IADC CODE 1-1-1
Non-sealed ball and roller bearing
FORMATION
Very soft with low compressive strength and high drillability(soft shales, Clays, unconsolidated sands, red beds, salts).
CUTTING STRUCTURE
The TO11 features long widely spaced teeth for cast ROP. The TO bit is fully barefaced for high rotary speed, aggressive gouging and scraping actions. It is designed for the softest formations and incorporates large cone offset and deep inter mesh teeth.