8 1/2”mining tricone bit IADC 832USED FOR limestone ,sandstone dolomite and chert

8 1/2”mining tricone bit IADC 835USED FOR limestone ,sandstone dolomite and chert

Cutting structure gauge rows and inner rows are ovoid type

Designed for hard and abrasive formation with high compressive strengths such as granite, limestone ,sandy sandstone dolomite and chert

Application 43000-52000psi

Product specification

IADC CODE 835/832

Bearing type:roller-ball-roller-thrust button/sealed bearing/open bearing

Circulation type:jet air

Pin connection 4 1/2”API

Bit diameter 216mm(8 1/2)

Product weight 38kgs

Weight on bit 42500-680000lbs

Rotary speed 80-50rpm

Air back pressure 0.2-0.4mpa