10.4mm Counterbore 90° HSSE-Co 5 Flute Carbide-Tipped High Performance Reduced Thrust - Ruko GmbH

Take advantage of the tool's reduced axial and radial forces together with optimised chip and heat evacuation for a smooth, rattle-free countersink and longer service intervals. Order the countersink directly via Metav Werkzeuge or ask our consultants for application-specific advice.

RUKO ULTIMATECUT Countersink DIN 335C — HSSE‑Co 5, 90° Ø10.4 mm

The ULTIMATECUT countersink by RUKO is a 90° DIN 335C tool designed for precision deburring and chamfering across a broad range of workshop and production applications

• Reduced axial and radial forces
• Quiet, chatter-free countersinking
• Wide flute for optimal chip and heat removal
• High wear resistance for extended life

Precise, quiet countersinking that improves surface quality

The new cutting geometry of the ULTIMATECUT significantly reduces axial and radial forces, which leads to a smoother machining action and a lower load on the tool and spindle. The specially developed variable relief creates a calm, vibration‑free countersinking motion that produces an exact, round and chatter-free finish, reducing the need for rework and ensuring consistent hole chamfers in repeated production runs.

Controlled chip flow and heat management for longer life

Optimised chip-space parameters — including chip angle, transition radius and an extra‑wide flute — ensure efficient chip evacuation and heat dissipation. This layout minimises material buildup and welding on the cutting edges and directly contributes to higher wear resistance, extending tool life and maintaining dimensional quality over longer machining cycles.

Reliable performance at varied cutting speeds

The tool's geometry is engineered to allow machining at both high and low cutting speeds without sacrificing the quality of the countersink. This versatility makes the countersink suitable for diverse applications and process windows, while the specification for feed in steel up to 800 N: 0.15 mm/rev provides a practical reference for process setting and stable chip formation under load.

Productivity gains through lower feed force and consistent results

Because the redesigned geometry reduces the required feed force during countersinking, there is less mechanical stress on fixtures and spindles and fewer stoppages due to tool chatter. The result is improved cycle consistency, reduced scrap and a more reliable production flow. Integration into existing tool setups is straightforward thanks to the DIN 335C standard and the familiar handling of a 3‑flute, HSSE‑Co grade tool.

Choose RUKO's ULTIMATECUT for dependable, high-performance countersinking and contact Metav Werkzeuge in Emmerich for expert application advice and supply from our European quality hub: info@metav-werkzeuge.com

Technical Data

• Article number: 8000422461NW
• Item description: Countersink ULTIMATECUT DIN 335C 90° Ø10.4 mm HSSE‑Co 5, 3 flutes
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Facts

• Diameter: Ø10.4 mm
• Point angle: 90°
• Standard: DIN 335C
• Material grade: HSSE‑Co 5
• Flutes: 3
• Feed in steel up to 800 N: 0.15 mm/rev

Special features

• Newly developed cutting geometry reduces axial and radial forces
• Variable relief for quiet, chatter-free countersinking
• Wide flute and optimised chip space for chip and heat evacuation
• High wear resistance; reduces material welding
• Suitable for a wide range of cutting speeds and applications

FAQ

Which materials is the ULTIMATECUT suitable for?
The ULTIMATECUT countersink delivers high performance across a wide range of materials and applications, achieving consistent results without compromising surface quality.

What are the key specifications of this countersink?
The tool is a DIN 335C countersink with a 90° point angle, Ø10.4 mm diameter, HSSE‑Co 5 grade and 3 flutes (SKU 8000422461NW).

What feed and speed information is available for production planning?
For steel applications a reference is given as feed up to 800 N with 0.15 mm/rev; the geometry allows reliable operation at both high and low cutting speeds.

How does the cutting geometry improve the countersink result?
The redesigned geometry reduces axial and radial loads and, together with the variable relief, produces a round, chatter-free finish and minimises edge welding and wear.

Is the tool suitable for serial production?
Yes; the combination of efficient chip evacuation, heat management and elevated wear resistance supports extended tool life and consistent results in repetitive production.

Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen