6 1/8 in MDSiR613(155.575 mm)

Product ID: 65894A0001 ER 26270

Design Specifications

Total Cutters45
Rolling Cutter Countn/a
Cutter Size13mm (1/2 in), 16mm (5/8 in)
Face Cutters(11) 13mm, (7) 16mm
Gauge Cutters(8) 13mm
Cone Cutters(7) 13mm
Back-Up Cutters(12) 13mm
Blade Count6
Nozzles3 Standard Series 50N, 3 Standard 15 Fixed Port
Bit Connection3 1/2 Reg
Junk Slot Area, in23.716
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 8.184 Overall: 11.871
Fishing NeckDiameter: 4.5 Length: 2.982

Operating Parameters

Bit SpeedSuitable for Rotary and PDM
Weight-on-Bit2,500 To 20,000 (lbs)
1,136 To 9,090 (daN)
1 To 9 (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.

The PX feature places thermally stable diamond inserts (TSP) on the gauge to maximize gauge retention and extend bit life.