DHD60/65 Classic Hammer

Atlas Copco Rock Drilling Tools - Secoroc Down the Hole Equipment

Time-Tested Design

Our DHD Classic product line is available for drilling contractors, owner-operators, and large corporations who are specifically looking for the lowest priced drill. This time-tested design is practically bullet proof -- it has been in continuous, successful use in the industry for over 30 years.

DHD60/65 Specifications

General Specifications:

	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)	5.44	138.2	5.75	146.1
Length w/o bit shoulder to shoulder (inch & mm)	44.6	1,132	44.6	1,132
Length with bit extended (inch & mm)	49.5	1,256	49.5	1,256
Length with bit retracted (inch & mm)	48.1	1,221	48.1	1,221
Weight w/o bit (lb & kg)	200	91	244	111
Backhead across flats (inch)	2 x 4 AF		2 x 4 AF
Minimum bit size (inch & mm)	6.0	152	6.5	165
Maximum bit size (inch & mm)	8.5	216	8.5	216
Bore (inch & mm)	4.5	114	4.5	114
Piston weight (lb & kg)	43	19	43	19
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)	6,000	8,124	6,000	8,124
Shank style	QL60		QL60

Air Consumption: