RE004 Hammer DTH

Designed with dual wall system, the RE004 hammer is one model of DTH reverse circulation hammer. Its primary function is to break rock using impact energy while simultaneously clearing cuttings through a reverse circulation system within the drill pipe, allowing for efficient drilling and continuous debris removal.

In reverse circulation (RC) and exploration drilling, sample recovery and penetration speed are critical. Any downtime caused by low-efficiency hammers or slow spare parts logistics directly impacts drilling margins.

Gdrills RE004 High-Pressure RC/DTH Hammer is engineered to deliver maximum impact energy, continuous sample return, and outstanding durability in abrasive, fractured formations. Built to operate under demanding high-pressure air conditions, the RE004 ensures zero sample contamination and maximum reliability.

Note: All internal components (Piston, Inner Tube, Distributor, Seal Rings) are 100% physically interchangeable with major global 4-inch RC hammer brands.

The Gdrills RE004 is highly versatile and matches perfectly with modern heavy-duty exploration drilling rigs.

Directly Mountable Rig Brands: Fully compatible with leading hydraulic RC rig platforms, including Schramm (T450/T685), Atlas Copco (Explorac 100/220), Sandvik (DE800 series), and UDR multi-purpose rigs.

Standard Thread Connections: Equipped with industry-standard Metzke 4" / REMET 4" pin/box thread connections on the top sub, ensuring a tight, high-torque seal with dual-wall RC drill pipes.

B2B drilling engineers must perfectly match their compressor capacity with the hammer. Running a hammer under-powered or over-pressured leads to failure. Below is the official performance guide for the Gdrills RE004:

Performance & Air Consumption Chart

RC hammers operate in highly abrasive environments, meaning components like the piston, inner tube, and shroud will eventually require replacement. To simplify your maintenance and spare parts purchasing, refer to our exploded layout below:

For all sizes of DTH hammers, the outer tube, piston, air distributor, and back-end sub are generally not considered consumable parts. If any of these components fail within two-thirds of the hammer's expected service life, Gdrills will provide replacement parts free of charge. For consumable components such as chucks, O-rings, and seals, customers are advised to stock essential quantities for routine maintenance and replacement during regular use.

Gdrills provides a warranty period of up to 280 days from the date of shipment for each DTH hammer. This is because certain internal parts may be prone to rust or degradation if the hammers are not properly maintained or stored in suitable conditions.

If a new DTH hammer fails to operate upon first use, Gdrills will provide repair support or technical assistance to resolve the issue. If the customer can provide sufficient evidence that the product has a critical manufacturing defect, Gdrills will replace the hammer at no additional cost.

Gdrills does not offer warranty coverage for failures resulting from incorrect operation, including but not limited to inadequate lubrication, operation above the recommended pressure range, or misuse of the product.

In the event that a Gdrills DTH hammer is found to be incompatible with the standard and correct shank design of DTH button bits, Gdrills will take responsibility for replacing the incorrect chuck or the complete hammer to ensure proper fit and function.

Zero Contamination Samples: Our inner tubes are designed with dual-wall sealing, preventing bypass air from blowing into the cutting face and ensuring 100% pristine geological samples.

Extreme Cost Efficiency: By offering 100% interchangeable components at factory-direct pricing, G-Drills helps drilling contractors reduce their cost-per-meter by up to 30% compared to original OEM hammers.

Rapid International Dispatch: We maintain extensive stock of complete RE004 hammers and individual wear parts in our regional distribution centers, ensuring minimal downtime for your exploration drilling campaign.

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