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Unibor | Annular Hole Cutter 43mm Short | CC43S

R 469.00


  • Annular Cutters: Diameter 34mm-49mm (Short cutters: 30mm; Long cutters: 60mm)
  • One way to avoid dimpling and deburring while making holes in tube and pipe is to use annular cutters
  • Because annular cutters are hollow on the inside, there is no dead-zone resistance to overcome
  • Using a twist drill to make holes in pipe or tubing can prompt concerns about the hole roundness, location accuracy, hole finish, chip extraction, burrs, and drilling duration
  • The focal point of these concerns is the twist drill's most noticeable feature; its point
  • This is not really a point at all, but the tangent line where two cutting angles intersect at the web of the drill, or the so-called "dead zone"
  • This dead zone causes the surface speed of the cutting edges to drop to zero
  • The lower surface speed reduces cutting efficiency and requires increased thrust, or feed pressure, for the cutting edges to push through the material
  • Compared to traditional tooling (twist drills, etc.) annular cutters can multiply your cutting speed by up to 3 times while getting a longer tool life, a more accurate hole, a better finish, with no burrs
  • The cutting edges distribute the cutting load evenly, thus making it faster cutting
  • Annular cutters convert a smaller area to chips, requiring less horsepower and thrust
  • This feature provides longer tool life and less chatter
  • The slug also offers a higher scrap value than loose chips and shavings