Hunan New Diamond Construction Machinery Co., Ltd.: Yueyang, Hunan, China; Main products: DTH Hammers, Drill Bits, Spare Parts

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Home > Products > Eccentric Overburden Drilling Equipment > Eccenetric Overburden Rock Air Drilling Tools(NOD140)/High air pressure drilling

Eccenetric Overburden Rock Air Drilling Tools(NOD140)/High air pressure drilling

FOB Price

US$ 350 - 1,050 / Piece

2 Pieces(Min. Order)

Port Shanghai
Payment TermsT/T Credit Card

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Product Details

Place of Origin	Hunan, China	Brand Name	New diamond
Model Number	NOD140	Type	Drill Bit
Machine Type	Drilling Tool	Certification	Other, IS9001:2008
Material	Carbide	Processing Type	Forging
Use	Ore Mining

Product Description

Specifications

Overburden Drilling
1.Efficient energy transfer
2.Faster drilling speed
3.Lower oil consumption
4.Longer life,less fail

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.

NOD140 Eccentric Overburden Drilling Equipment

1	Casing Tube	Maximum O.D.: 171mm Minimum O.D.: 155.6mm
2	Drill Pipe	Connection Thread: API2 ³/₈”Reg O.D.: 89mm Wrench Flats: 65mm
3	Guide Sleeve	Effective length: 205mm
4	DTH-Hammer	ND55, Cop54, NSD5, DHD350R, NQL50
5	Casing Shoe	L3=90mm L4=63mm D3=155.3mm D4=143mm
6	Guide Device	L1=55mm L2=160mm D1=141mm D2=154mm
7	Reamer	D5=138mm L5=69.5mm Reaming Diameter: 185mm Reamer has 7*14 buttons
8	Pilot Bit	D6=138mm L6=66mm Gauge button: 816 Front button:814

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Hunan New Diamond Construction Machinery Co., Ltd.: Contact nameRick Liao
Chat Now; Phone0086-731-89708148; AddressMeiguiyuan, Yuelu district, Changsha city, Hunan, China, Yueyang, Hunan

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Product Categories

Back Hammers	Crown Hole Opener Bits	Cutters Bits	DTH Bits
DTH Hammers	DTH Hole Opener Bits	Eccentric Overburden Drilling Equipment	Long Shank Bits
New Products	Others	Pilot Bits	Reverse Circulation RC Drill Bit
Reverse Circulation RC Hammers	Symmetric Overburden Drilling Equipment	Thread Bits	Threaded Hole Opener Bits

Eccenetric Overburden Rock Air Drilling Tools(NOD140)/High air pressure drilling

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