23mm Countersink 90° HSS-E Co 5 Flute UltimateCut Three-Point, High Wear Resistance - Ruko GmbH

Take advantage of reduced axial and radial cutting forces combined with superior chip evacuation for quieter, more precise countersinking and longer tool life; order the tool directly via Metav Werkzeuge or contact the consultants for tailored advice.

ULTIMATECUT Countersink 90° D23 mm, HSSE‑Co5 by RUKO

The ULTIMATECUT is a 90° countersink engineered for quiet, high‑quality sinking operations across a wide range of materials.

• Countersink »ULTIMATECUT« by RUKO
• Reduced axial and radial cutting forces
• Extra‑wide flute for optimal chip evacuation
• Suitable for high and low cutting speeds

Engineered geometry for a calmer, more precise sink

The newly developed cutting geometry significantly lowers axial and radial forces, which reduces the effort required during the sinking operation and minimises tool deflection. A specially designed, variably profiled relief produces a calm, rattle‑free motion that yields an exact, circular finish. For production environments where repeatable hole quality matters, this geometry translates into fewer rejects and less rework, improving throughput without requiring changes to machining strategy.

Better chip and heat control for extended service life

Optimised chip‑space parameters — including rake angle, transition radius and an extra‑wide flute — promote efficient chip and heat removal. This configuration reduces material welding on the cutting edges and supports high wear resistance, helping the tool retain its geometry under continuous use. In practice, these features mean longer intervals between tool changes and more consistent countersink quality, which benefits both small workshops and industrial lines aiming for predictable tool maintenance cycles.

Consistent finish at varied cutting speeds and materials

The tool maintains sink quality whether operated at low or high cutting speeds, enabling flexibility in process planning. The design counteracts edge welding and mitigates the need for excessive feed force; the data notes a recommended feed in steel up to 800 N: 0.2 mm/rev. As a result, the countersink delivers reliable performance across many workpiece materials and application types, supporting mixed‑material production without constant parameter adjustment.

Lower thrust, improved handling and measurable savings

Reduced thrust during the countersinking cycle allows the use of lighter fixtures and diminishes stress on spindle bearings, which can lower peripheral costs over time. The combination of quieter operation and stable sinking behaviour supports higher first‑pass quality rates. For operations focused on efficiency, the design offers a clear cost‑benefit via reduced downtime and fewer consumable replacements.

Contact Metav Werkzeuge today to discuss the ULTIMATECUT countersink and arrange expert guidance from our Emmerich team.

Technical data

• Article number: 8000422467NW
• UID: 8000422467NW
• Designation: Countersink ULTIMATECUT DIN 335C, 90° D 23 mm, HSSE‑Co5, 3 cutting edges, RUKO
• Packaging unit: 1

Facts

• Diameter: 23 mm
• Angle: 90°
• Feed in steel up to 800 N: 0.2 mm/rev

Special features

• Newly developed cutting geometry reduces axial and radial forces
• Variable relief for quiet, chatter‑free sinking operation
• Extra‑wide flute and optimised rake angle for chip and heat removal
• High wear resistance and reduced material welding
• Suitable for high and low cutting speeds; broad material applicability

FAQ

What materials can be processed with this countersink?
The ULTIMATECUT countersink is designed for broad material applicability and achieves best performance in almost all materials and applications, maintaining quality at both high and low cutting speeds.

How does the tool reduce the required feed force?
The specially developed cutting geometry and variable relief reduce axial and radial forces during the sinking operation, so less feed force is required for the same quality of countersink.

Is the tool suited to continuous production use?
Yes — the combination of efficient chip evacuation, heat removal and high wear resistance makes this countersink suitable for continuous use with predictable tool life.

What does HSSE‑Co5 indicate for tool performance?
HSSE‑Co5 denotes high‑speed steel with 5% cobalt content, offering enhanced hot hardness and wear resistance compared with standard high‑speed steels, which supports sustained performance under demanding conditions.

How is chip evacuation improved compared with conventional designs?
An extra‑wide flute together with optimised rake and transition radii improves chip flow and heat dissipation, which reduces material welding and helps maintain a smooth countersink surface.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com