11”mining tricone bit IADC 745USED FOR limstone ,sandstone dolomite and copper ore

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