6 1/8 in R716(155.575 mm)

Product ID: 66850A0101 ER 26957

Design Specifications

Total Cutters39
Rolling Cutter Count11
Cutter Size16mm (5/8 in)
Face Cutters(19) 16mm
Gauge Cutters(7) 16mm
Cone Cutters(4) 16mm
Back-Up Cutters(9) 16mm
Blade Count7
Nozzles7 Standard 10 Fixed Port
Bit Connection3 1/2 Reg
Junk Slot Area, in24.342
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 8.22 Overall: 11.907
Fishing NeckDiameter: 4.5 Length: 2.989

Operating Parameters

Bit SpeedSuitable for Rotary & PDM
Weight-on-Bit2,500 To 22,000 (lbs)
1,136 To 9,999 (daN)
1 To 10 (Tonnes)
Flow Rate galUs/min125 To 250
Hydraulic Horsepower, HSI1 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 ONYX 360 rolling cutter feature allows the PDC element to rotate enabling the full circumference of the diamond edge to be utilized. This prevents a wear flat developing in only one place thereby maintaining cutter sharpness for improved drillbit durability.

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.

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.