6 1/8 in R516(155.575 mm)

Product ID: 66876A0001 ER 26974

Design Specifications

Total Cutters28
Rolling Cutter Count8
Cutter Size13mm (1/2 in), 16mm (5/8 in)
Face Cutters(6) 13mm, (12) 16mm
Gauge Cutters(5) 16mm
Cone Cutters(5) 13mm
Blade Count5
Nozzles5 Standard Series 50N
Bit Connection3 1/2 Reg
Junk Slot Area, in26.859
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 8.304 Overall: 11.991
Fishing NeckDiameter: 4.5 Length: 3.102

Operating Parameters

Bit SpeedSuitable for Rotary & PDM
Weight-on-Bit2,500 To 21,000 (lbs)
1,136 To 9,544 (daN)
1 To 9 (Tonnes)
Flow Rate galUs/min150 To 300
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 PX feature places thermally stable diamond inserts (TSP) on the gauge to maximize gauge retention and extend bit life.

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.