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Technical Specifications


9 5/8 MC30

Diameter: 244.5mm (9 5/8")  
IADC Code: 312C  
Design number: T28  
State standard designation: Т-ПВ  


Gradient angle of axle journal 38°
Axle journal offset relative to drill bit axis 1.00 mm
Bearing type Roller bearing
Sealing None
Total number of inserts (inner/heel row) 169 (108/61)
Total number of insert rows (inner/heel row) 11 (8/3)
Number of changeable nozzles 0
Connecting thread 3-121 ук. (-)
Drill bit net weight, kg 39.00
Drill bit gross weight, kg 41.40

Recommended Drilling Conditions

Rotation speed 115-60 rpm
Thrust load 11.00-20.00 t (24200 - 44000 lbs)
The lower level of rotation speed value corresponds the upper level of thrust load value and vice versa.



Design Features


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