Reamer Type

  • Bridge and construction reamers describe two similar types of reamers. Both are tapered to allow the reamer to enter overlapping and misaligned holes where extremely precise tolerances are not necessary, but construction reamers are generally shorter and have a stop collar for safety and depth control, while bridge reamers tend to be longer and have a tapered shank.
  • Chucking reamers, also known as machine reamers, have a 45-degree bevel lead and cut only on that lead, and a round shank that cannot be used with a wrench, i.e. driven by hand. Chucking reamers are the most commonly used type of reamer. They are used in drill presses, turret lathes, screw machines, and other machine tools. "CNC length chucking reamers" have a shorter overall length than "chucking reamers," and are intended to be used at higher speeds with less vibration than a longer tool.
  • Hand reamers have a long taper lead to compensate for the difficulty of manually starting a hole. Unlike chucking reamers, hand reamers cut on the bevel lead and the taper lead. An adjustable wrench or straight-handle tap wrench is the best tool to use with these reamers.
  • Taper pin reamers are designed to ream tapered holes designed to fit standard taper pins. They are used with both hand and machine tools.
  • Taper pipe reamers are intended for reaming holes that meet the standard for pipes and holes that will be tapped with American National Standard Taper Pipe (NPT).