ICS Cutting Tools - core drills

CORE DRILLS

Core drills are designed to enlarge previously drilled, cored, or punched holes 75% of the tool diameter. They have a 30° relieved chamfer nose suitable for drilling rough cores. Three and four flute core drills have better hole size than two flute drills and produce a very good surface finish (although not to the standard produced by a reamer.) Note: Core drills cannot drill an original hole.

Core Drill - Three Flute: Three-flute core drills have more chip clearing than four-flute core drills. They are used for deep holes and for holes requiring substantial enlarging.
Core Drill - Four Flute: Four-flute core drills have a better surface finish than three-flute core drills and can be run at higher metal removal rates. They are used for holes requiring light to medium enlarging. Most users find them easier to re-sharpen and measure.
CORE DRILLS - REGULAR MT SHANK
Core Drill - Three Flute: Three-flute core drills have more chip clearing than four-flute core drills. They are used for deep holes and for holes requiring substantial enlarging.
Core Drill - Four Flute: Four-flute core drills have a better surface finish than three-flute core drills and can be run at higher metal removal rates. They are used for holes requiring light to medium enlarging. Most users find them easier to re-sharpen and measure.

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CORE DRILLS - STRAIGHT SHANK

CORE DRILLS - REGULAR MT SHANK