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.
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Basical Specification |
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Size of Rock Bit |
7 7/8" |
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200mm |
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Bit Type |
Steel Tooth Tricone Bit/ Milled tooth Tricone Bit |
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Thread Connection |
4 1/2 API REG PIN |
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IADC Code |
IADC 127 |
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Bearing Type |
Journal Sealed Roller Bearing |
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Bearing Seal |
Rubber Seal |
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Heel Protection |
Available |
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Shirttail Protection |
Available |
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Circulation Type |
Mud Circulation |
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Drilling Condition |
Rotary drilling,high temp drilling,deep drilling,motor drilling |
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Nozzles |
3 |
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Operating Parameters |
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WOB (Weight On Bit) |
13,486-38,199 lbs |
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60-170KN |
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RPM(r/min) |
60~180 |
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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.