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

Summary information
8 1/2 inches TCI Tricone Bit
Affiliate classification

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

  Tricone Roller Bits - 8 1/2''
Products Speification              
                                                    Cone Size   8 1/2"
                                               Bearing Type   Elastomer Sealed Bearing
                                                  Tooth Type    TCI
                                          Circulation  Type   Mud Fluid
                                      Thread Connection   4 1/2 Reg Pin
                                         Gauge Protection   Available
                                       Shirttail Protection   Available
Operating Parameters  
                                                   RPM (r/min)


                                                       WOB(KN)   108~258
                                                    Application 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 cones1/3, thirds) of 8 1/2" tricone bits which cone-diameter is 133 mm 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.



Oil/Gas Well Drilling   .Water Well Drilling   .HDD(Trenchless)   .Foundation Piling
 Our Mission:
 Lower the cost of
 Who we are:
 To extract sources of energy underground.  
 To extract the water underground.
 To install pipelines underground with No-Dig. 
 To pile foundation for constructions.
 We are one of the people who makes above easier. 
 Let’s work together and enjoy this job.
A face-to-face meeting is appreciated in below exhibitions, including OTC , Bauma Germany/    China, No-Dig Shows, etc.
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