Heavy-Duty Hydraulic Tree Planting & Earth Auger Drills (Excavator / Loader Attachments)
Product Name: Hydraulic Earth & Tree Hole Auger Drill Rig
Carrier Machine Compatibility: Excavators (1.5–30 Ton), Wheel Loaders, Backhoe Loaders, Truck-Mounted Cranes
Drilling Depth Range: 0.5m – 3.0m (Extendable up to 30m with modular sectional stems)
Drilling Diameter Range: 200 mm – 2,200 mm
Primary Applications: Tree Hole Digging, Solar PV Foundation Piling, Utility Pole Drilling, Highway Guardrail / Slope Protection Piling



Engineered as a versatile attachment for civil construction, agricultural forestry, and utility engineering, this hydraulic earth auger transforms excavators, backhoes, and loaders into mobile vertical drilling rigs.
By directly tapping into the carrier machine's hydraulic circuit, the system delivers high rotational torque through a planetary gearbox, allowing rapid single-pass vertical hole drilling across clay, loam, gravel, and cobble-bearing ground layers.
Reinforced Pin-On Mounting Hitch: Heavy-duty steel adapter plate fitted with high-tensile locking pins. Custom-fabricated to match quick-coupler or direct dipper-arm dimensions for Hitachi, CAT, Komatsu, Kubota, and major loader brands.
Heavy-Gauge Flighting Plate (Up to 16mm Thick): Cold-rolled continuous steel flightings with reinforced weld joints along the central shaft, preventing flight tearing or bending when striking buried roots, stones, or hardpan clay.
Optimized Pitch Geometry: Spiral pitch is calculated to rapidly transport loosened spoil upward out of the borehole, preventing tool clogging and reducing hydraulic engine drag.
Self-Centering Pilot Head: Tapered lead point ensures accurate hole alignment at the drill mark, eliminating bit displacement during high-RPM startup.
| Technical Parameter | Compact Series (Mini Excavators) | Utility Series (Medium Machines) | Heavy-Duty Series (Large Fleets) |
| Carrier Machine Weight | 1.5 – 6.0 Ton | 7.0 – 15.0 Ton | 16.0 – 30.0 Ton |
| Hydraulic Flow Input | 30 – 65 L/min | 60 – 120 L/min | 120 – 220 L/min |
| Working System Pressure | 16 – 20 MPa | 20 – 25 MPa | 25 – 31.5 MPa |
| Drilling Diameter Options | 200 mm – 600 mm | 400 mm – 1,200 mm | 800 mm – 2,200 mm |
| Standard Hole Depth | 0.5 m – 1.5 m | 1.0 m – 3.0 m | Up to 6.0 m+ (With Extension Bars) |
| Flight Plate Thickness | 10 mm – 12 mm | 14 mm – 16 mm | 16 mm – 20 mm |
Digs clean, uniform, flat-bottom tree pits rapidly without tearing surrounding soil structure. Drastically increases planting efficiency compared to manual digging, capable of drilling dozens of holes per hour.
Pre-drills mounting post holes across remote mountainous terrains, desert solar farms, and uneven slopes where specialized rotary piling rigs cannot easily maneuver.
Enables city municipal crews and rural power grid contractors to bore clean vertical holes along road shoulders for utility poles, fiber-optic line posts, and streetlights.
Executes small-to-medium diameter piling for retaining walls, highway guardrail posts, railway catenary wire supports, and residential foundation reinforcement.
Xi'an Xinjinzuan Construction Machinery Co., Ltd. is a direct manufacturer specializing in foundation attachments, earth augers, and modified drill rigs.
Custom Hub Adaptations: Square drive hubs, Hex drive connections, or flange couplings.
Custom Tooth Options: Flat clay teeth, tungsten carbide bullet teeth for rocky layers, or hard-faced alloy blades.
Direct Export Service: CAD dimensional approval prior to production, container packing, and global shipping (FOB/CIF/DDP).
A: Yes. Auger heads are quick-coupled to the lower drive shaft via locking pin joints, allowing operators to swap from a 300mm tree hole auger to a 800mm foundation auger using the same hydraulic drive head.
A: For topsoil and clean clay, standard forged dirt teeth are recommended. For ground with tree roots, gravel, or cobbles, we install tungsten carbide bullet teeth and a hard-faced center pilot bit to break obstruction through impact.
Factory Website: www.excavatordrillrig.com
Technical Inquiry: Contact our engineering team for matching hydraulic flow charts, custom hitch dimensions, and direct factory pricing.