Atlas Copco
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Authorized distributor
TheTerranox
product range
The Terranox DTH hammer comes in five
sizes. Choosing the right hammer is largely determined by hole
size and type of ground conditions. Ideally, the size of the
hammer should match the required hole dimension as closely as
possible, leaving just enough space for cuttings to evacuate the
hole.
Terranox DTH hammers
Description
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Thread connection
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Outside diameter
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Rec. hole size
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Shank
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style
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mm
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inch
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mm
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inch
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Terranox 3
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API 2 3/8 Reg PIN
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79
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3
1/8
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88 - 105
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3 7/16 - 4 1/8
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DHD
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Terranox 4
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API 2
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3/8 Reg BOX
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92
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3
5/8
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105 - 127
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4 1/8 - 5
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DHD
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Terranox 5
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API 3
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1/2 Reg PIN
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115
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4
1/2
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130 - 152
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5 1/8 - 6
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DHD
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Terranox 6
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API 3
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1/2 Reg PIN
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137
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5
3/8
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152 - 216
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6 - 8 1/2
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DHD
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Terranox 8
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API 4
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1/2 Reg PIN
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181
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7
1/8
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200 - 270
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7 7/8 - 10 5/8
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DHD
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* shoulder to
shoulder
Service and tuning kits
In abrasive drilling conditions, partly external
components of the DTH hammers are subject for excessive
flush blasting and is wearing out before the internal
parts reaches their fatigue limits.
Wear often
appears on the chuck itself or on the cylinder at the
chuck-end. For this reason many of the Terranox hammers
are designed with reversible cylinders. With help of
defined service kits the hammers can be rebuilt and most
internal parts re-used for another run.
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Use of service kits, extends the total hammer life and
substantially reduces the total drilling cost, as the cost
for service kits is only approximately 10% of a new hammer
Terranox hammers are, for optimized drilling performance
and hole cleaning, fitted with choke plugs to enable a
ultimate tuning of the hammer for each occasion and use.
Replacement choke plugs are included in the Terranox
tuning kits. For easy logistics defined kits containing
the vital parts are available for each hammer.
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COP hammer
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Outside
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Rec. hole size
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Thread
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diameter
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Description
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Shank style
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connection
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mm
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inch
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mm
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inch
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2"
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COP 20
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RD 50-6 Box
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62
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2 7/16
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70-96
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2 3/4-3 3/4
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BR 2
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3.5"
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COP 35
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API 2 3/8 Reg Pin
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79
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3 1/8
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88-105
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3 7/16-4 1/8
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DHD 3.5
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COP 35 Slim
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API 2 3/8 Reg Pin
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76
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3
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85-105
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3 7/16-4 1/8
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DHD 3.5
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4"
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COP 44 STD
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API 2 3/8 Reg Pin
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98
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3 7/8
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110-125
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4 5/16-4 15/16
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DHD 340
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COP 44 Gold
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API 2 3/8 Reg Pin
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100
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3 15/16
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110-130
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4 5/16-5 1/8
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TD 40
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COP 44 Gold
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API 2 7/8 Reg Pin
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100
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3 15/16
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110-130
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4 5/16-5 1/8
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TD 40
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COP 44 Gold
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CUBEX #24
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100
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3 15/16
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110-130
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4 5/16-5 1/8
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TD 40
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API 2 3/8 Reg Pin
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114
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4 31/64
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115
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4 1/2
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TD 40
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API 2 3/8 Reg Pin
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114
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4 31/64
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115
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4 1/2
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TD 40
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5"
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COP 54 STD
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API 2 3/8 Reg Pin
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120
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4 3/4
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134-152
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5
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1/4-6
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DHD 350
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COP 54 STD
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API 3 ½ Reg Pin
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120
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4 3/4
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134-152
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5
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1/4-6
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DHD 350
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COP 54 QM
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API 3 ½ Reg Pin
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126
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4 15/16
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134-152
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5
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1/4-6
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DHD 350
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COP 54 Gold
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API 3 ½ Reg Pin
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115
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4 1/2
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127-152
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5-6
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QL 50
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"Slim"
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COP 54 Gold
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API 3 ½ Reg Pin
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120
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4 3/4
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134-152
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5
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1/4-6
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QL 50
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COP 54 Gold
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API 3 ½ Reg Pin
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126
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4 15/16
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140-152
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5
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1/2-6
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QL 50
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QM
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6"
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COP 64 STD
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API 3 ½ Reg Pin
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142
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5 9/16
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156-178
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6
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1/8-7
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DHD 360
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COP 64 QM
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API 3 ½ Reg Pin
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146
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5 3/4
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165-178
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6
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1/2-7
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DHD 360
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COP 64 Gold
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API 3 ½ Reg Pin
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142
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5 9/16
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156-178
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6
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1/8-7
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QL 60
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COP 64 Gold QM
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API 3 ½ Reg Pin
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146
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5 3/4
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165-178
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6 1/2-7
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QL 60
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COP 66 QM
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API 3 ½ Reg Pin
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146
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5 3/4
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165-178
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6 1/2-7
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COP 66
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COP 66 QM
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API 3 ½ IF Pin
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146
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5 3/4
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165-178
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6 1/2-7
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COP 66
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COP 66 QM
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BECO 3 ½ Pin
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146
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5 3/4
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165-178
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6 1/2-7
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COP 66
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COP 66 QM
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CUBEX #28 Pin
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146
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5 3/4
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165-178
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6 1/2-7
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COP 66
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Selecting the right hammer
The optimum range of hole size for blast hole drill- ing
with DTH is 90 mm to 254 mm (3 ½"-10"). Smaller blast
holes are generally drilled using tophammer, and larger
holes generally use rotary machines.
In other applications, like foundation drilling,
DTH hammers can be used with single bit in hole sizes up
to 914 mm (36"). With multiple hammer units CD (Cluster
Drills) drill holes up to 70" or 1778 mm as standard.
Larger cluster drills can be delivered as per customer
request.
As a rule of thumb, the smallest hole diameter a
DTH hammer can drill is its nominal size. A 4 inch hammer
will drill a 4 inch (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
inch, so for a 4 inch hammer the maximum hole size is 5
inch (127-130 mm).
Choosing the right hammer is largely determined by
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
cuttings to evacuate the hole.
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Secoroc hammers are purpose-matched for all rock types and
applications. Where high performance is the main
criterion, Secoroc COP Gold hammers or the new 6" COP 66
hammer are recommended in blast hole drilling and Secoroc
QLX hammers in deep hole drill- ing applications.The QLX
hammer has proven superior performance and adaptability to
different air require- ments thanks to the Air Select
System.
Where proven technology is required, the Secoroc
COP and QL hammers are known for their reliability and
longevity.They are practically bullet proof, making them
useful for production drilling in quarries, shallow water
well drilling, and underground blasthole drilling.
QM is similar to Standard, but with heavy duty
chuck and wear sleeve, and a top sub fitted with tungsten
car- bide buttons for wear protection in harsh and
abrasive conditions.These also protect the top sub from
exces- sive wear when rotating out of the hole through
broken rock.
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QL HAmmers
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Outside
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Rec. hole size
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Thread
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diameter
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Description
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Shank style
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connection
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mm
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inch
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mm
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inch
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4"
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QL 340 STD
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API 2 3/8 Reg Pin
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100
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3 15/16
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110-130
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4 5/16-5 1/8
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DHD 340
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5"
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QL 50 STD
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API 3 1/2 Reg Pin
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117
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4
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5/8
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130-152
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5 1/8-6
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QL 50
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QL 50 HF
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API 3 1/2 Reg Pin
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117
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4
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5/8
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130-152
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5 1/8-6
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QL 50
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QL 50 HC
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API 3 1/2 Reg Pin
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117
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4
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5/8
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130-152
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5 1/8-6
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QL 50
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QL 55 QM
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API 3 1/2 Reg Pin
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124
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4
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7/8
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134-152
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5 1/4-6
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QL 50
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6"
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QL 60 STD
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API 3 1/2 Reg Pin
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138
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5 7/16
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152-191
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6-7 1/2
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QL 60
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QL 60 HF
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API 3 1/2 Reg Pin
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138
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5 7/16
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152-191
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6-7 1/2
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QL 60
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QL 60 HC
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API 3 1/2 Reg Pin
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138
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5 7/16
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152-191
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6-7 1/2
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QL 60
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QL 65 QM
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API 3 1/2 Reg Pin
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146
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5
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3/4
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165-191
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6 1/2-7 1/2
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QL 60
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8"
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QL 80 STD
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API 4 1/2 Reg Pin
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181
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7
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1/8
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200-305
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7 7/8-12
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QL 80
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QL 80 STD
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BECO 4 1/2 Pin
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181
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7
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1/8
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200-305
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7 7/8-12
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QL 80
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QL 80 HF
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API 4 1/2 Reg Pin
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181
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7
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1/8
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200-305
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7 7/8-12
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QL 80
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QL 80 HC
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API 4 1/2 Reg Pin
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181
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7
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1/8
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200-305
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7 7/8-12
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QL 80
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QL 85 QM
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API 4 1/2 Reg Pin
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194
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7
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5/8
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216-305
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8 1/2-12
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QL 80
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QL 85 QM
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BECO 4 1/2 Pin
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194
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7
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5/8
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216-305
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8 1/2-12
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QL 80
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QL 85 QM 1400cfm
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API 4 1/2 Reg Pin
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194
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7
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5/8
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216-305
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8 1/2-12
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QL 80
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QL 85 QM 1400cfm
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BECO 4 1/2 Pin
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194
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7
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5/8
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216-305
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8 1/2-12
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QL 80
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12"
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QL 120 STD
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API 6 5/8 Reg Pin
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285
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11 1/4
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311-560
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12 1/4-22 1/16
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QL 120
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QL 120 STD BO
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API 6 5/8 Reg Pin
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285
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11 1/4
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311-560
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12 1/4-22 1/16
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QL 120
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QL 120 HC
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API 6 5/8 Reg Pin
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285
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11 1/4
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311-560
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12 1/4-22 1/16
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QL 120
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20"
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QL 200
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API 8 5/8 Reg Pin
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396
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15
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9/16
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440-660
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17 15/16-26
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QL 200
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QL 200 S
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API 8 5/8 Reg Pin
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396
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15
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9/16
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710-914
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28-36
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QL 200 S
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30"
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QL 300 STD
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BECO 16 PIN
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660
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26
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760-915
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29 15/16-36
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QL30
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QL 300 S
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BECO 16 PIN
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660
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26
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965-1220
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38-48 1/16
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QL30
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Selecting the right bit
Atlas Copco Secoroc has a comprehensive range of DTH drill
bits to match all conceivable applications. Each bit is
made from quality alloy steel, and has been precision
machined to produce a perfect body, heat treated to the
required hardness, given surface compression for fatigue
resistance, and fitted with precision buttons manufactured
in-house.
Five basic designs are available: Convex, Flat
front, SpeedBit, Concave, and RocketBit.These are designed
for specific applications for all rock types, hardness's
and conditions.
Bit life and rate of penetration
are the most important criteria in selecting the right bit
for a particular application. In most cases, the focus is
on productivity, so the fast cuttings removal features of
the SpeedBit and Convex/Ballistic designs are preferable,
to ensure the buttons are cutting clean, with the minimum
of recrushing. |
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In hard and abrasive formations, however, the flat front
design offers best bit life, having strong gauge rows with
large spherical buttons which are easy to regrind and
maintain.The SpeedBit offers improved productivity with
the same gauge as the Flat front, but with ballistic
buttons in the front for faster penetration.
An alternative is the Concave design with
spherical buttons. The RocketBit can be dressed with
ballistic buttons for use in soft to medium hard
formations where fractured rock can be expected, or can be
supplied with spherical buttons for hard and abrasive
formations. Bits are manufactured to match all diameters
of Secoroc hammers.  |
Drill
bits standard assortment
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Flat front
Applications: Hard and abrasive formations,
all round.
Typical formations Granite, hard lime- stone, basalt. |
SpeedBit
Applications: Medium hard to hard and abrasive
formations. For higher productivity. Design feature: Ballistic buttons
in front.
Typical formations Granite, hard lime- stone, basalt. |
Convex front, ballistic
Applications: Soft to medium hard
rock. Non abrasive formations. High penetration rate.
Typical
formations Limestone, hard limestone, shale. |
Concave front
Applications: Medium hard to hard
formations. Less abrasive, fractured formations. Excellent control over hole
deviation. Design feature: HD - larger gauge buttons. DGR - double
(overlapPing) gauge row. Only from 8".
Typical formations Granite,
hard lime- stone, basalt. |
RocketBit
Applications: Soft to medium hard formations. For
exceptional productivity. Fractured rock. Design feature: Spherical buttons
for hard and abrasive formations. Ballistic buttons for soft formations
Typical formations Limestone, hard lime- stone.
|

Matching hammer and casing diameter
For proper selection of Terranox hammer to match casing
diameter, please use cross reference table below. Casing size and
drilling conditions will be decisive factors when selecting casing
advancement system.
Hammer description
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Casing diameter range
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mm
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inch
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Terranox 3
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114.3
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4 1/2
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Terranox 4
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139.7 - 152.4
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5 1/2 -6
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Terranox 5
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168.3 - 177.8
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6 5/8 - 7
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Terranox 6
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193.7 - 244.5
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7 5/8 - 9 5/8
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Terranox 8
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244.5 - 323.9
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9 5/8 - 12 3/4
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Selecting compressor capacity
The Terranox hammer range is designed for a maximum
working pressure of 25 bar. In overburden drilling applications the air pressure is normally recommended to be
kept in the range of 12-14 bars. However, for proper hammer
performance throughout the entire drilling operation, the compressor
model should be selected to match the corresponding maximum hammer air
consumption, shown below.
Drill rig requirements
For proper hammer performance, the geotechnical
drilling rig should be equipped with a rotation unit providing minimum
torque as per the table shown below.
Hammer description
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Minimum torque
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Nm
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lb ft
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Terranox 3
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600
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440
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Terranox 4
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1 500
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1 020
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Terranox 5
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2 000
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1 480
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Terranox 6
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3 000
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2 210
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Terranox 8
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8 000
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5 900
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Hammer description
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Air consumption (at 24.1 bar)
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l/s
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scfm
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Terranox 3
|
239
|
506
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Terranox 4
|
292
|
618
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Terranox 5
|
358
|
760
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Terranox 6
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459
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973
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Terranox 8
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725
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1 538
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Above
specifications/ratings are based on initial factory setting
A complete package from Atlas Copco
Casing advancement systems
Atlas Copco offers three casing
advancement systems: Symmetrix, Elemex and Odex. With
these systems a casing pipe is installed simultaneously as
the hole is drilled. The casing prevents the hole from
collapsing.
Using the Atlas Copco casing
advancement systems is particularly advantageous for
foundation works or well drilling in urban areas. The
systems offer high productivity even if the ground
contains boulders, concrete blocks or old foundations
which are hard to penetrate and they can easily drill a
rock socket into the bedrock if |
|
required. When used for micropiling, cased piles can
accommodate large load concentrations also from lateral forces.
The drilling principle is based on a pilot bit and a reamer bit, which
together drill a hole larger than the external diameter of the steel
casing. This enables the casing pipe to follow the drill bits down the
hole.
Odex has an eccentric reamer bit while Symmetrix and Elemex feature a
concentric reamer called ring bit.
|
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Symmetrix
The concentric drill bit design gives Symmetrix plenty
of benefits: incomparable hole straightness, deep drilling capability
and incredible quick pile setting. Symmetrix is ideal tool for all
kind of ground conditions and superior when there are big obstacles in
the ground or sloping bedrock exists.For well drilling, the Symmetrix range offers drill-throughsystems. When the
surface portion is cased and sealed in the overburden layer, the pilot
bit can drill further into the bedrock without having to change
drilling equipment. Symmetrix is also capable for all types of
micropiling work whether there is an end-bearing or friction pile to
be drilled.
|
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|
Elemex
The Elemex system design is based on the Symmetrix
concentric system but is especially designed for DTH drilling in urban
areas or sensitive ground. The unique concept behind the Elemex design
is built on redirection of the air flow. Once the air reaches the bit
face, it is blown against the extended ring bit walls which redirects
the flow across the face. This way, the air pressure is decreased just
enough to allow an efficient flushing of the bit face without escaping
to the surrounding ground. Elemex is gentle on the surrounding but
tough on the boulders that might come in its way.
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Odex
The eccentric, retrievable Odex system is ideal for short holes up to 273 mm
(10 3/4") in diameter. Well drillers often have an Odex drill bit at
hand for simultaneous casing of water and geothermal wells. Odex
offers quick and cost efficient drilling. When a casing has been
installed, the complete drill bit is retrieved €“ ready to drill
the next hole. Odex system was originally developed, in the late
1960's, as a reliable method for micropiling with steel core piles, as
is today still very popular when drilling in basic ground conditions.
|
Reverse
Circulation
Atlas Copco Secoroc's reverse circulation hammers are
specifically designed for all kind of exploration drilling (deep hole
and pit grade control applications).
Whether you are exploring potential sites or working an
existing mine, the Secoroc RC hammer will assure of high performance,
exceptional reliability and dependable support.

RC 50 hammer
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Outside
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Rec. hole size
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|
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diameter
|
Shank
|
Description
|
Thread connection
|
|
|
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|
|
style
|
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|
mm
|
inch
|
mm
|
inch
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5"
|
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RC 50 STD
|
4 1/2" Remet Box
|
130
|
5.13
|
136-165
|
5 3/8 - 6 ½
|
RC 50
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RC 50 bit
assortment
|
Diameter
|
No. × Button diameter, mm (inch)
|
Gauge/Button angle°
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|
Inner
holes
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mm
|
inch
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Outer
|
Inner
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Front
|
Outer
|
Inner
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|
|
|
|
|
|
|
136
|
5
|
3/8
|
8 x 16 (5/8)
|
4 x 12,7 (1/2)
|
4 x 16 (5/8)
|
35
|
|
No
|
140
|
5
|
1/2
|
8 x 16 (5/8)
|
4 x 12,7 (1/2)
|
4 x 16 (5/8)
|
35
|
|
No
|
143
|
5
|
5/8
|
8 x 16 (5/8)
|
4 x 12,7 (1/2)
|
4 x 16 (5/8)
|
35
|
|
No
|
146
|
5
|
3/4
|
8 x 16 (5/8)
|
4 x 12,7 (1/2)
|
4 x 16 (5/8)
|
35
|
|
No
|
152
|
|
6
|
8 x 16 (5/8)
|
4 x 12,7 (1/2)
|
4 x 16 (5/8)
|
35
|
|
No
|
165
|
6
|
1/2
|
8 x 16 (5/8)
|
6 x 12,7 (1/2)
|
4 x 16 (5/8)
|
35
|
|
No
|
Top 
|