High air pressure drilling/Good quality Eccenetric Overburden Rock Air Drilling Tools(NOD190)/Mining machine parts

FOB Price

US$ 100 - 600 / Piece

2 Pieces(Min. Order)

Port China main port
Payment TermsT/T Credit Card

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Product Details

Place of Origin	Hunan, China	Brand Name	New diamond
Model Number	NOD190	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.

NOD190 Eccentric Overburden Drilling Equipment

1	Casing Tube	Maximum O.D.: 222mm Minimum O.D.: 205mm
2	Drill Pipe	Connection Thread: API3 ¹/₂”Reg O.D.: 114mm Wrench Flats: 95mm
3	Guide Sleeve	Effective length: 285mm
4	DTH-Hammer	ND65, Cop64, SD6, DHD360, QL60
5	Casing Shoe	L3=110mm L4=70mm D3=204.5mm D4=193mm
6	Guide Device	L1=62.5mm L2=184.5mm D1=191mm D2=203mm
7	Reamer	D5=185.5mm L5=90.2mm Reaming Diameter: 237mm Reamer has 7*16mm buttons
8	Pilot Bit	D6=190mm L6=82mm Gauge button: 918mm Face button:916mm

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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

High air pressure drilling/Good quality Eccenetric Overburden Rock Air Drilling Tools(NOD190)/Mining machine parts

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