BR1, BR2, BR3 is low pressure and mdedium pressure hammer using BR series bits.
It is valveless hammer, especially suitable for quarrying.
BR1 hammer technical data:
Length(without bits): 880mm
Weight(without bits): 14.5kg
External diameter: 62mm
Shank: Bulroc BR2
Hole range: 70mm-90mm
Connection thread: RD50 BOX
Working pressure: 7-17.5 bar
Impact rate ar 14 bar: 25Hz
Recmmended rotation speed: 25-40r/min
Air consumption:
At 7 bar: 2.5m3/min
At 10 bar: 4m3/min
At 14 bar: 5m3/min
We can prodive DTH bits for BR2 hammer diameter: 70mm, 76mm, 80mm, 85mm, 90mm customers' design is avaible.
We export DTH hammer and bits for almost thirty years.
DTH Hammer
Designed to suit high pressure drilling rigs.
» Water well drilling
» Record breaking penetration.
» Bench drilling
» Exploring Civil Engineering Applications
» Lowest cost per foot drilled.
» Mining /Mineral Exploration
» Simple & robust design. Exploring Civil Engineering Applications
» Oil well drilling
» Foot Valve not required in the bit.
» Longer parts life.
Specification:
| Hammer size |
1" bit |
2" bit |
3" bit |
4" bit |
5" bit |
6" bit |
8" bit |
10" bit |
12" bit |
15" bit |
20" bit |
24" bit |
| DTH bits Diameter range |
57 64 70 76 (3") |
80 82 90 |
92 95 100 105 110 |
105 110 115 120 125 130 |
130 135 138 140 146 150 152(6") 156 |
152 154 156 159 165 171 178 185 190 203(8") |
200 203 216 219 222 225 229(9") 235 240 254(10") 270 279(11") |
254 270 279 295 305(12") 311 315 330 (13") |
305 311 315 330 343 350 356 368 375 381 (15") |
381 391 413 435 438 445 451 457(18") 464 483(19") 508(20") |
483 508 560(22") 578 610(24") 660(26") |
610 660 724 737 ( 29") 762 (30") 864 (34 ") 914 (36") |
| Specification |
BR1 |
BR2 DHD25 |
DHD35 IR3.5 COP34 BR3 QL30 COP32 M30 |
DHD340A COP44 SD4 M40 SD4 |
DHD55 DHD350R COP54 M50 SD5 QL50 |
DHD65 M60 SD6 QL60 |
DHD85, DHD380, DHD84, M80, SD80, QL80 |
SD10 NUMA100 |
DHD120 NUMA120 NUMA125 |
DHD330 |
DHD450 |
DHD525 |
| Bit details |
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| Bit Face |
Flat |
Flat |
Flat |
Flat |
Flat |
Cancave Canvex |
Cancave Canvex |
Cancave Canvex |
Cancave Canvex |
Cancave Canvex |
Cancave Canvex |
Cancave Canvex |
| Carbide button |
Dome/hemispherical, Paraboli/semi-ballistic, Ballistic |
| Gauge buttons |
|
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8*12, 7*11 |
8*14 |
8*16/18 |
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| Front buttons |
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7*12/13/14 |
8/10*14/15/16 |
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| Buttons Qty |
8 |
10 to 13 |
15 |
15 to 18 |
16 to 18 |
16 to 24 |
18 to 41 |
22 to 41 |
41 to 55 |
45 to 81 |
77to 93 |
75 to 132 |
| Air pressure |
0.7-1.75Mpa |
0.7-1.75Mpa |
1-1.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
1-2.5Mpa |
| Size type |
Normal |
Normal |
Normal |
Normal |
Normal |
Normal |
Normal |
Big size |
Big size |
Big size |
Big size |
Big size |
| Skirt steel |
23CrNi3Mo, 20Cr2Ni4 |
| Production process |
Fully carburized () of special heat treament with stress relief ( ) + full CNC ()for accurate machincal processing for perfect arc of skirt body to assure same consumption of skirt body with YK05 tungsten carbide inserts, which is by cold-inserted techology , no broken and drop in time of drilling |
| Advantage |
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| R. O.P |
fast |
fast |
fast |
fast |
fast |
fast |
fast |
fast |
fast |
fast |
fast |
fast |
| Hole straightness |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
Perfect |
| Hole clean quality |
Good |
Good |
Good |
Good |
Good |
Good |
Good |
Good |
Good |
Good |
Good |
Good |
| Productivity action |
High |
High |
High |
High |
High |
High |
High |
High |
High |
High |
High |
High |
| Drilling life |
Longer |
Longer |
Longer |
Longer |
Longer |
Longer |
Longer |
Longer |
Longer |
Longer |
Longer |
Longer |
| Interchangable |
Ok |
Ok |
Ok |
Ok |
Ok |
Ok |
Ok |
Ok |
Ok |
Ok |
Ok |
|
| Air consumption |
Less |
Less |
Less |
Less |
Less |
Less |
Less |
Less |
Less |
Less |
Less |
|
| Resisitance wear |
High |
High |
High |
High |
High |
High |
High |
High |
High |
High |
High |
|
| Usage |
Quarry |
Quarry |
Quarry |
blasting |
blasting |
blasting |
blasting |
water wells oil gas |
water wells oil gas |
water wells oil gas |
water wells oil gas |
water wells oil gas |
| Worksite test |
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| Rock hardness |
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14-16HRC |
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| Air pressure |
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20KG |
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| Depth meter |
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1.5 M |
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| drilling speed |
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4 minute |
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