drilling bit

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Noun1.drilling bit - a bit used in drilling for oildrilling bit - a bit used in drilling for oil  
bit - the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press; "he looked around for the right size bit"
core bit - a hollow drilling bit that is the cutting part of a core drill; allows core samples to be taken
blade bit, fishtail bit - a drilling bit with cutting edges usually hardened against wear
rock bit, roller bit - a drill bit that has hardened rotating rollers
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Two years later, Atlas Copco sought to improve its diamond products business and bought Hobic Bit Industries, which is a major Canadian core drilling bit producer with in-roads into China.
Unlike conventional rotary drills, the device can core even the hardest rocks, such as granite and basalt, without significant weight applied to the drilling bit. The current demo unit weighs roughly 0.7 kilograms, which is sufficient to bore 12-millimeter holes in granite using less than 10 watts of power.
Since the process of drilling exposes water from the drilling fluid to reduced iron filings from the drilling bit, "some of the hydrogen and quite possibly some of the methane as well are forming as an artifact of the drilling,' says Valley.