Hammer Selection Guide

DTH Hammers

Choosing the right hammer is essential to your productivity and operating cost. All Halco Rock Tool DTH hammers are built to last and manufactured to an exceptional standard. Our hammers provide the outstanding performance and productivity expected by drillers worldwide.

Versatility and variety are key to our DTH products and you can be assured that all Halco hammers are suitable for a wide range of rock drilling applications. All our high performance hammers are built at our state-of-the-art, lean manufacturing plant using the highest quality heat treated nickel chrome alloy steels and processes that meet the ISO 9001:2008 standards. It is imperative to us at Halco that every hammer we produce surpasses your expectations. We constantly strive to improve our service and product quality.

Halco DTH Hammer Ranges

We offer DTH products for different hammer ranges and drilling applications.

Superior range

Superior range is designed for Oil & Gas industry when both maximum speed and

reliability is expected. Standard features include for example diamond enhanced drill bits, a bit catcher system, variable bypass ports in the top adaptor as well as live air bleed pistons. These features give the driller the ability to inject greater volumes of air and drilling additives to increase the uphole velocity required to drill deeper holes.

RC Range

Reverse circulation (RC) product range has been designed to give maximum performance in Exploration and Grade Control applications. RC hammers return the rock cuttings back to the surface through the internals of the hammer and drill string. Geologists worldwide trust Halco RC products to help them explore prospects and identify mineral lithologies.

Dominator Range

The Dominator range of hammers offer higher performance and are ideally suited for medium to higher air pressures in blast-hole applications. This design is simple with fewer components, which makes servicing and on-site maintenance easy. With a range of heavy duty models on offer this extends the life of the hammer considerably.

Mach Range

Proven DTH hammers which have been around for over 35 years. Designed for all kinds of drilling conditions but excels in overburden drilling due to the high frequency with less blow energy, particularly in unstable ground conditions. This hammer can drill smaller diameters than the standard range and is ideal for civil engineering applications.

GP Range

The GP series offers breakthrough performance across some of the most challenging applications. The robust non-ported piston design dramatically improves drilling performance when operating under a column of water. A built-in choke facility allows the driller to adjust the volume of air through the hammer to optimise cutting evacuation.

DTH Drilling

“Down the hole” refers to where the hammer action occurs when compared to drifter hammers, which hammer on top of the drill string. The DTH hammer piston always makes direct contact with the drill bit and there is generally no loss of transmitted energy as the hammer drills deeper, as is the case with drifter (top hammer) rigs. Penetration rates with DTH hammers are almost directly proportional to air pressure therefore doubling the air pressure, which will result in approximately double the penetration.

DTH hammers are used throughout the drilling industry. They have become the preferred option over other drilling systems due to their significant advantages.

These include:

• they are capable of drilling in almost all rocks, hard, medium to soft
• their penetration rates outstrip other systems
• reduced costs
• straighter and cleaner holes
• wide range of hole sizes available, without high expenditure
• quieter than other percussive systems.

Your DTH Drilling Expert – Halco Rock Tools

Our team of specialists, together with our dedicated distributor network are available to help you select the optimal product for your drilling application and equipment. We operate globally and provide drilling resources and support around the world.

To find your nearest Halco distributor contact our sales teams today or fill in the enquiry form and we get in touch with you.