Drillco 1000EC220 1-5/16

Description

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. 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. Jobber length twist drill bits, the most common length of twist drill bit, offer a good compromise of length and reach for the widest range of materials and applications. Mechanic's length twist drill bits (also called maintenance length) are a little shorter than jobber length and less prone to deflection when drilling. 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 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 round, twisted shaft of the twist drill bit typically has two cutting edges and flutes. Drill bits come in a variety of lengths and types, the most common of which is the twist drill bit. 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.

Key Features

• The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges.
• 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 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 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.
• 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.