core drill

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core drill

[′kȯr ‚dril]
(mechanical engineering)
A mechanism designed to rotate and to cause an annular-shaped rock-cutting bit to penetrate rock formations, produce cylindrical cores of the formations penetrated, and lift such cores to the surface, where they may be collected and examined.

core drill

A drill used to remove a sample of rock in situ, for determining bedrock profiles or for obtaining a core for testing; the sample is retained in the core barrel.
References in periodicals archive ?
This model S86F core bit made by the Security division of Dresser Industries is used to cut shales, limestones, and anhydrides.
This is a professional grade core bit, available in exact specifications and designed to be used in a variety of drilling jobs.
National Diamond is a leading US manufacturer & distributor of diamond saw blades, diamond core bits, loop blades, diamond cup wheels, diamond polishing pads, tuck point blades, turbo blades and other specialty diamond cutting and finishing tools from over 20 years.
Tenders are invited for Supply Of Low Spc Nq Diamond Core Bits
Tenders are invited for The T C Core Bits And Diamond Core Bits Are Required For Drilling Purpose
Tenders are invited for Rotary Hammer Specification: Rotary Hammer, Model: Gbh 2-22 Re, Drilling Dia In Steel-13 Mm , Core Bits Masonry-68 Mm, Power Output-620 W, No Load Speed-0 To 1000 Rpm, Single Impact Energy-2.
Tenders are invited for Procurement Of Diamond Core Bits, Reaming Shells And Casings
Limited Tenders are invited for Procurement Of Impregnated Self Sharpening Diamond Core Bits
Tenders are invited for Rotary Hammer, Model:Gbh 2-22 Re, Drilling Dia In Steel-13Mm And In Wood-30Mm, Core Bits Masonry-68Mm, Power Output-620 W, No Load Speed-0 To 1000 Rpm, Single Impact Energy-2.