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CTR™ • Counterbore
CTR™ • Counterbore
CTR™ • Counterbore
CTR™ • Counterbore

S2S Whistle Notch WN Shank • Metric

CTR™ • Counterbore

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 reduce additional drill operations to achieve a precise 90° bottom.

  • Counterboring tool shipped with insert screws and Torx wrench.

Uses and application

  • Counter BoringCounter Boring
  • Shank - Cylindrical Whistle Notch™Shank - Cylindrical Whistle Notch™
  • Coolant - Through CoolantCoolant - Through Coolant
  • Flute Configuration: 2Flute Configuration: 2
  • Flute Configuration: 3Flute Configuration: 3

Workpiece Materials

P Steel
M Stainless Steel
K Cast Iron
N Non-Ferrous
S High-Temp Alloys
H Hardened Materials
CTR™ • Counterbore
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  • P Steel (30)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (30)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (30)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS
      (30)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS
      (30)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS
      (30)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS
      (30)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS
      (30)
  • M Stainless Steel (30)
    • M1
      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS
      (30)
    • M2
      High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS
      (30)
    • M3
      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS
      (30)
  • K Cast Iron (30)
    • K1
      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS
      (30)
    • K2
      Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS
      (30)
    • K3
      High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS
      (30)
  • N Non-Ferrous Materials (30)
    • N1
      Wrought Aluminum
      (30)
    • N2
      Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%
      (30)
    • N3
      High-Silicon Aluminum Alloys Si >12.2%
      (30)
    • N4
      Copper, Brass, Zinc-based on machinability index range of 70-100
      (30)
    • N5
      Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass
      (30)
    • N6
      Carbon, Graphite Composites, CFRP
      (30)
    • N7
      MMC's
      (30)
  • S High-Temp Alloys (30)
    • S1
      Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS
      (30)
    • S2
      Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS
      (30)
    • S3
      Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS
      (30)
    • S4
      Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS
      (30)
  • H Hardened Materials (30)
    • H1
      Hardened Materials 44-48 HRC
      (30)
    • H2
      Hardened Materials 48-55 HRC
      (30)
    • H3
      Hardened Materials 56-60 HRC
      (30)
    • H4
      Hardened Materials >60 HRC
      (30)
Applications
Applications
  • Counterboring Counterboring (30)
  • Drilling Drilling (30)
Cutting Diameter
Cutting Diameter
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  • 0.635 in (1)
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  • 0.794 in (2)
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  • 0.991 in (2)
  • 1.031 in (1)
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Cutting Diameter Min to Cutting Diameter Max
Cutting Diameter
Cutting Diameter
  • 15.125 mm (1)
  • 16.125 mm (1)
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  • 18.125 mm (2)
  • 20.175 mm (2)
  • 21.175 mm (2)
  • 22.175 mm (2)
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  • 25.175 mm (2)
  • 26.175 mm (1)
  • 27.175 mm (1)
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  • 32.2 mm (1)
  • 33.2 mm (1)
  • 34.2 mm (1)
  • 35.2 mm (1)
  • 36.2 mm (1)
  • 38.2 mm (1)
  • 40.2 mm (1)
  • 42.2 mm (1)
  • 46.2 mm (1)
Cutting Diameter Min to Cutting Diameter Max
Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
  • 8.5 mm (2)
  • 11.0 mm (1)
  • 13.5 mm (3)
  • 16.0 mm (7)
  • 18.5 mm (1)
  • 21.0 mm (3)
  • 23.0 mm (2)
  • 23.5 mm (3)
  • 25.5 mm (3)
  • 27.5 mm (1)
  • 30.0 mm (1)
  • 30.5 mm (1)
  • 33.5 mm (2)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
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  • 0.63 in (7)
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  • 1.083 in (1)
  • 1.181 in (1)
  • 1.201 in (1)
  • 1.319 in (2)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
Number of Flutes
Number of Flutes
  • 2 (11)
  • 3 (19)
Cutting Edges Per Insert
Cutting Edges Per Insert
  • 2.0 (30)
  • 4.0 (14)
Cutting Edges Per Insert Min to Cutting Edges Per Insert Max
Application
Drilling Condition
Drilling Condition
  • Interrupted (30)
  • Stable (30)
  • Unstable (30)
Grade Of Cutting Tool
Grade Of Cutting Tool
  • CD4 (30)
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  • KC7140 (30)
  • KC720 (7)
  • KC7210 (30)
  • KC7215 (30)
  • KC7815 (7)
  • KCPK10 (30)
  • KCU25 (30)
  • KCU40 (30)
  • KM1 (30)
Back-End
Back-End Diameter
Back-End Diameter
  • 20.0 mm (23)
  • 32.0 mm (7)
Back-End Diameter Min to Back-End Diameter Max
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  • 0.787 in (23)
  • 1.26 in (7)
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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 [L2] Head Length [L2] Head Length [L4] Maximum Drilling Depth [L4] Maximum Drilling Depth Gage Insert Number of Insert Cutting Diameter 1
2204393 CBTF150R2WD20N2M CBTF150R2WD20N2M 15.1350 .5959 -0.120000 -0.004 0.120000 .0047 20.0 .7874 6.0000 .2362 81.0000 3.189 31.0000 1.220 8.5000 .3346 SPHX060204R.. 2
    List price:
    C$360.89 /each
    Your price:
    2204394 CBTF160R2WD20N2M CBTF160R2WD20N2M 16.1350 .6352 -0.120000 -0.004 0.120000 .0047 20.0 .7874 7.0000 .2756 81.0000 3.189 31.0000 1.220 8.5000 .3346 SPHX060204R.. 2
      List price:
      C$366.68 /each
      Your price:
      2204395 CBTF170R2WD20N2M CBTF170R2WD20N2M 17.1350 .6746 -0.120000 -0.004 0.120000 .0047 20.0 .7874 8.0000 .3150 86.0000 3.385 36.0000 1.417 13.5000 .5315 SPHX060204R.. 2
        List price:
        C$372.47 /each
        Your price:
        2204405 CBTF180R2WD20N2M CBTF180R2WD20N2M 18.1350 .7140 -0.120000 -0.004 0.120000 .0047 20.0 .7874 8.4000 .3307 86.0000 3.385 36.0000 1.417 13.5000 .5315 SPHX070304R.. 2
          List price:
          C$378.25 /each
          Your price:
          1246170 CBTF180R2WD20N3M CBTF180R2WD20N3M 18.1350 .7140 -0.120000 -0.004 0.120000 .0047 20.0 .7874 8.4000 .3307 86.0000 3.385 36.0000 1.417 13.5000 .5315 SPHX060204R.. 3
            List price:
            C$403.35 /each
            Your price:
            2204396 CBTF200R2WD20N2M CBTF200R2WD20N2M 20.1650 .7939 -0.120000 -0.004 0.120000 .0047 20.0 .7874 8.5000 .3346 86.0000 3.385 36.0000 1.417 16.0000 .6299 SPHX070304R.. 2
              List price:
              C$389.83 /each
              Your price:
              1191074 CBTF200R2WD20N3M CBTF200R2WD20N3M 20.1650 .7940 -0.120000 -0.004 0.120000 .0047 20.0 .7874 8.5000 .3346 86.0000 3.385 36.0000 1.417 16.0000 .6299 SPHX060204R.. 3
                List price:
                C$424.68 /each
                Your price:
                2204397 CBTF210R2WD20N2M CBTF210R2WD20N2M 21.1650 .8333 -0.120000 -0.004 0.120000 .0047 20.0 .7874 8.5000 .3346 86.0000 3.385 36.0000 1.417 16.0000 .6299 SPHX070304R.. 2
                  List price:
                  C$399.84 /each
                  Your price:
                  2204398 CBTF210R2WD20N3M CBTF210R2WD20N3M 21.1650 .8333 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 86.0000 3.385 36.0000 1.417 11.0000 .4331 SPHX060204R.. 3
                    List price:
                    C$435.35 /each
                    Your price:
                    2204399 CBTF220R2WD20N2M CBTF220R2WD20N2M 22.1650 .8726 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.4000 .4094 86.0000 3.385 36.0000 1.417 16.0000 .6299 SPHX070304R.. 2
                      List price:
                      C$401.42 /each
                      Your price:
                      1191075 CBTF220R2WD20N3M CBTF220R2WD20N3M 22.1650 .8730 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 86.0000 3.385 36.0000 1.417 16.0000 .6299 SPHX060204R.. 3
                        List price:
                        C$446.00 /each
                        Your price:
                        2204406 CBTF230R2WD20N2M CBTF230R2WD20N2M 23.1650 .9120 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 91.0000 3.582 41.0000 1.614 21.0000 .8268 SPHX090304R.. 2
                          List price:
                          C$407.21 /each
                          Your price:
                          2204400 CBTF230R2WD20N3M CBTF230R2WD20N3M 23.1650 .9120 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 91.0000 3.582 41.0000 1.614 16.0000 .6299 SPHX070304R.. 3
                            List price:
                            C$456.67 /each
                            Your price:
                            1246203 CBTF240R2WD20N2M CBTF240R2WD20N2M 24.1650 .9510 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 91.0000 3.582 41.0000 1.614 18.5000 .7283 SPHX090304R.. 2
                              List price:
                              C$418.02 /each
                              Your price:
                              2204408 CBTF240R2WD20N3M CBTF240R2WD20N3M 24.1650 .9514 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 91.0000 3.582 41.0000 1.614 16.0000 .6299 SPHX070304R.. 3
                                List price:
                                C$467.33 /each
                                Your price:
                                2204407 CBTF250R2WD20N2M CBTF250R2WD20N2M 25.1650 .9907 -0.120000 -0.004 0.120000 .0047 20.0 .7874 12.0000 .4724 96.0000 3.779 46.0000 1.811 23.5000 .9252 SPHX090304R.. 2
                                  List price:
                                  C$418.79 /each
                                  Your price:
                                  2204401 CBTF250R2WD20N3M CBTF250R2WD20N3M 25.1650 .9907 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 96.0000 3.779 46.0000 1.811 21.0000 .8268 SPHX070304R.. 3
                                    List price:
                                    C$478.00 /each
                                    Your price:
                                    1191076 CBTF260R2WD20N2M CBTF260R2WD20N2M 26.1650 1.030 -0.120000 -0.004 0.120000 .0047 20.0 .7874 13.0000 .5118 96.0000 3.779 46.0000 1.811 23.5000 .9252 SPHX090304R.. 2
                                      List price:
                                      C$424.58 /each
                                      Your price:
                                      2204409 CBTF270R2WD20N3M CBTF270R2WD20N3M 27.1650 1.069 -0.120000 -0.004 0.120000 .0047 20.0 .7874 10.5000 .4134 96.0000 3.779 46.0000 1.811 21.0000 .8268 SPHX090304R.. 3
                                        List price:
                                        C$499.34 /each
                                        Your price:
                                        1246205 CBTF280R2WD20N3M CBTF280R2WD20N3M 28.1650 1.109 -0.120000 -0.004 0.120000 .0047 20.0 .7874 15.0000 .5906 101.0000 3.976 51.0000 2.007 23.5000 .9252 SPHX090304R.. 3
                                          List price:
                                          C$510.01 /each
                                          Your price:
                                          1246166 CBTF300R2WD20N3M CBTF300R2WD20N3M 30.1650 1.188 -0.120000 -0.004 0.120000 .0047 20.0 .7874 15.0000 .5906 101.0000 3.976 51.0000 2.007 23.0000 .9055 SPHX090304R.. 3
                                            List price:
                                            C$531.33 /each
                                            Your price:
                                            1246207 CBTF320R2WD20N3M CBTF320R2WD20N3M 32.1950 1.268 -0.120000 -0.004 0.120000 .0047 20.0 .7874 17.0000 .6693 101.0000 3.976 51.0000 2.007 23.0000 .9055 SPHX090304R.. 3
                                              List price:
                                              C$552.66 /each
                                              Your price:
                                              1246187 CBTF330R2WD20N3M CBTF330R2WD20N3M 33.1950 1.307 -0.120000 -0.004 0.120000 .0047 20.0 .7874 17.0000 .6693 101.0000 3.976 51.0000 2.007 25.5000 1.003 SPHX090304R.. 3
                                                List price:
                                                C$563.33 /each
                                                Your price:
                                                2204402 CBTF340R2WD32N3M CBTF340R2WD32N3M 34.1950 1.346 -0.120000 -0.004 0.120000 .0047 32.0 1.259 18.0000 .7087 111.0000 4.370 51.0000 2.007 25.5000 1.003 SPHX090304R.. 3
                                                  List price:
                                                  C$573.99 /each
                                                  Your price:
                                                  2204403 CBTF350R2WD32N3M CBTF350R2WD32N3M 35.1950 1.385 -0.120000 -0.004 0.120000 .0047 32.0 1.259 19.0000 .7480 111.0000 4.370 51.0000 2.007 25.5000 1.003 SPHX090304R.. 3
                                                    List price:
                                                    C$584.66 /each
                                                    Your price:
                                                    1246188 CBTF360R2WD32N3M CBTF360R2WD32N3M 36.1950 1.425 -0.120000 -0.004 0.120000 .0047 32.0 1.259 19.0000 .7480 116.0000 4.566 56.0000 2.204 27.5000 1.082 SPHX090304R.. 3
                                                      List price:
                                                      C$595.31 /each
                                                      Your price:
                                                      2204404 CBTF380R2WD32N3M CBTF380R2WD32N3M 38.1950 1.503 -0.120000 -0.004 0.120000 .0047 32.0 1.259 22.0000 .8661 121.0000 4.763 61.0000 2.401 30.0000 1.181 SPHX120404R.. 3
                                                        List price:
                                                        C$616.64 /each
                                                        Your price:
                                                        1246195 CBTF400R2WD32N3M CBTF400R2WD32N3M 40.1950 1.582 -0.120000 -0.004 0.120000 .0047 32.0 1.259 21.0000 .8268 121.0000 4.763 61.0000 2.401 30.5000 1.200 SPHX120404R.. 3
                                                          List price:
                                                          C$637.98 /each
                                                          Your price:
                                                          1246168 CBTF420R2WD32N3M CBTF420R2WD32N3M 42.1950 1.661 -0.120000 -0.004 0.120000 .0047 32.0 1.259 22.0000 .8661 126.0000 4.960 66.0000 2.598 33.5000 1.318 SPHX120404R.. 3
                                                            List price:
                                                            C$659.32 /each
                                                            Your price:
                                                            1246216 CBTF460R2WD32N3M CBTF460R2WD32N3M 46.1950 1.819 -0.120000 -0.004 0.120000 .0047 32.0 1.259 25.0000 .9843 126.0000 4.960 66.0000 2.598 33.5000 1.318 SPHX120404R.. 3
                                                              List price:
                                                              C$701.97 /each
                                                              Your price:
                                                              List price:
                                                              Discount: %
                                                              Your price:
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