8 1/2"(215.9mm) TCI Tricone Bit IADC637G for Hard Rock Drilling

8 1/2 inches TCI Tricone Bit

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carbide insert bit drill tricone bit rock drill bit 215mm tricone rock bit for oil drill drill rock bit pilot bit reamer

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Introduce

Specifications

Diameter	8 1/2"(215.9mm)
Bearing Type	Elastomer sealed bearing
Tooth Type	TCI(Tungsten Carbide Inserts)
Circulation Type	Mud fluid
Thread Connection	4 1/2 reg pin
Gauge Protection	Available
Shirttail Protection	Available

Operating Parameters

RPM(r/min)

80-40

WOB(KN)

108-258

Formations

Hard formation with high compressive strength, such as hard shale, sandstone, dolomite, hard gypsum, chert, granite, etc.

8 1/2 inches(215.9mm) tricone bit is a very regular size. Applications covers vertical well drilling like water well drilling, oil/gas well, and horizontal drilling like trenchless/No-Dig/HDD application.

Besides that, (roller cones 1/3, thirds) of 8 1/2" tricone bits which cone-diameter is 133mm are widely used in foundation rock piling field.

Steel raw materials 15CrNiMo for the arm and 15MnNi4Mo for the cone, the cutting teeth which we call it Inserts or TCI(Tungsten Carbide Insert) is hard alloy for drilling hard rocks, especially the IADC637G that has conical ball shape tungsten carbide inserts or spherical shape inserts has very good performance in drilling hard rocks.

The bearing is vital to the working-life of tricone bit, we adopt the most advanced design and precise CNC machine and following API specification to warranty quality.

Regular Models


12 1/4"(311.1mm) IADC637G	17 1/2" (444.5mm) IADC537G	12 1/4"(311.1mm) IADC137G	17 1/2"(444.5mm) IADC135G

8 1/2"(215.9mm) PDC Bit	12 1/4"(311.1mm) PDC Bit	Bi Center Bit	PDC Reaming Bits

24" Hole Opener	28" Hole Opener	14" PDC Reamer	18" PDC Reamer

Tricone Bit Thirds	Replaceable Roller Cone Bits	Block Roller Bits	Core Barrel