8 1/2 in GFK30PS(215.9 mm)

Product ID: 0062596010 ER 8510 IADC 537X

Design Specifications

Bearing TypeSpinodal* 2 Bearing w/Silver Plated Components
Seal TypeGemini Twin High Temperature Seal System
Bit Connection Type4 1/2 Reg
Journal Angle (┬░)32.5
Offset (inches)0.219
RowsTotal: 13 Inner: 10 Gage: 3
Inserts/TeethTotal: 131 Inner: 87 Gage: 44

Operating Parameters

Weight on Bit20,000 To 50,000 (lbs)
9,090 To 22,725 (daN)
9 To 22 (Tonnes)
Rotary Speed (RPM)250 To 50
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.



Advanced fabric composite seals and specialized high temperature grease designed with improved heat and wear resistance to enhance bit life at elevated temperatures.

The PS feature offers strategically placed clusters of semi-round top (SRT) shaped carbide inserts that maximize leg protection, prevent bit wear, and substantially increase bit life in abrasive formations.

Spinodal 2 bearing with silver plated components ensures longer runs at higher ROP. This proprietary material offers maximum wear resistance and withstands extreme load forces for longer periods than conventional bearing materials.

The Gemini twin seal system consists of a primary seal which protects the bearing, and a secondary seal that protects the primary seal. This dual seal system will perform reliably for extended periods of time in high RPM, heavier WOB, high mud weight and severe dogleg applications.