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DTH hammers

Item No.: 00508
Hammer Size:from 3
Shank types:COP, QL,DHD, MISSION,HD,IR, SD,TD,CIR,BR
Hammer Size: low/middle/high air pressure
Connect Thread :API 2 3/8
Sale: 0
Description Review
Description

General Introduction:

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  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.

DTH Hammer Selection:

Choosing the right hammer is largely determined by drill machines (mainly compressor output), drilling hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for compressed air to flush cuttings and clean the hole.

The optimum range of hole size for blast-hole drilling with DTH method is 90~254 mm (3-1/2” ~ 10”) with 3.5 ~ 8” hammers. Smaller blast holes are generally drilled with top-hammer tools, while larger holes typically with Rotary Drilling Tools. In other applications, like foundation drilling, DTH hammers can be used in hole size up to 1,000 mm (39-3/8”).

Usually, the smallest hole diameter a DTH hammer can drill is its nominal size, for example, a 4” hammer would drill a 4” (100/102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1”for 5” and smaller hammers and plus 2 for 6” and bigger hammers, for example, for a 4” hammer the maximum hole size is 5” (127/130mm) while for a 8” hammer the maximum hole size is 10” (254mm).

Whatsapp/Phone:+86 18186993613

E-mail: [email protected]



DTH hammer

Weight (kg)

External Diameter (mm)

Connection thread

Hole rang (mm)

Impact rate

Recommended rotation speed

Quality level:98% similarity to COP/SD/MISSION/QL/BR/DHD etc famous brand

Series:COP/ SD/ DHD/ IR/ Mission/ QL/ BR/ CIR etc

Low air pressure DTH hammer CIR type

5 ~22

50~180

CIR**

55~200

820 rpm

Middle air pressure BR & COP type

10~30

70~110

85~115

3 inch DTH hammer
COP34/QL30 etc

24.5

81

API 2 3/8” Reg

90~110

28Hz (at 17 bar)

28 r/min

4 inch DTH hammer
COP44/DHD340 etc

39.2

99

API 2 3/8” Reg

110~150

27Hz (at 17 bar)

25~40 r/min

5 inch DTH hammer
COP54/Mission50 etc

71.5

125

API 2 3/8” or API 3 1/2” Reg

135~165

25Hz (at 17 bar)

20~30 r/min

6 inch DTH hammer
COP64/QL60 etc

98

142

API 3 1/2” Reg

152~216

23Hz (at 17 bar)

15~25 r/min

8 inch DTH hammer
COP84/SD8 etc

188

180

API 4 1/2” Reg

203~305

20Hz (at 17 bar)

15~20 r/min

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