PCD Countersink 90° Ø20 mm – PCD-CSK-90-20-V1 | Aoshiji® Custom Tool

Aoshiji® Custom Tool offers the PCD Countersink 90° Ø20 mm (Model PCD-CSK-90-20-V1) for precision countersinking and chamfer finishing on pre-drilled holes. This tool is designed for stable, burr-free countersink geometry and extended tool life in demanding CNC machining applications.

Overview

This PCD countersink is specifically designed for precision chamfering and countersinking of pre-drilled holes in aluminum alloys, composites, and non-ferrous materials, where consistent countersink quality and long tool life are critical.
The PCD Countersink 90° Ø20 mm (Model PCD-CSK-90-20-V1) features polycrystalline diamond (PCD) cutting edges that deliver exceptional wear resistance, minimal edge degradation, and clean surface finishes compared with conventional carbide or HSS countersinks.

Optimized for high-volume CNC production, this tool provides stable cutting performance and reliable countersink geometry in automotive, aerospace, and precision engineering applications.

Why Use a PCD Countersink for Large-Diameter Chamfering?

For larger countersink diameters such as Ø20 mm, tool stability and edge wear become critical factors.
Compared with carbide countersinks, PCD countersinks offer significantly longer service life and more consistent cutting behavior, especially when machining aluminum alloys, CFRP, and other abrasive non-ferrous materials. This results in reduced tool changes, improved process stability, and lower cost per part in serial production.

Applications

• Countersinking and chamfering on pre-drilled holes in aluminum alloys, copper, brass, composites, and engineering plastics

• Automotive and aerospace components requiring precise 90° flathead screw seats

• Mold and die manufacturing with controlled countersink finishing

• Deburring and edge preparation in precision engineering components

• Custom countersinking requirements (available angles: 60°, 82°, 100°)

Key Features

• One-pass precision – Forms accurate 90° countersinks in a single operation

• PCD cutting edges – Superior wear resistance and extended tool life

• High concentricity – Consistent countersink size, depth, and alignment

• Optimized flute design – Smooth chip evacuation and reduced burr formation

• Guided / pilot tip option – Improves tool stability on pre-drilled holes

• Customizable design – Diameter, countersink angle, flute configuration, and shank type per application

Benefits

• Reduced cycle time with fewer tool changes

• Burr-free countersinks with clean, uniform surface finish

• Longer service life compared with carbide or HSS countersinks

• Lower cost per part in high-volume CNC manufacturing

Technical Specifications

Options & Customization

• Diameter range: Ø2–Ø30 mm or per customer drawing

• Countersink angles: 45°, 60°, 82°, 90°, 100°, or custom

• Configurations: 1–2 flute designs, guided / pilot tip, or special shank styles

• Application-specific edge preparation and PCD grade selection

• Shank options compatible with CNC holders (HSK, BT, CAT, Weldon)

Related Tools

• PCD Flat-Bottom Drill with Dual 45° Chamfers Ø6 mm – Model PCD-FBD-2C45-06-V1 | Aoshiji® Custom Tool

• PCD Tapered Form Drill – Flat-Bottom, 5×45° Chamfers Ø6 mm – Model PCD-TFD-FB-45×5-06-V1 | Aoshiji® Custom Tool

• PCD Special-Form Drill – Custom Geometry & Flat-Bottom Options | Aoshiji® Custom Tool

• PCD Countersink 90° Ø10 mm – PCD-CSK-90-10-V1 | Aoshiji® Custom Tool

• PCD Drill with 3×45° Chamfers Ø6 mm – Model PCD-FD-45×3-06-V1

Contact

This PCD countersink solution is available in both standard and fully customized configurations to meet specific countersinking requirements across different materials and production volumes.

For technical drawings, application discussion, or quotation requests, please contact:
[email protected]

Aoshiji® Custom Tool – Precision Diamond Tooling Solutions