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CTR — Senken
CTR — Senken
CTR — Senken
CTR — Senken

S2S Weldon Shank • Inch

CTR — Senken

Features and benefits

  • CTR Counterboring Tools are designed for high-production screw-head counterbores and similar counterboring operations.

  • Extremely unequal insert positioning and flutes.

  • S2 S inserts reduct additional drill operations to achieve a precise 90° bottom.

  • Counterboring tool shipped with insert screws and Torx wrench.

Uses and application

  • SenkenSenken
  • Zylinderschaft –    WeldonZylinderschaft – Weldon
  • Außenkühlung: BohrenAußenkühlung: Bohren
  • Schneidreihen: 2Schneidreihen: 2
  • Schneidreihen: 3Schneidreihen: 3

Workpiece Materials

P Steel
M Stainless Steel
K Cast Iron
N Non-Ferrous
S High-Temp Alloys
H Hardened Materials
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Workpiece Material
Workpiece Material
  • P Steel (5)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (5)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (5)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS
      (5)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS
      (5)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS
      (5)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS
      (5)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS
      (5)
  • M Stainless Steel (5)
    • M1
      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS
      (5)
    • M2
      High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS
      (5)
    • M3
      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS
      (5)
  • K Cast Iron (5)
    • K1
      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS
      (5)
    • K2
      Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS
      (5)
    • K3
      High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS
      (5)
  • N Non-Ferrous Materials (5)
    • N1
      Wrought Aluminum
      (5)
    • N2
      Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%
      (5)
    • N3
      High-Silicon Aluminum Alloys Si >12.2%
      (5)
    • N4
      Copper, Brass, Zinc-based on machinability index range of 70-100
      (5)
    • N5
      Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass
      (5)
    • N6
      Carbon, Graphite Composites, CFRP
      (5)
    • N7
      MMC's
      (5)
  • S High-Temp Alloys (5)
    • S1
      Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS
      (5)
    • S2
      Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS
      (5)
    • S3
      Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS
      (5)
    • S4
      Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS
      (5)
  • H Hardened Materials (5)
    • H1
      Hardened Materials 44-48 HRC
      (5)
    • H2
      Hardened Materials 48-55 HRC
      (5)
    • H3
      Hardened Materials 56-60 HRC
      (5)
    • H4
      Hardened Materials >60 HRC
      (5)
Applications
Applications
  • Counterboring Counterboring (5)
  • Drilling Drilling (5)
Cutting Diameter
Cutting Diameter
  • 0.8125 in (1)
  • 1.0 in (1)
  • 1.1875 in (1)
  • 1.625 in (1)
  • 2.0 in (1)
Cutting Diameter Min to Cutting Diameter Max
Cutting Diameter
Cutting Diameter
  • 20.637 mm (1)
  • 25.4 mm (1)
  • 30.162 mm (1)
  • 41.275 mm (1)
  • 50.8 mm (1)
Cutting Diameter Min to Cutting Diameter Max
Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
  • 12.7 mm (1)
  • 15.875 mm (1)
  • 19.05 mm (1)
  • 25.4 mm (1)
  • 31.75 mm (1)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
  • 0.5 in (1)
  • 0.625 in (1)
  • 0.75 in (1)
  • 1.0 in (1)
  • 1.25 in (1)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
Number of Flutes
Number of Flutes
  • 2 (1)
  • 3 (4)
Cutting Edges Per Insert
Cutting Edges Per Insert
  • 2.0 (5)
  • 4.0 (3)
Cutting Edges Per Insert Min to Cutting Edges Per Insert Max
application
Drilling Condition
Drilling Condition
  • Interrupted (5)
  • Smooth Cut (2)
  • Stable (5)
  • Unstable (5)
  • Varying Depth of Cut (2)
Grade Of Cutting Tool
Grade Of Cutting Tool
  • CD4 (5)
  • CM4 (5)
  • CS5 (5)
  • KC7140 (5)
  • KC7210 (5)
  • KC7215 (5)
  • KCPK10 (5)
  • KCS10B (2)
  • KCU25 (5)
  • KCU40 (5)
  • KM1 (5)
backEnd
Back-End Diameter
Back-End Diameter
  • 19.05 mm (2)
  • 25.4 mm (2)
  • 31.75 mm (1)
Back-End Diameter Min to Back-End Diameter Max
Back-End Diameter
Back-End Diameter
  • 0.75 in (2)
  • 1.0 in (2)
  • 1.25 in (1)
Back-End Diameter Min to Back-End Diameter Max
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SAP Material Number ISO Catalog Number ANSI Catalog Number [D1] Drill Diameter M [D1] Drill Diameter M Drill Diameter Tol. Min Drill Diameter Tol. Min Drill Diameter Tol. Max Drill Diameter Tol. Max [D] Adapter / Shank / Bore Diameter [D] Adapter / Shank / Bore Diameter Pre Machined Hole Diameter [D6] Pre Machined Hole Diameter [D6] [L] Overall Length [L] Overall Length [L4] Maximum Drilling Depth [L4] Maximum Drilling Depth [LS] Shank Length [LS] Shank Length Gage Insert Number of Insert Cutting Diameter 1
1992509 CBT0813RW075N3 CBT0813RW075N3 20.6370 .8125 -0.150000 -0.006 0.150000 .0060 19.05 .75 13.4870 .5312 88.9100 3.500 12.7000 .5000 52.0 2.047 SPHX060204R.. 3
    List price:
    $257.38 /each.
    Your price::
    Qty
    1992511 CBT1000RW075N2 CBT1000RW075N2 25.4000 1.000 -0.150000 -0.006 0.150000 .0060 19.05 .75 16.6620 .6562 88.9100 3.500 15.8750 .6250 52.0 2.047 SPHX090304R.. 2
      List price:
      $279.37 /each.
      Your price::
      Qty
      1992583 CBT1188RW100N3 CBT1188RW100N3 30.1620 1.187 -0.150000 -0.006 0.150000 .0060 25.4 1.0 19.8370 .7812 101.6100 4.000 19.0500 .7500 58.4 2.299 SPHX090304R.. 3
        List price:
        $313.93 /each.
        Your price::
        Qty
        1992698 CBT1625RW100N3 CBT1625RW100N3 41.2750 1.625 -0.150000 -0.006 0.150000 .0060 25.4 1.0 26.1870 1.061 114.3100 4.500 25.4000 1.000 58.4 2.299 SPHX120404R.. 3
          List price:
          $385.71 /each.
          Your price::
          Qty
          1992702 CBT2000RW125N3 CBT2000RW125N3 50.8000 2.000 -0.150000 -0.006 0.150000 .0060 31.75 1.25 33.3500 1.312 114.3100 4.500 31.7500 1.250 58.4 2.299 SPHX120404R.. 3
            List price:
            $521.30 /each.
            Your price::
            Qty
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            Discount: %
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