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Technical Specifications


3 2/3 MC30

Diameter: 93.0mm (3 2/3")  
IADC Code: 312C  
Design number: T125  
State standard designation: Т-ПН  


Gradient angle of axle journal 36°
Axle journal offset relative to drill bit axis 0.50 mm
Bearing type Journal bearing
Sealing None
Total number of inserts (inner/heel row) 62 (29/33)
Total number of insert rows (inner/heel row) 7 (4/3)
Number of changeable nozzles 0
Connecting thread 3-50 (-)
Drill bit net weight, kg 2.70
Drill bit gross weight, kg 3.20

Recommended Drilling Conditions

Rotation speed 115-60 rpm
Thrust load 3.00-7.00 t (6600 - 15400 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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