Home > Products > Eccentric Overburden Drilling Equipment > Eccenetric Overburden Rock Air Drilling Tools(NOD115)/Mining machine parts
Eccenetric Overburden Rock Air Drilling Tools(NOD115)/Mining machine parts
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Product Details
Place of Origin: | Hunan, China | Brand Name: | New diamond | Model Number: | NOD115 |
Type: | Drill Bit | Machine Type: | Drilling Tool | Certification: | Other, ISO9001:2008 |
Material: | Carbide | Processing Type: | Forging | Use: | Ore Mining |
Product Description
Eccentric Overburden Drilling Equipment:
1. 10 years manufacturing experience;
2. Certificate: ISO9001:2008
3. Material: Carbide
Eccentric Reamer System Step-by-step
1. When drilling starts, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly.
2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in , allowing the drill bit assembly to be pulled up through the casing.
3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.
4. Drilling continues to the desired depth in the bedrock using a conventional drillstring.
NOD115 Eccentric Overburden Drilling Equipment
| 1 | Casing Tube | Maximum O.D.: 142mm Minimum O.D.: 128mm |
2 | Drill Pipe | Connection Thread: API2 3/8”Reg O.D.: 76mm Wrench Flats: 65mm | |
3 | Guide Sleeve | Effective length: 174mm | |
4 | DTH-Hammer | ND45, Cop44, NSD4, DHD340A, NQL40, NM4 | |
5 | Casing Shoe | L3=76mm L4=55mm D3=127.5mm D4=117mm | |
6 | Guide Device | L1=48mm L2=136mm D1=115mm D2=126mm | |
7 | Reamer | D5=114mm L5=89mm Reaming Diameter: 152mm Reamer has 5*14 buttons | |
8 | Pilot Bit | D6=114mm L6=67mm Gauge button: 8*14 Front button:6*12 |
Technical Data
Contact Us
- Hunan New Diamond Construction Machinery Co., Ltd.
- Contact nameRick Liao
- Phone0086-731-89708148
- AddressMeiguiyuan, Yuelu district, Changsha city, Hunan, China Changsha,Hunan
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