6 1/8 in MDiZ613(155.575 mm)

Product ID: 66477A0001 ER 26693

Design Specifications

Total Cutters31
Cutter Size13mm (1/2 in)
Face Cutters(20) 13mm
Gauge Cutters(7) 13mm
Cone Cutters(4) 13mm
Blade Count6
Nozzles4 Standard Series 50N, 2 Standard 14 Fixed Port
Bit Connection3 1/2 Reg
Junk Slot Area (sq in)7.438
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 8 3/16 in Overall: 11 7/8 in
Fishing NeckDiameter: 4 1/2 in Length: 3 1/8 in

Operating Parameters

Bit SpeedSuitable for Rotary and PDM
Weight-on-Bit2,500 To 19,000 (lbs)
1,136 To 8,636 (daN)
1 To 9 (Tonnes)
Flow Rate (GPM)150 To 300
Hydraulic Horsepower (HSI)1 To 6
Recommended Make-up Torque6,600 To 9,850 pound ft
The operating parameters listed here are general parameters, please contact your local Smith Bits representative for precise recommendations for your individual well.



The PX feature places thermally stable diamond inserts (TSP) on the gauge to maximize gauge retention and extend bit life.

Bit design is available with RockStorm PDC technology. These all-in-one cutters break the paradigm and provide ultimate wear resistance and ultimate impact resistance in the same PDC cutter. As a result, faster drilling rates are delivered while increasing overall run length.