Home > Products > Eccentric Overburden Drilling Equipment > Eccenetric Overburden Drilling equipment NOD165
Eccenetric Overburden Drilling equipment NOD165
- 3000 Piece / Pieces per Month
- Shanghai
- T/T Credit Card
Product Details
Place of Origin: | Hunan, China | Brand Name: | New diamond | Model Number: | NOD165 |
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.
NOD165 Eccentric Overburden Drilling Equipment
| 1 | Casing Tube | Maximum O.D.: 195mm Minimum O.D.: 182.6mm |
2 | Drill Pipe | Connection Thread: API3 1/2”Reg O.D.: 114mm Wrench Flats: 95mm | |
3 | Guide Sleeve | Effective length: 225mm | |
4 | DTH-Hammer | ND65, Cop64, NSD6, DHD360, NQL60 | |
5 | Casing Shoe | L3=95mm L4=55mm D3=181.5mm D4=166mm | |
6 | Guide Device | L1=61.5mm L2=181.5mm D1=165mm D2=178mm | |
7 | Reamer | D5=164mm L5=79.5mm Reaming Diameter: 211mm Reamer has 7*14 buttons | |
8 | Pilot Bit | D6=165.8mm L6=82.5mm Gauge button: 8*16 Front button:8*16 |
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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