Borehole DTH Drilling Rig

It's a portable Down-The-Hole (DTH) drilling rig designed for borehole drilling in construction, water well drilling, foundation and anchoring, geothermal exploration, and other civil engineering applications requiring deep, efficient drilling.

Motor power: 3 kW; Voltage: 220 V; Water pump power: 2.2 kW; Product size: 2.45 × 0.83 × 0.9 m; Weight: 27 kg.

Drilling diameter range: approximately 80–200 mm. Typical rated depth is 100 m (product info); in optimal conditions and with appropriate tooling it can reach up to around 150 m depending on ground conditions and setup.

Operating pressure range: 1.45–2.5 MPa (14.5–25 bar). Air consumption: 16–30 m³/min. Use a compressor that can reliably deliver this pressure and flow.

Compatible with drill rod diameters of 89 mm and 102 mm; other rod/bit configurations within the machine's spindle and chuck capacity may be usable with proper adapters.

Spindle speed ranges from 32 to 1,057 r/min, allowing adaptation to different rock types and drilling regimes (impact rotary/DTH operation).

Yes — the rig is lightweight at 27 kg for portability. However, its length and installed tooling mean transport in a small vehicle or pickup is recommended; setup should be performed by trained personnel and typically takes a short time.

The rig uses a 220 V electric motor (3 kW). Ensure stable AC power or a suitable generator sized to supply the motor plus any auxiliary equipment.

Routine maintenance includes daily inspection of hoses and fittings, lubrication of moving parts, checking and replacing worn bits and valves, monitoring air filters and seals, and scheduled inspection of the motor, pressure vessel, gears and bearings per supplier recommendations.

Operators should wear PPE (hearing protection, eye protection, gloves, safety boots), secure the rig and work area, depressurize air systems before servicing, follow lockout/tagout for electrical work, and ensure only trained personnel operate the rig.

A compressor capable of delivering 1.45–2.5 MPa (14.5–25 bar) and 16–30 m³/min flow is required. For portable applications, a high-pressure, high-capacity compressor (often diesel-powered on site) is typically used.

Yes — DTH rigs are well-suited for hard rock due to the percussive impact mechanism. Actual performance depends on bit selection, air pressure, compressor capacity, and rod/bit condition.

The product lists a 2.2 kW water pump in the product info, indicating support for water circulation/flushing where required. Use of water should follow site requirements and drilling method selected.

Spare parts and technical support availability vary by supplier. Contact the vendor or manufacturer for information on warranty, spare parts kits (bits, valves, seals), and after-sales service.

Key factors include rock/soil type, compressor pressure and flow, bit type and condition, rod string configuration, operator skill, and site logistics. Optimizing these factors yields higher penetration rates and greater depth capability.