10 5/8 in MDSiZ716(269.875 mm)

Product ID: 66157A0001 ER 26434

Design Specifications

Total Cutters75
Cutter Size16mm (5/8 in)
Face Cutters(32) 16mm
Gauge Cutters(9) 16mm
Cone Cutters(8) 16mm
Back-Up Cutters(26) 16mm
Blade Count7
Nozzles7 Standard Series 60N
Bit Connection6 5/8 Reg
Junk Slot Area, in218.079
GaugeLength: 3" Protection: Options Available
LengthMake-Up: 11.743 Overall: 16.681
Fishing NeckDiameter: 8 Length: 4.64

Operating Parameters

Bit SpeedRotary Steerable BHA
Weight-on-Bit5,000 To 40,000 (lbs)
2,272 To 18,180 (daN)
2 To 18 (Tonnes)
Flow Rate galUs/min450 To 900
Hydraulic Horsepower, HSI1 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 Stinger element features a highly distinctive conical geometry with a thick synthetic diamond layer, engineered to resist high impact loads and abrasive wear for superior durability.

The center location of the Stinger conical diamond in the bit enhances its stability to mitigate whirl and other artifacts that waste energy and reduce ROP. The Stinger element also provides an efficient mechanism to drill the very center of the borehole.

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 ONYX fixed cutters for improved thermal stability in harder, more abrasive formations, resulting in greater wear resistance.