Reamer bits, also known simply as reamers, are precision, multi-fluted rotary cutting tools designed to enlarge and finish drilled holes to precise dimensions. These bits remove a minimal amount of material and refine the hole’s size, alignments, and roundness. Reamers—unlike drill bits, which create holes—don’t create new holes but enlarge and smooth existing ones. These drilling tools consist of a shank, longitudinal flutes (either straight or helical), and often a pilot at the front for precise alignment. Additionally, a reamer drill bit comes in various sizes and is typically made from HSS (high-speed steel), ensuring long-lasting and precise hole finishing.
Why Buy a Reamer Bit?
Purchasing a reamer bit is essential for several reasons. While drilling creates a hole, it often leaves behind a rough surface and can deviate slightly from the desired size. Reamers rectify these imperfections, producing holes with superior dimensional accuracy and a smoother internal surface. Investing in quality reamer drill bits ensures longer tool life, consistent performance, and precision, making them invaluable in industries such as engineering, automotive, and aerospace.
View Our Best-in-Class Reamer Drill Bits:
Reamer bits are available in various types, including taper pin reamers, bridge reamers, adjustable reamers, and deburring reamers. Our machine and manual (hand) reamers are available in multiple forms based on their flute types. Our offerings include:
- Straight Reamer Bits – A straight reamer bit features a straight flute and cutting edges running parallel to the reamer’s axis. These bits produce consistent hole diameters without spiralling. Straight reamers are ideal for general-purpose reaming in various materials like brass, plastic, and soft materials.
- Spiral Reamer Bits – Spiral reamers (also called helical reamers) have spiral flutes similar to a twist drill. They are particularly effective for reaming blind holes or interrupted cuts, producing high-quality surface finishes in even the toughest materials.
- Tapered Reamer Bits – These bits are designed to create or enlarge holes with a specific taper. They are used to prepare holes for tapered pins or bolts. A Morse taper reamer bit is an example, while Brown & Sharpe and Jarno are also available.
Typical Uses of Reamer Bits:
Reamer bits, in the category of drill bits and parts, are indispensable in various industries and applications, including:
- Fitting Bearings and Bushings
- Creating Holes for Dowel Pins
- Finishing Holes for Fasteners
- Valve Seat Machining
- Automotive and Aerospace
- Hydraulic and Pneumatic Systems
- Tool and Die Making
- Deburring and Chamfering
- Repair and Maintenance.
