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CTR™ • Counterbore
CTR™ • Counterbore
CTR™ • Counterbore
CTR™ • Counterbore
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S2S Whistle Notch WN Shank • Metric

CTR™ • Counterbore

SAP Material Number 1246166
ISO Catalog Number CBTF300R2WD20N3M
ANSI Catalog Number CBTF300R2WD20N3M
[D1] Drill Diameter M 30.165 mm
[D1] Drill Diameter M 1.188 in
Drill Diameter Tol. Min -0.12 mm
Drill Diameter Tol. Min -0.004 in
Drill Diameter Tol. Max 0.12 mm
Drill Diameter Tol. Max .0047 in
[D] Adapter / Shank / Bore Diameter 20 mm
[D] Adapter / Shank / Bore Diameter .7874 in
Pre Machined Hole Diameter [D6] 15 mm
Pre Machined Hole Diameter [D6] .5906 in
[L] Overall Length 101 mm
[L] Overall Length 3.976 in
[L2] Head Length 51 mm
[L2] Head Length 2.007 in
[L4] Maximum Drilling Depth 23 mm
[L4] Maximum Drilling Depth .9055 in
Gage Insert SPHX090304R.
Number of Insert Cutting Diameter 1 3
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Uses and application

  • Coolant - Through CoolantCoolant - Through Coolant
  • Shank - Cylindrical Whistle Notch™Shank - Cylindrical Whistle Notch™
  • Counter BoringCounter Boring
  • 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

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.

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