12 1/4 in SDiZ519(311.15 mm)

Product ID: 66223A0001 ER 26488

Design Specifications

Total Cutters39
Cutter Size19mm (3/4 in)
Face Cutters(21) 19mm
Gauge Cutters(10) 19mm
Cone Cutters(8) 19mm
Blade Count5
Nozzles7 Standard Series 60N
Bit Connection6 5/8 Reg
Junk Slot Area (sq in)48.64
GaugeLength: 8" Protection: Options Available
LengthMake-Up: 16 3/4 in Overall: 21 11/16 in
Fishing NeckDiameter: 7 7/8 in Length: 3 7/16 in

Operating Parameters

Bit SpeedRotary, Steerable PDM & Rotary Steerable
Weight-on-Bit6,000 To 40,000 (lbs)
2,727 To 18,180 (daN)
3 To 18 (Tonnes)
Flow Rate (GPM)500 To 1200
Hydraulic Horsepower (HSI)1 To 6
Recommended Make-up Torque47,300 To 47,800 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 extends PDC bit life by reinforcing its gauge areas with diamond-enhanced inserts (DEI) set in highly wear-resistant tungsten carbide.

Bit design is available with ONYX fixed cutters for improved thermal stability in harder, more abrasive formations, resulting in greater wear resistance.

Increased cleaning, cooling, and cuttings evacuation with available hydraulic flows; high flow rates with minimal increase in pump pressure, and reduced risk a bit balling.