8 3/8 in MSiZ619(212.725 mm)

Product ID: 65779A0101 ER 26116

Design Specifications

Total Cutters37
Cutter Size19mm (3/4 in)
Face Cutters(21) 19mm
Gauge Cutters(6) 19mm
Cone Cutters(3) 19mm
Back-Up Cutters(7) 19mm
Blade Count6
Nozzles3 Standard Series 50N, 3 Standard Series 60N
Bit Connection4 1/2 Reg
Junk Slot Area, in210.561
GaugeLength: 6" Protection: Options Available
LengthMake-Up: 13.192 Overall: 17.38
Fishing NeckDiameter: 6 Length: 3.69

Operating Parameters

Bit SpeedSuitable for PDM and Rotary
Weight-on-Bit5,000 To 35,000 (lbs)
2,272 To 15,908 (daN)
2 To 16 (Tonnes)
Flow Rate galUs/min400 To 700
Hydraulic Horsepower, HSI1 To 6
Recommended Make-up Torque16,600 To 21,600 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.

Optional anti-balling metallic coating electrochemically applied to the surface of the bit body which reduces the surface roughness and friction. This greatly helps to prevent cuttings from sticking and reduces the likelihood of bit balling.