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CUTTING STRUCTURE |
Spherical on gage, double spherical on inner rows. Designed for high compressive strength, hard and abrasive formations, such as granite, limestone, sandstone, dolomite. Compressive strength: 46,000-56,000 psi/317-386 MPa |
SHIRTTAIL PROTECTION |
Hard metal and wear resistant carbide on shirttail lip and lug. |
PRODUCT SPECIFICATION |
IADC Code: 745 |
Bearing Type: Roller-Ball-Roller-Thrust Button/Sealed Bearing |
Circulation Type: Jet Air |
Cutting Structure: |
Inner and Nose Rows: Double spherical |
Gage Rows: Spherical |
Gage Bevel Protection: Ovoid |
Pin Connection: 6 5/8″ API REG |
Metric Bit Diameter: 311 mm |
Product Weight: 215 lbs/98 kg |
OPERATING SUGGESTIONS |
Weight on Bit: 27.3T / 60,186 lbs MAX |
Rotational Speed: 60-90 rpm |
Air Back Pressure: 29-58 psi/0.2-0.4 MPa |
The metal index of electric vehicles finds that electric vehicles are popular in China and European and American markets by tracking the rebound of the
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