Sealed Journal Bearing Steel Tooth Tricone Bit Brochure

Hard, abrasive formations requiring maximum resistance to gage wear are best drilled with the TR1H bit. This bit provides the necessary chipping and crushing action on bottom and drills efficiently in formations such as siliceous limestone, dolomite, sandstone, and granite. The gage surfaces of the cones have webs joining adjacent heel teeth, which insures great resistance to wear. Inner row teeth are short and closely spaced to withstand maximum stress. This bit is designed to drill most efficiently in hard formations with weights ranging from 3,000 to 8,000 pounds per inch of bit diameter. Rotary speeds should decrease from 100 to 40 RPM as weight in increased.