending on treatment depth, soil conditions, and logistical efficiency (binder supply and water truck turnaround). Large projects typically achieve 800-1,200 m/day in sustained operation. |
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Q6: Are the cutting tools replaceable? Yes. All 92 tungsten carbide tools are individually bolt-on replaceable in the field. Tool life depends on soil abrasiveness — typically 200-500+ linear meters of stabilized road per tool set. We supply replacement tool sets at competitive prices worldwide. |
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Q7: How does the cost compare to conventional road building? Soil stabilization with the THOR ST typically costs 60-80 percent less per kilometer than conventional gravel or asphalt road construction. The savings come from eliminating imported aggregate, asphalt, and the truck fleet needed to haul them. The existing soil is the road material — processed in place. |
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Q8: Can the THOR ST process rocky ground? Yes. The 92 tungsten carbide tools at 1,000 RPM can pulverize rock, old asphalt, compacted gravel, and cemented subgrade. For extremely rocky ground, consider first processing with a THOR stone crusher to reduce the largest stones before stabilization. |
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Q9: Do you ship internationally? Yes, worldwide. Production 15-25 days. Given the 5,300 kg weight and dimensions, shipping is typically via flat-rack container. We handle documentation and offer CIF or FOB pricing. Contact us for a quotation. |
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Q10: What maintenance does the THOR ST require? Inspect cutting tools after each shift, replace worn tools immediately. Check mixing chamber wear plates every 50 operating hours. Flush water injection system after each use. Grease bearings and PTO driveline every 8-10 hours. Check all bolts and structural connections regularly. Change gearbox oil per manufacturer schedule. |
◆ Partner With Us
Whether you are a road construction contractor, a municipality upgrading rural infrastructure, an agricultural estate improving haul roads, or a dealer sourcing soil stabilization equipment — we are ready to work with you. As the manufacturer behind agriculturalstonecrusher.com, we supply the complete stabilization system (DCW 2.2 + THOR ST) with factory-direct pricing and worldwide after-sales support.
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Request a Quote Stabilizer + spreader system pricing |
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Technical Consultation Soil analysis and project advice |
