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DHD8 Classic Hammer

 

DHD8

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.

 


DHD8 General Specifications:

 

AWDS logo
Standard
Mizer
English
Metric
English
Metric
Standard drill pipe connection (see options)
4-1/2 API reg pin
4-1/2 API reg pin
Outside diameter (inch & mm)
7.1
181
7.1
181
Length w/o bit shoulder to shoulder (inch & mm)
56.8
1,443
56.8
1,443
Length with bit extended (inch & mm)
63.5
1,613
63.5
1,613
Length with bit retracted (inch & mm)
61.4
1,560
61.4
1,560
Weight w/o bit (lb & kg)
390
177
446
203
Backhead across flats (inch)
2-1/2 x 5-7/8 AF
2-1/2 x 5-7/8 AF
Minimum bit size (inch & mm)
7.9
200
7.9
200
Maximum bit size (inch & mm)
10.6
270
10.6
270
Bore (inch & mm)
5.8
148
5.8
148
Piston weight (lb & kg)
82
37
82
37
Stroke (inch & mm)
4.0
102
4.0
102
Maximum pressure differential (psig & bar)
350
25
350
25
Maximum choke diameter (inch & mm)
0.53
13.5
0.53
13.5
Make-up torque (ft-lb. & N-m)
8,000
10,932
8,000
10,932
Shank style
DHD380
DHD380

 

Request info

 

Air Consumption:

 

 
Standard
Mizer
100 psi/6,9 bar (scfm & l/s)
345
163
304
143
blows per minute
1,000
1,000
150 psi/10,3 bar (scfm & l/s)
583
275
493
233
blows per minute
1,100
1,100
200 psi/13,8 bar (scfm & l/s)
821
387
672
317
blows per minute
1,200
1,200
250 psi/17,2 bar (scfm & l/s)
1,060
500
842
397
blows per minute
1,300
1,300
300 psi/20,7 bar (scfm & l/s)
1,299
613
1,003
473
blows per minute
1,400
1,400
350 psi/24,1 bar (scfm & l/s)
1,538
725
1,155
545
blows per minute
1,500
1,500
Above specifications/ratings are based on initial factory setting.

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