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DTH hammers and bits 

DTH hammers

 

Futures
Va eless air distribution. More reliable.
Simple design of the piston. Long life.
More efficient energy transfer, fact drilling speed, lower air consumption and lower oil consumption.
Fewer internal parts, simple structure, long life, less failure and easier to maintain because all the parts are heat treated.
Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.
  

 

Hammers

Bit Shank

Connection Thread

Suitable bit

Working pressure

 

2"

BR2

RD50 box

70-90mm

0.7-1.75Mpa

 
 
 

3"

DHD3.5
COP32/COP34
M30

API 2 3/8"Reg

90-110mm

1.0-1.5Mpa

 
 

4"

DHD340
COP44
QL40
SD4
M40

API 2 3/8"Reg

110-135mm

1.0-2.5Mpa

 
 
 

5"

DHD350
COP54
QL50
SD5
M50

API 2 3/8"Reg/API 3 1/2"Reg

135-155mm

1.0-2.5Mpa

 
 
 

6"

DHD360
COP64
QL60
SD6
M60

API 3 1/2"Reg

155-190mm

1.0-2.5Mpa

 
 
 

8"

DHD380
COP84
QL80
SD8

API 4 1/2"Reg

195-254mm

1.0-2.5Mpa

 
 
 

10"

SD10
Numa100

API 6 5/8"Reg

254-311mm

1.0-2.5Mpa

 
 
 

12"

DHD1120
SD12
Numa120

API 6 5/8"Reg

305-445mm

1.0-2.5Mpa

 
 
 

 


DTH bits

 

Futures
Strict quality controlling 
Selected high quality special steels and carbide
Produced by CNC machines
Simple and reasonable design, Low problem rate
Low air consumption, smooth drilling, Maximum impact power, High penetration rate

 

 

 

  

 

Hammer inch

Bits diameter

Shank

Metric

Inch

1"

64mm-70mm

2 1/2"-2 3/4"

BR1

2"

70mm-95mm

2 3/4"-3 3/4"

MACH20/BR2

3"

90mm-102mm

3 1/2"-4"

COP32/COP34/MACH303
M30/DHD3.5/BR3

4"

105mm-152mm

4 1/8"-6"

COP44/DHD340/MACH44
SD4/M40/QL40

5"

133mm-165mm

5 1/4"-6 1/2"

COP54/DHD350R/MACH50
SD5/M50/QL50/BR5

6"

152mm-254mm

4 1/8"-10"

COP64/DHD360/SD6
M60/QL60/Bulroc BR6

8"

203mm-330mm

8"-13"

COP84/DHD380/SD8
QL80/M80

10"

254mm-380mm

10"-15"

SD10
NUMA100

12"

305mm-508mm

12"-20"

DHD1120/SD12
NUMA120/NUMA125





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