Top Hammer Drilling

In Top Hammer Drilling the hammer produces a percussive force on the drill rods or tubes, which is transmitted to the drill bit. The feed device is usually attached with a hinged boom to a mobile unit. The percussive system strikes the drill rod, for example 2,000-5,000 strikes per minute, and the rotation speed can be, for example, 60-200 rounds per minute. Together these elements make it possible to drill holes in the hard rock. The excess material (cuttings) is flushed up from the bottom of the hole by means of pressurized air or water. Top hammer drills are primarily used in mining, construction and quarrying of rock material. Top hammer drilling, combined with the “drill and blast” method, makes the whole excavation process extremely efficient.

Robit Top Hammer business line covers all applications in construction, quarrying and mining, as well as blasting and forepoling (Tube Umbrella, NATM), from the softest to the hardest of rock conditions. Underground construction is one of the most important customer segments for Robit bits, and applications such as drifting and bolt hole drilling are well catered for, as well as RoX top hammer casing systems for tunneling support. Robit’s quality has been approved worldwide by major mining and quarrying customers. The selection is wide and encompasses products, such as: drifting and tunneling bits, reaming equipment, bench and production drilling bits, rods, shanks, couplings, and auxiliary tools, such as button bit adapters.

Robit competitive offering in Top Hammer drilling consumables:

• Efficient Button Bits – top of the class rate of penetration providing lowest cost per meter.
• Developed in co-operation with customer’s field tests.
• Reliable Reaming Equipment – wide range of modern Rbit™ Dome Reamers.
• Strong Drill Steel – Rods, Top Hammer Drill Tubes, Shanks and Couplings. Manufactured in one of the world’s most modern factories in South Korea with the latest technology. Shanks for all common drifter brands. Wide range of rod types and lengths.

Proven quality – manufactured with automated production lines 

• Sustainable, 100% recyclable steel and over half of it is carbon neutral
• Excellent and optimized bits for abrasive and soft rock formations
• High penetration rate in all rock formations

Robit guarantees You:

• The highest quality in drilling tools – our focus is 110% in drilling tools
• Proven excellence in drilling performance – backed by numerous references
• We emphasize short lead time and precise deliveries from our 3 factories, supported by comprehensive local availability on every continent.

Robit is following together with its key customers the development steps of more powerful hydraulic drifters. Robit is modelling and simulating the dynamic forces and stresses, and innovates new solutions to meet the drillers’ needs for the best performance, efficiency and lifetime.

Drill FURTHER and FASTER with these high penetration rate drilling tools