QL50, QL55 Quantum Leap Hammer Atlas Copco Rock Drilling Tools For
Secoroc Down the Hole Equipment Drilling
QL50, QL55 Quantum Leap Hammer Atlas Copco Rock Drilling Tools For
Secoroc Down the Hole Equipment Drilling
Atlas Copco Rock Drilling Tools -Secoroc Down the Hole Equipment
Strong Performance and Affordability
Our Quantum Leap product line is available for those seeking a good
balance between strong performance and cost. This product line was
the drilling industry's first hybrid-combination of valve and
valveless-air cycle down-hole drills. Setting many industry
benchmarks, the Quantum Leap line continues to offer good value.
| Description | Standard | Quarry |
| English | Metric | English | Metric |
| Standard drill pipe connection (see options) | 3-1/2 API reg pin | 3-1/2 API reg pin |
| Outside diameter (inch & mm) | 4.6 | 117 | 4.9 | 124 |
| Length w/o bit shoulder to shoulder (inch & mm) | 42 | 1,067 | 42 | 1,067 |
| Length with bit extended (inch & mm) | 46.3 | 1,176 | 46.3 | 1,176 |
| Length with bit retracted (inch & mm) | 45.3 | 1,149 | 45.3 | 1,149 |
| Weight w/o bit (lb & kg) | 132 | 60 | 162 | 74 |
| Backhead across flats (inch) | 2 x 3-1/2 AF | 2 x 3-1/2 AF |
| Minimum bit size (inch & mm) | 5.1 | 130 | 5.5 | 140 |
| Maximum bit size (inch & mm) | 6 | 152 | 6 | 152 |
| Bore (inch & mm) | 3.7 | 95 | 3.7 | 95 |
| Piston weight (lb & kg) | 31 | 14 | 31 | 14 |
| Stroke (inch & mm) | 3.75 | 95 | 3.75 | 95 |
| Maximum pressure differential (psig & bar) | 350 | 25 | 350 | 25 |
| Maximum choke diameter (inch & mm) | 0.38 | 9.6 | 0.38 | 9.6 |
| Make-up torque (ft-lb. & N-m) | 5,000 | 6,770 | 5,000 | 6,770 |
| Shank style | QL50 | QL50 |
Air Consumption:
| Description | QL50/55 |
| 100 psi/6,9 bar (scfm & l/s) | 202 | 95 |
| blows per minute | 1,116 |
| 150 psi/10,3 bar (scfm & l/s) | 310 | 146 |
| blows per minute | 1,266 |
| 200 psi/13,8 bar (scfm & l/s) | 422 | 199 |
| blows per minute | 1,401 |
| 250 psi/17,2 bar (scfm & l/s) | 538 | 254 |
| blows per minute | 1,521 |
| 300 psi/20,7 bar (scfm & l/s) | 658 | 310 |
| blows per minute | 1,626 |
| 350 psi/24,1 bar (scfm & l/s) | 783 | 369 |
| blows per minute | 1,716 |
| 400 psi/27,6 bar (scfm & l/s) | 911 | 430 |
| blows per minute | 1,791 |
| 435 psi/30,0 bar (scfm & l/s) | 1,004 | 474 |
| blows per minute | 1,835 |
| Above specifications/ratings are based on initial factory setting. |
| ROSCHEN DTH Bits Specifications |
| Hammer Size | Bits diameter | Shank | ROSCHEN CODE |
| Metric | Inch |
| 1" | 64mm-70mm | 2 1/2"-2 3/4" | BR1 | ROS 11 |
| 2" | 70mm-95mm | 2 3/4"-3 3/4" | MACH20/BR2 | ROS 22 |
| 3" | 90mm-102mm | 3 1/2"-4" | COP32/COP34/MACH303 | ROS 32 |
| M30/DHD3.5/BR3 | ROS 34 |
| 4" | 105mm-152mm | 4 1/8"-6" | COP44/DHD340/MACH44 | ROS 42 |
| SD4/M40/QL40 | ROS 44 |
| 5" | 133mm-165mm | 5 1/4"-6 1/2" | COP54/DHD350R/MACH50 | ROS 52 |
| SD5/M50/QL50/BR5 | ROS 54 |
| 6" | 152mm-254mm | 4 1/8"-10" | COP64/DHD360/SD6 | ROS 62 |
| M60/QL60/Bulroc BR6 | ROS 64 |
| 8" | 203mm-330mm | 8"-13" | COP84/DHD380/SD8 | ROS 82 |
| QL80/M80/M85 | ROS 84 |
| 10" | 254mm-380mm | 10"-15" | SD10 | ROS 100 |
| NUMA100 |
| 12" | 305mm-508mm | 12"-20" | DHD1120/SD12 | ROS 120 |
| NUMA120/NUMA125 |
| Notes: |
| Metzke, Remet thread is available! |
| Any special size of DTH bits will be available by requests. |
For more information, please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ; http://www.roschendrill.com
http://www.roschenmining.com ; http://www.roschendrilling.com
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