Big Size DTH Hammer

Superdrill DTH hammers are all simple structure, easy to assemble and disassemble, as well as reliable quality and long service life. Superdrill has various hammer models suitable to drill holes from 64mm to 1000 mm (2-1/2” ~ 39-3/8”) in diameter; and come with three kind: low pressure (5 ~ 7 bars), middle pressure (7 ~ 15 bar) and high pressure ­­(7~ 30 bars).

Superdrill  DTH hammers mainly be produced with shank type of DHD, QL, SF, COP, Mission, SD, BR, CIR and ACD series, Diameter ranging from 2” to 8” for mining and quarrying, and 6” to 32” for      water-well drilling, oil-well drilling and foundation and so on.

Big Size DTH Hammer :

Hammer Size	Shank  Design	Working Pressure		Drilling Range
		Bar (0.1 MPa)	PSI (lb/in2)	mm	inch
6”	DHD360	10~25	150~360	155~195	6 1/8 ~ 7 3/4
8”	QL80	18~30	260~440	195~254	7 3/4 ~ 10
10”	NUMA100	18~30	260~440	254~311	10 ~ 12 1/4
12”	NUMA125	18~30	260~440	305~445	12 ~ 17 1/2
14”	SPD145	18~30	260~440	350~610	13 3/4 ~ 24
18”	SPD185	17~24	250~350	445~660	17 1/2 ~ 26
20”	SPD205	20~30	290~440	508~760	20 ~ 30
24”	SPD245	20~30	290~440	610~800	24 ~ 31 1/2
32”	SPD325	17~24	250~350	720~1000	28 3/8 ~ 39 3/8