Down-the-hole hammers |
 |
Down-the-hole
hammers |
|
 Down-the-hole
hammers are the ideal tools for rock drilling in water wells, mining
and quarry, consolidation and injection.
The last generation series of hammers is formed by valveless pneumatic
tools with a unique design that makes it one of the most powerful
and universal hammers on today's market, that can work with pressure
up to 25 BAR.
On the table, you will find the various models available with the
main technical features.
Hole sizes from 60 to 609 mm.
Model |
Tool O.D. |
Max working pressure |
Top sub connection |
Length w/out bit |
Weight (KG) |
Bit size range (mm.) |
1" |
53 mm. |
17 Bar |
R.D. 40 |
768 mm. |
8 |
60 - 64 |
2" |
63 mm. |
17 Bar |
R.D. 50 |
866 mm. |
13 |
70 - 76 - 80 |
3" |
78 mm. |
25 Bar |
2 
A.R. Pin |
908 mm. |
22 |
85 - 90 - 95 |
4" |
96 mm. |
25 Bar |
2
A.R. Pin |
950 mm. |
35 |
101 - 105 - 110 - 115 - 120 - 127 |
5" |
116 mm. |
25 Bar |
3 
A.R. Pin |
1100 mm. |
68 |
127 - 130 - 133 - 140 - 146 - 150 |
6" |
138 mm. |
25 Bar |
3
A.R. Pin |
1180 mm. |
120 |
152 - 158 - 165 - 178 - 190 - 200 - 216* |
8" |
172 mm. |
25 Bar |
4
A.R. Pin |
1270 mm. |
175 |
191 - 200 - 216 - 219 - 250 - 270 - 305* |
10" |
226 mm. |
25 Bar |
6 
A.R. Pin |
1623 mm. |
345 |
250 - 270 - 280 - 305 - 311 - 330 |
12" |
273 mm. |
17 Bar |
6
A.R. Pin |
1700 mm. |
500 |
305 - 311 - 350 - 375 - 406 - 445 |
15" |
320 mm. |
17 Bar |
8
A.R. Pin |
1925 mm. |
860 |
445 - 533 - 560 - 584 - 609 |
* Non-standard diameters
Top 
"Mincon
Rockdrills" down-the-hole hammers |
|
"Mincon Rockdrills" hammer specifications
Hammer model |
Bit shank type |
Minimum bit size |
Outside diameter |
Length without bit |
Mincon 3.5 |
DHD3.5 |
95mm |
85mm |
880mm |
Mincon 4HR |
DHD340A |
110mm |
97mm |
1031mm |
Mincon 5DH |
DHD350R |
136mm |
124mm |
1149mm |
Mincon 6DH |
DHD360 |
152mm |
140mm |
1128mm |
Mincon 8DH |
DHD380 |
200mm |
181mm |
1314mm |
 A
"Down-the-Hole" Hammer is probably the most important
component on the drill rig and the DTH system holds many advantages
over the alternatives, for instance:
Rotary Drilling is fine for large diameter holes in softer more
friable rocks but less effective in hard rock or where small diameter
holes are needed.
Top Hammer (Drifter)drilling system can produce satisfactory results
for short hole drilling in hard homogenous rock conditions but would
likely experience difficulty in deep holes and in soft ground or
with large diameters.
The DTH system is by far the most versatile and can be used very
successfully in a wide range of ground conditions from soft,through
medium to very hard.
Small or large diameter holes with depth capability are all within
the scope of the DTH system, which is recognised for providing clean,
truly aligned bore holes at high drilling rates with minimal operating
cost.
Some unique features of DTH system:
- Capable of drilling in almost all ground conditions
- Constant energy directly behind the bit provides: speed with
less power loss & greater hole accuracy.
- Rigid drill string improves hole alignment
- Air flow volume provides efficient flushing and cleaner holes
- Choice of hole diameters are available with the same Hammer
- Easy to service and mantain
- Large chip drilling provides speed with minimal dust emission
These factors are very important to users operating in the many
applications within the drilling industry, which can include:
Blast Hole - Water Well - Oil & Gas - Rock Anchor - Ground
Consolidation - Pile - Seismic - Directional and Mineral Exploration
Drilling.
Mincon DTH Hammers provide customers with these distinct benefits,
as well as being able to operate across a wide air pressure range
and still continue to provide maximum output with comforting reliability.
Mincon Hammers incorporate unique designs, use special steel and
undergo closely guarded processes to make them stand out from other
makes.
Mincon offer:
- Additional Flushing capability for cleaner holes, particularty
at depth
- Case hardened outer components for reduced wear in abrasive
rocks
- Heavy Duty options for tougher conditions
- Reversible Wear Sleeves on the larger models for extra life
- Effective Check Valve for drilling in wet holes
- Unique internal mounting concept removes need for shims or special
tools
Specification sheets of each hammer model
available.
Contact our offices: tech@adriatech.com
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