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7.5in Steel Tooth Tricone Drill Bit

China 7.5in Steel Tooth Tricone Drill Bit, Find details about China Tricone Bits, Drill Bits from 7.5in Steel Tooth Tricone Drill Bit

Model NO.
7.5in
Number of Shaft
3
Controlling Mode
Artificial
Structure
Deep Hole Drilling
Precision
High Precision
Condition
New
Wob
0.4-1.0kn/mm
Rpm
120-50
Trademark
hengji
Transport Package
Wooden Case
Specification
ISO
Origin
Hebei Hejian
HS Code
82071990
Model NO.
7.5in
Number of Shaft
3
Controlling Mode
Artificial
Structure
Deep Hole Drilling
Precision
High Precision
Condition
New
Wob
0.4-1.0kn/mm
Rpm
120-50
Trademark
hengji
Transport Package
Wooden Case
Specification
ISO
Origin
Hebei Hejian
HS Code
82071990
We guaranteed products at a competitive price and high quality. At present, our products have a very good sale in
Domestic and overseas market. We wish to cooperate with you to create a bright future and mutual benefit. Much appreciation for your prompt attention in advance, we are eager to look forward to hearing from you soon.

Rubber sealed sliding bearing bits are sealed by special type "O". Under the normal rotary speed conditions, they can stand high bit pressure. The bore surface of the cone has been treated with special techniaue in order to improve sliding motion of the bearing. And every performance is improved greatly.
1 O-shape seal ring with high saturation butadience acrylonitrile rubber improved the bearing sealed reliability.
2 To adapt high strength and toughness hard alloy teeth, the shock resistance has been increased and the breakage rate has been decreased.
3 The bearing contact surface, neck journal of jaw have been adapted to wear resistance alloy materials, the special craft processing has been applied in the bore surface of the cone which increases the load capability and the working life.
4 Optimized tooth number of cone and height of tungsten carbide tooth which improved the total cutting property and drilling footage.
5 High-performance lubricant grease has been applied in bearing which increased lubricating and protecting.
IADCWOBRPMApplicable Formations
(KN/MM)(r/min)
(Bit Dia)
116  1170.35~0.8150~80Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk etc.
126  1270.35~0.9150~70Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,softshale.soft limestone,ect.
136  1370.35~1.0120~60Soft to mesium soft formations with low compressive strength and high drillability.such as medium soft shale,hard gypsum,medium soft limestone.medium soft sandstone soft formation with harder nterbeds,ect.
216  2170.4~1.0100~60Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft formation with harder interbeds ect.
246  2470.4~1.080~50Medium hard formations with high compressive strength,such as abrasive shale.limestone,sandstone,dolomite,hard gypsum,marble,ect.
417  4370.35~0.9150~70Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk,gypsum,salt,soft shale,soft limestone,etc.
447
517  5270.35~1.0140~60Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,soft shale.soft limestone,ect.
537  5470.45~1.0120~50Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds,ect.
617  6270.45~1.190~50Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,ect.
6370.5~1.280~40Hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble,ect.

 
 

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