11”mining tricone bit IADC 745USED FOR limstone ,sandstone dolomite and copper ore
Ovoid insert on gauge ,the bullet shaped on inner rows and nose rows
Designed for hard and semi-ambrasive formations with high compressive strengths , such as hard shale sandstone , limestone ,dolomite hert and copper ore
Application 46000-56000psi 317-386mpa
Iadc code 745/742
Bearing type:roller-ball-roller-thrust button.sealed bearing
Circulation type:jet air
inner rows the bullet shaped gauge and nose rows
Pin connection 6 5/8”
Metric bit diameter 279mm
Weight 74kgs
Weight on bit 43000-66000
Rotary speed 60-90rpm
Air back pressure 0.2-0.4mpa
