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CTR • Counterbore
CTR • Counterbore
CTR • Counterbore
CTR • Counterbore
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S2S Weldon Shank • Inch

CTR • Counterbore

SAP Material Number 1992584
ISO Catalog Number CBT1375RW100N3
ANSI Catalog Number CBT1375RW100N3
[D1] Drill Diameter M 34.925 mm
[D1] Drill Diameter M 1.375 in
Drill Diameter Tol. Min -0.196 mm
Drill Diameter Tol. Min -0.007 in
Drill Diameter Tol. Max 0.196 mm
Drill Diameter Tol. Max .0077 in
[D] Adapter / Shank / Bore Diameter 25.4 mm
[D] Adapter / Shank / Bore Diameter 1 in
Pre Machined Hole Diameter [D6] 23.012 mm
Pre Machined Hole Diameter [D6] .9062 in
[L] Overall Length 101.61 mm
[L] Overall Length 4 in
[L4] Maximum Drilling Depth 22.225 mm
[L4] Maximum Drilling Depth .875 in
[LS] Shank Length 58.4 mm
[LS] Shank Length 2.299 in
Gage Insert SPHX090304R.
Number of Insert Cutting Diameter 1 3
See all Product Variants

Uses and application

  • Counter BoringCounter Boring
  • Shank - Cylindrical  WeldonShank - Cylindrical Weldon
  • Flood Coolant: DrillingFlood Coolant: Drilling
  • 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 reduct additional drill operations to achieve a precise 90° bottom.

  • Counterboring tool shipped with insert screws and Torx wrench.

Machine Side


Workpiece Side


Spare Parts for S2S Weldon Shank • Inch

Spare Part
    TORX-WRENCH TX9 170.024 TORX-WRENCH TX9 170.024
    TORX-WRENCH TX9 170.024
    Spare Part
      INSERT SCR M3-0.5 x 7.2 T9 INSERT SCR M3-0.5 x 7.2 T9
      INSERT SCR M3-0.5 x 7.2 T9
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