The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 1/2'-10'). Smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines. 

Click here for the quantum leap & total depth diagram

Click here for the QLX 50-55 diagram

Click here for the QLX 60-65 diagram

Quantum Leap Hammers

Our Quantum Leap product line is available for those seeking a good balance between strong performance and cost. This product line was the industry's first hybrid-combination of valve and valve less air cycled down-hole drills. Setting many industry benchmarks, the Quantum Leap line continues to offer good value.

     QL 340 Hammer       QL 40-45 Hammer     QL 50-55 Hammer  

    QL 60-65 Hammer       QL 80 Hammer         QL 120 Hammer     

                        QL 200 Hammer     Aqua 60 Hammer    

Where high performance is the main criterion Secoroc TD hammers in deep hole drilling applications. The TD hammer has proven superior performance and adaptability to different air requirements thanks to the Air Select System.

Cop Hammers

Atlas Copco Secoroc’s COP hammers have long enjoyed an unparalleled reputation for productivity and the lowest cost per meter drilled. Our brand new 5” hammer, COP 54 Gold Express, has pushed the Gold concept a step further. Like COP 54 Gold, regarded as the toughest 6” hammer ever built, this unique solution is not only a rugged addition to the world’s premier range of DTH equipment. It can also handle pressures all the way up the 30 bar, while delivering a host of other improvements where it really counts – in the productivity department.

Atlas Copco 64 gold hammer    Atlas Copco 54 gold express hammer    Atlas Copco 44 gold hammer

Atlas Copco Reverse Circulation Hammers

Accurate sampling Reverse Circulation (RC) drilling is gaining recognition and is already the most common mineral exploration drilling method used in many regions of the world. Combined with the Secoroc RC 50 hammer it is unbeatable for obtaining accurate and uncontaminated rock samples at high speed and low cost. Atlas Copco produces the complete RC drill string including hammer, bit and pipes, for both in-pit grade control and exploration drillers. Mounted on a choice of Explorac 220RC, Explorac R50, ROC L8RC and RD10 rigs, the system is the most productive available.  

See the reverse circulation products

1705 Old Covington Road, NE     Suite 101     Conyers, Georgia 30013        (770)  483-0788 phone  (770) 483-3331 fax