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HPR Drill - new

High-speed, high-feed drilling up to 8xD, with standard through coolant supply.

Patented corner radius enabling long tool life, excellent hole quality, while avoiding workpiece chipping during exits.

Patented HPR point thinning providing excellent self-centring capabilities with low thrust, enabling excellent hole straightness.

4 margin lands ideal for cross holes and inclined exits, proving maximum stability.

Ultra-High polished flutes providing minimum friction, improving chip evacuation and tool life.

MQL-ready!  All shanks fulfil the DIN 6535 and 69090-03 requirements for minimum quantity lubrication.

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Workpiece Material
Workpiece Material
  • P Steel (460)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (460)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (460)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS
      (460)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS
      (460)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS
      (460)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS
      (460)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS
      (460)
  • K Cast Iron (460)
    • K1
      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS
      (460)
    • K2
      Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS
      (460)
    • K3
      High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS
      (460)
Applications
Applications
  • Cross Hole Drilling Cross Hole Drilling (460)
  • Drilling Drilling (460)
  • Inclined Exit Drilling Inclined Exit Drilling (460)
  • Stacked Plates Drilling Stacked Plates Drilling (460)
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ORIGINAL PRODUCT

Solid Carbide Drills

HPR • B256 • 8 x D • Internal Coolant
(84 Products)
  • DrillingDrilling
  • Drilling: Inclined ExitDrilling: Inclined Exit
  • Drilling: Stacked PlatesDrilling: Stacked Plates
  • Drilling: Cross-Hole DrillingDrilling: Cross-Hole Drilling
View Products
SAP Material Number ISO Catalog Number ANSI Catalog Number Grade [D1] Drill Diameter M [D1] Drill Diameter M [D1] Wire Size [L] Overall Length [L] Overall Length [L3] Flute Length [L3] Flute Length [L4] Maximum Drilling Depth [L4] Maximum Drilling Depth [L5] Drill Point Length [L5] Drill Point Length [LS] Shank Length [LS] Shank Length [D] Adapter / Shank / Bore Diameter [D] Adapter / Shank / Bore Diameter
6783346 B256A03264HPR B256A03264HPR KCK10A 3.2640 .1285 30 78.0000 3.070 40.0000 1.574 33.0000 1.299 0.9600 .0378 36.0 1.417 6.0 .2362
    List price:
    $215.27 /each.
    Your price::
    6783348 B256A03400HPR B256A03400HPR KCK10A 3.4000 .1339   78.0000 3.070 40.0000 1.574 33.0000 1.299 1.0000 .0394 36.0 1.417 6.0 .2362
      List price:
      $215.27 /each.
      Your price::
      6783369 B256A04300HPR B256A04300HPR KCK10A 4.3000 .1693   87.0000 3.425 49.0000 1.929 41.0000 1.614 1.2600 .0496 36.0 1.417 6.0 .2362
        List price:
        $215.27 /each.
        Your price::
        6783372 B256A04700HPR B256A04700HPR KCK10A 4.7000 .1850   87.0000 3.425 49.0000 1.929 41.0000 1.614 1.3800 .0543 36.0 1.417 6.0 .2362
          List price:
          $215.27 /each.
          Your price::
          6783373 B256A04763HPR B256A04763HPR KCK10A 4.7630 .1875   94.0000 3.700 56.0000 2.204 48.0000 1.889 1.4000 .0551 36.0 1.417 6.0 .2362
            List price:
            $215.27 /each.
            Your price::
            6783387 B256A06000HPR B256A06000HPR KCK10A 6.0000 .2362   94.0000 3.700 56.0000 2.204 48.0000 1.889 1.7600 .0693 36.0 1.417 6.0 .2362
              List price:
              $215.27 /each.
              Your price::