Drillco 1000EC220 1-5/16

Description

Short length twist drill bits (also called stub or screw-machine length) are the shortest and stiffest twist drill bits, helping to reduce the chance of deflection or breakage when drilling. Long length twist drill bits (also called taper length) are a little longer than jobber length, allowing for deeper holes and longer reach. Extra-long length twist drill bits (also called extension) are longer than long length twist drill bits for greater reach or for drilling deeper holes.Drillco manufactures cutting tools such as drill bits, reamers, taps, dies, annular cutters, end mills, and. Reduced shank twist drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with a 1/4", 1/2", or 3/4" drill chuck to create large holes. The self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips that reduce clogging compared to a 118-degree point. The round shank with flats ground onto three sides reduces slippage of the bit when used in drill chucks. The reduced shank drill bit, also called a Silver and Deming drill bit, has a shank that is smaller in diameter than its shaft, permitting drilling with a 1/2" drill chuck. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. The bronze finish lubricates the drill bit and provides wear resistance.

Key Features

• The reduced shank drill bit, also called a Silver and Deming drill bit, has a shank that is smaller in diameter than its shaft, permitting drilling with a 1/2" drill chuck.
• The bronze finish lubricates the drill bit and provides wear resistance.
• The self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips that reduce clogging compared to a 118-degree point.
• Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures.
• The Drillco 1000EC series reduced-shank drill bit is made from cobalt steel with a bronze finish and has a 135-degree split point for use on tough, high-tensile strength metals.
• The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges.