Wholesale mining well tricone drilling bits with discounted price from China factory.
Bit Description:
IADC:742-TCI sealed roller bearing bit with gauge protection for extremely hard and abrasive formations.
Compressive Strength:
100-150 MPA
14,500-23,000 PSI
Ground Description:
Hard, well-compacted rocks such as :hard silica limestones,quarzite streaks,pyrite ores,hematite ores,magnetite ores,chromium ores,phosphorite ores,and granites.
We can offer mining tricone rock drill bits in a variety of sizes and most of IADC Codes.
CUTTING STRUCTURE:
Ovoid on gage,ogive and ovoid on inner rows.
Designed for hard and abrasive formations with high compressive strengths such as granite,limestone,sandy sandstone,dolomite and chert.
Applicaiton:46,000-56,000
SHIRTTAIL PROECTION:
Hardmetal and wear resistant carbide on shirttail lip and lug.
PRODUCT SPECIFICATION:
IADC Code:742
Bearing Type:Roller-Ball-Roller-Thrust
Button/Open Bearing
Circulation Type:Jet Air
Cutting Structure:
Inner and Nose Rows:Ogive and ovoid.
Gage Rows:Ovoid
Gage Bevel Protection:Round
Pin Connection:6 5/8" API
Metric Bit Dia:311mm
OPERATING SUGGESTIONS
Weight on Bit:49,000-85,750lbs
Rotary Speed:90-60RPM
Air Back Pressure:0.2-0.4MPa