Construction Reamers

Product Category

Learn More

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).

Cutting Tools
- Reamers
  - Bridge & Construction Reamers
    - Construction Reamers

Material Type

Learn More

High Speed Steel (HSS)

Steel

Finish

Learn More

Uncoated (Bright)

Shank Type

Learn More

Morse Taper

Round

Tool Flute Type

Learn More

Tool Flute Type
Flute
Type

Conventional spiral flutes can be used for drilling holes in a wide range of materials. Drill bits with conventional spiral flutes are used in a clockwise direction, which may also be called right-hand or right-handed. The helix angle ranges from 28 to 32 degrees.

Fast spiral flutes have a higher helix angle than conventional spiral flutes, providing more efficient chip removal when drilling deep holes and when drilling materials that produce stringy chips, such as softer ferrous and non-ferrous materials. Drill bits with fast spiral flutes are used in a clockwise direction. The helix angle ranges from 35 to 45 degrees.

Half round flutes have a straight cutting edge with no turns or twist in the flutes. The single flute results by removing half the body of the drill bit along its central axis, creating a half round appearance when viewed from the tip. Half round flutes are typically used in horizontal applications such as drilling on a lathe, because gravity will aid in pulling the chips out of the hole as it is being drilled. Drill bits with half round flutes are used in a clockwise direction. The helix angle is zero degrees.

Left-hand fast spiral flutes have helical twists in the opposite direction and a higher helix angle than conventional spiral flutes, providing more efficient chip removal when drilling deep holes and when drilling materials that produce stringy chips, such as softer ferrous and non-ferrous materials. Drill bits with left-hand fast spiral flutes are used in a counterclockwise direction. The helix angle ranges from 35 to 45 degrees.

Left-hand spiral flutes have helical twists in the opposite direction than conventional spiral flutes and can be used for drilling holes in a wide range of materials. Drill bits with left-hand spiral flutes are used in a counterclockwise direction. Left-handed spirals are commonly used with a reversible drill to assist with removal of broken fasteners. They can also be used in multiple spindle gear-driven drilling heads or screw machines. The helix angle ranges from 28 to 32 degrees.

Parabolic spiral flutes have larger flutes than a fast spiral, providing increased space for efficient chip removal when drilling deep holes in a wide range of materials. Drill bits with parabolic spiral flutes are used in a clockwise direction. The helix angle ranges from 35 to 45 degrees.

Slow spiral flutes have a lower helix angle than conventional spiral flutes. Slow spiral flutes provide efficient chip removal with high feed rates for shallow holes and in short-chipping materials such as brass, bronze, and cast iron. Drill bits with slow spiral flutes are used in a clockwise direction. The helix angle ranges from 10 to 20 degrees.

Straight flutes have straight cutting edges with no twists in the flutes, providing efficient chip removal in materials that produce short chips such as in brass, other non-ferrous materials, and cast iron. Straight flutes, commonly used for horizontal drilling applications, prevent the drill bit from drawing or pulling itself into the material while drilling. Drill bits with straight flutes are used in a clockwise direction. The helix angle is zero degrees.

Conventional Spiral
Fast Spiral

Half Round
Left Hand Fast Spiral
Left Hand Spiral
Parabolic Spiral

Slow Spiral

Straight

Number of Flutes

Learn More

Number of FlutesThe more flutes on the reamer, the less space for chips and the faster the feed. Reamers with more flutes are also more rigid.

International Shipping

Ships Internationally

Amazon Prime Eligibility

Prime

Brand

Sorry, no matches found for the brand you entered. Please check your spelling, or clear your selections, and try again.

Alvord Polk
Chicago Latrobe
Union Butterfield

Showing 91 results in 23 families

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 11/16 Inch

Alvord Polk 650-S-03 High-Speed Steel Construction Taper Reamer Set, Helical Flute, Round Shank with Taper Shank Adapter, Uncoated Finish, 4-Piece (1/2 Inch, 5/8 Inch, 3/4 Inch, 1 Inch) in Wood Case

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #1 Morse Taper Shank, Uncoated (Bright) Finish, Size 3/8 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #2 Morse Taper Shank, Uncoated (Bright) Finish, Size 7/16 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #2 Morse Taper Shank, Uncoated (Bright) Finish, Size 1/2 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 1-1/16 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 13/16 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 7/8 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 15/16 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 1 Inch

Alvord Polk 650-H High-Speed Steel Construction Reamer, Left Hand Spiral Flute, Round Shank, Uncoated (Bright)

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 1-1/8 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #4 Morse Taper Shank, Uncoated (Bright) Finish, Size 1-1/4 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #4 Morse Taper Shank, Uncoated (Bright) Finish, Size 1-3/8 Inch

Alvord Polk 655-H High-Speed Steel Construction Reamer, Left Hand Spiral Flute, Taper Shank, Uncoated (Bright)

Union Butterfield 4579 High-Speed Steel Construction Reamer, Right Hand Spiral Flute, Morse Taper Shank, Uncoated (Bright) Finish

Chicago Latrobe 345 High-Speed Steel Reduced Shank Car Reamer, Left-Hand Spiral Flute, Straight Shank, Uncoated (Bright) Finish with Black Oxide Flutes

Chicago Latrobe 340 High-Speed Steel Construction Reamer, Left Hand Fast Helix Flute, Taper Shank, Black Oxide Finish

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #2 Morse Taper Shank, Uncoated (Bright) Finish, Size 5/8 Inch

Alvord Polk 627-2 High-Speed Steel Bridge Reamer, Left Hand Spiral Flute, #3 Morse Taper Shank, Uncoated (Bright) Finish, Size 3/4 Inch