The DTH is the abbreviation of Down The Hole and sometimes it is also called RAB in some markets, then the RAB is short for Rotary Air Blasting
SINODRILLS GSE Mission DTH Hammers
DTH (down-the-hole) drilling involves a drilling hammer at the bottom of a drill string, the hammer is powered by compressed air transmitted via drilling rod to drive piston and produce impact power, which is then delivered into rocks for drilling and crushing. DTH drilling can be applied in mining, quarrying, water well drilling, foundation piling, etc. DTH hammer uses compressed air to produce impact power, thus to drive drill bits to crush rocks.
Features
• Premium material, fine CNC and heat-treatment manufacturing processes and optimized design;
• Good stability and reliability;
• High impact frequency;
• Lowered compressed air consumption;
• Long lifespan
Applications
Mining, quarrying, water well drilling, geothermal well drilling, foundation piling, etc.
Structure
01 - Top sub
02 - O ring
03 - Check valve dart
04 - Spring
05 - Steel washer
06 - Rigid valve
07 - O ring
08 - Internal cylinder
09 - Piston
10 - Piston case
11 - Guide sleeve
12 - O ring
13 - Retainer sleeve
14 - Bit retainer ring
15 - O ring
16 - Drive sub
GSE Mission30 DTH Hammer
Net weight
23 kg
Rec. hole size
90mm - 105mm
Out diameter
GSE Mission30 DTH hammer length without bits
80 mm
907 mm
Working pressure
Air consumption: M3(CBM)/min
8 bar - 18 bar
@ 10 bar
@ 18 bar
3.8
8
GSE Mission40 DTH Hammer
Net weight
41 kg
Rec. hole size
105mm - 130mm
Out diameter
GSE Mission40 DTH hammer length without bits
99 mm
956 mm
Working pressure
Air consumption: M3(CBM)/min
8 bar - 25 bar
@ 10 bar
@ 18 bar
@ 24 bar
4.5
9
14
GSE Mission50 DTH Hammer
Net weight
74 kg
Rec. hole size
133mm - 152mm
Out diameter
GSE Mission50 DTH hammer length without bits
126mm
1079 mm
Working pressure
Air consumption: M3(CBM)/min
8 bar - 30 bar
@ 10 bar
@ 18 bar
@ 24 bar
6.5
12.5
17
GSE Mission60 DTH Hammer
Net weight
105 kg
Rec. hole size
152mm - 254mm
Out diameter
GSE Mission60 DTH hammer length without bits
144 mm
1108 mm
Working pressure
Air consumption: M3(CBM)/min
8 bar - 35 bar
@ 10 bar
@ 18 bar
@ 24 bar
7.5
16
24
GSE Mission80 DTH Hammer
Net weight
193 kg
Rec. hole size
192mm - 305mm
Please contact our sales team for more specifications.
Out diameter
GSE Mission80 DTH hammer length without bits
182 mm
1297 mm
Working pressure
Air consumption: M3(CBM)/min
8 bar - 35 bar
@10 bar
@ 18 bar
@ 24 bar
10
24
33