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Drilling bits in stock IADC127 7 7/8 inches (200mm)

Product Description

Wholesale API milled tooth rock drilling bits in stock based on the lowest price and excellent quality from China supplier.
1) Drill Bit Connection made according to API standard.
2) We can adjust the bit size according to your rig.
3) The best result can be obtained by using the steel-tooth bit in the soft stratum. If mining in hard formation, TCI tricone bitis recommended.
4) Proven cutting structures and bearing designs continue to deliver a superior level of performance and reliability.
5) Optimized hydraulics provide increased ROP by efficiently removing cuttings and ensuring engagement of new rock on everycutting structure rotation.

The roller cone bit is the most widely used tool in petroleum drilling and geological drilling. Tricone bit has the function of impacting, crushing and shearing rock in formation, so it can adapt to soft, medium and hard formation. The cone bit can be divided into milling (steel teeth) cone bit and TCI cone bit according to the type of teeth.

Product Specification

Basical Specification

Size of Rock Bit

7 7/8"

200mm

Bit Type

Steel Tooth Tricone Bit/ Milled tooth Tricone Bit

Thread Connection

4 1/2 API REG PIN

IADC Code

IADC 127

Bearing Type

Journal Sealed Roller Bearing

Bearing Seal

Rubber Seal

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)

13,486-38,199 lbs

60-170KN

RPM(r/min)

60~180

Formation

Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft limestone ,etc.

7 7/8 inches is a regular size in water well drilling, it is working well with small capacity drilling rigs and widely used in the world.
Steel tooth tricone rock bit is also named milled tooth tricone rock bit could drill soft mudstone, even soft limestone, the cones are hard faced by tungsten carbide, the bearing is journal and locked by ball, high grade elastomer(rubber)-HNBR O-ring sealed bearing, grease compensating system lubricate the bearing , the working life is very long.