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Reamers & Countersinks


We offer a comprehensive range of Dormer branded hand and machine reamers to support production of dimensionally accurate holes up to H7 tolerance.

Our reamers are classified into 3 main types:

  • Solid: available in two shank types – straight (cylindrical) and Morse Taper
  • Shell: for use on arbors
  • Expanding: with adjustable HSS blades and used for light work


    The most common types of reamers have a left-hand spiral due to the cutting forces involved and low depths of cut. This is a proven geometry to provide a high quality surface finish and hole accuracy.

    Straight flute reamers are also available for hard and abrasive workpiece materials.

    In addition, we manufacture a range of Countersinks for chamfering and countersinking holes. Dormer’s countersink range includes a variety of substrates, coatings and shank options to suit the majority of applications:
  • Material: High Speed Steel (HSS), High Speed Cobalt (HSS-E/HSCo) and Solid Carbide (HM).
  • Surface Treatments: Bright, TiN, TiAlN & AlTiCN
  • Cutting Angles: 60°, 82°, 90° & 100°
  • Shank Styles: straight, morse taper and double ended

    We also offer conical drills and counterbores.

    Dormer’s Reamer and Countersink ranges are identified by the following product codes:

B*** (HSS, HSS-E & Solid Carbide Reamers)

G*** (HSS, HSS-E & Solid Carbide Countersinks)


Below you can find some highlights from our reaming & countersinking program. For more information or to view our complete range, please download the Dormer catalog

 

​ReamersCountersinks


 


For pricing and availability please visit the Dormer Pramet eShop or contact your local sales office

 

 
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