Tricone bit
FA537GT , TCI Tricone Bit , Sealed Journal Bearing , With Gage Protection. FA447G , TCI Tricone Bit , Rock Bit , Sealed Journal Bearing With Gauge Protection , Tricone Bit. FA517GT , TCI Tricone Bit , IADC 5, Rubber Sealed Journal Bearing. Throop Rock Bit designed TCI tricones are precision, high-value bits that produces consistent, lowest-cost-per-foot-drilled. We offer a wide variety of chisel, conical and spherical shaped tungsten carbide inserts, each uniquely designed for drilling in specific types of rock formations. Available in all circulation types. Left In The Hole Bits The bearings are what make the cones on a Tricone spin. There are four common types of bearings - standard open roller bearings, air-cooled roller bearings, sealed roller bearings, and sealed journal (friction) bearings. Tricone bit s consist of three “cones” which must all rotate on lubricated bearings. This lubrication in turn requires a grease reservoir and for any medium or large s...