QL120 Quantum Leap Hammer

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.

QL120 Specifications

General Specifications:

	Standard		Slim
	English	Metric	English	Metric
Standard drill pipe connection (see options)	6-5/8 API reg pin		6-5/8 API reg pin
Outside diameter (inch & mm)	11.2	285	10.75	273
Length w/o bit shoulder to shoulder (inch & mm)	72.3	1,837	72.3	1,837
Length with bit extended (inch & mm)	82.0	2,083	82.0	2,083
Length with bit retracted (inch & mm)	80.0	2,032	80.0	2,032
Weight w/o bit (lb & kg)	1,430	650	1,257	571
Backhead across flats (inch)	4 x 1 AF		4 x 1 AF
Minimum bit size (inch & mm)	12.25	311	12.25	311
Maximum bit size (inch & mm)	22.0	559	22.0	559
Bore (inch & mm)	9.25	235	9.25	235
Piston weight (lb & kg)	350	159	350	159
Stroke (inch & mm)	5.0	127	5.0	127
Maximum pressure differential (psig & bar)	250	17	250	17
Maximum choke diameter (inch & mm)	0.75	19.0	0.75	19.0
Make-up torque (ft-lb. & N-m)	12,000	16,248	12,000	16,248
Shank style	QL120		QL120

Air Consumption: