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Rotary roller bits IADC637 9 7/8 ” (250.8mm)

Product Description

Wholesale API TCI tricone drill bits with discounted price in the stock from China factory for hard formations.
Bit Description:
IADC: 637 - TCI journal sealed bearing bit with gauge protection for medium hard formations with high compressive strength.
Compressive Strength:
100 - 150 MPA
14,500 - 23,000 PSI
Ground Description:
Hard,well-compacted rocks such as:hard silica limestones,quarzite streaks,pyrite ores,hematite ores,magnetite ores,chromium ores,phosphorite ores and granites.
Far Eastern Drilling can offer TCI bits in avariety of sizes (from 3 3/8" to 26") and all most of IADC codes.

9 7/8" is 250mm in diameter, the thread connection is 6 5/8 reg pin according to API specification.
IADC537 means that tricone roller bit is suitable for drilling hardness rocks like quarzite streaks,granites, etc. The bearing is elastomer sealed to increase working life.
Tungsten carbide inserts(TCI) is very hard alloy to drilling hard rocks, the heel of cones and arm-back are full inserted with Tungsten Carbide teeth.
It is a common size in mining field, to drill blast hole. In mining drilling, first number for IADC code are usually 6,7,8,and the third number are usually 2 and 5.
According to IADC specifications for tricone bit,"2" means standard open bearing roller bit,and "5" means sealed roller bearing bit with gauge protection.
In some countries, 9 7/8"(250.8mm) is often used to drill water well and geothermal well. Drill rig is circulated by mud fluid,instead of compressing air.
Therefore, for different applications, we should choose the right tricone roller bits.

Product Specification

Basical Specification

Size of Rock Bit

9 7/8  inches

250mm

Bit Type

TCI Tricone Bit

Thread Connection

6 5/8 API REG PIN

IADC Code

IADC 637G

Bearing Type

Journal Sealed Bearing with Gauge Protection

Bearing Seal

Elastomer or Rubber/ Metal

Heel Protection

Available

Shirttail Protection

Available

Circulation Type

Mud Circulation

Drilling Condition

Rotary drilling,high temp drilling,deep drilling,motor drilling

Nozzles

3

Operating Parameters

WOB (Weight On Bit)

28,088-67,410 lbs

125-300KN

RPM(r/min)

40~180

Formation

Medium formation with low compressive strength,such as medium,soft shale,medium soft limestone,medium soft limestone,medium soft sandstone, medium formation with harder and abrasive interbeds,etc.

Far Eastern are factory specializes in drill bits,such as tricone bits, PDCs bits, HDD hole opener,Foundation roller cutters for many different applications.The application including oil field,natural gas, geological exploration ,directional boring,mining,water well drilling ,HDD, Construction and foundation...
As a leading drill bits factory in China,increase the drill bit working life is our target. We always try to improve the bits with high penetration rates.Our mission is lower the cost of drilling-per-meter. .Our purpose is to sell the high quality with the lowest price.