6.3mm Countersink 90° Solid Carbide HSSE-Co 5 3-Flute High Wear Resistance - Ruko GmbH

Take advantage of the ULTIMATECUT's combination of significantly reduced cutting forces and enhanced chip evacuation to secure consistently precise, rattle‑free countersinks and longer tool life; order directly via Metav Werkzeuge or consult our specialists for technical advice.

RUKO ULTIMATECUT 90° Countersink, 6.3 mm — HSSE‑Co 5, Low‑vibration Performance

The ULTIMATECUT countersink is a 90° chamfering tool engineered for calm, precise deburring and chamfering across a wide range of industrial materials.

• Reduced axial and radial cutting forces
• Quiet, rattle-free countersink finish
• Wide chip groove for fast heat removal
• Performs across high and low cutting speeds

Superior finish through advanced cutting geometry

The newly developed cutting‑edge geometry reduces both axial and radial forces, which directly lowers the thrust required during countersinking. The result is a consistently rattle‑free finish and a precise, circular chamfer without chatter marks. Reduced forces also mean less stress on workholding and on machine spindles, delivering measurable improvements in component surface quality and repeatability for production runs.

Efficient chip and heat management for extended tool life

A specifically designed chip space with optimised chip angle and transition radius, together with an extra‑wide chip groove, ensures reliable chip evacuation and heat dissipation. This efficient removal of swarf and thermal energy reduces the tendency for material buildup on the cutting edges, which in turn supports high wear resistance and prolongs the tool’s service life. For operations concerned with maintenance intervals and tool‑change downtime, this geometry translates into fewer interruptions and lower running costs.

Versatile performance at varied cutting speeds

Built from HSSE‑Co 5 and conforming to DIN 335C form, the tool is capable of maintaining quality across a wide range of cutting conditions. The geometry counters material welding and allows the tool to be used at both high and low cutting speeds without compromising chamfer quality. For steel countersinking, the design supports feeds up to 800 N with a recommended feed of 0.15 mm/rev, enabling stable, controllable material removal in demanding workshop scenarios.

Production advantages and application clarity

Integrating this countersink into a workshop or production line provides tangible operational benefits: lower required feed forces reduce operator fatigue during manual operations and diminish axial loads on automated setups, while the combination of geometry and material ensures reliable results across varied stock. The tool is particularly suited to applications where a clean, burr‑free chamfer is essential and where uptime and consistent quality are priorities.

Contact Metav Werkzeuge to discuss how the RUKO ULTIMATECUT countersink can be integrated into current processes and to obtain tailored technical advice and delivery options from Emmerich.

Technical data

• Article number: 8000422470NW

Facts

• Diameter: 6.3 mm
• Countersink angle: 90°
• Feed in steel up to 800 N: 0.15 mm/rev
• Packaging unit: 1

Special features

• Material: HSSE‑Co 5
• Standard: DIN 335C
• Newly developed cutting‑edge geometry reduces axial and radial forces
• Variable relief for quiet, rattle‑free countersinking
• Wide chip groove for improved chip and heat evacuation
• High wear resistance and reduced material welding
• Performs reliably at high and low cutting speeds

FAQ

What makes this countersink quieter in operation?
The tool’s newly developed cutting‑edge geometry and variable relief minimise axial and radial forces, producing a calm plunge and a rattle‑free finish with the RUKO ULTIMATECUT countersink (SKU 8000422470NW).

Which material is the tool made from?
The countersink is manufactured from HSSE‑Co 5, a high‑speed steel with cobalt alloying that enhances heat resistance and wear performance under demanding conditions.

Can the tool be used at different cutting speeds?
Yes, the design allows effective use at both high and low cutting speeds while maintaining chamfer quality, as stated in the product documentation for the ULTIMATECUT countersink.

What feed setting is recommended for steel?
For steel, the specification indicates use with feed forces up to 800 N and a feed of 0.15 mm/rev to achieve stable, high‑quality countersinks.

Does the geometry help reduce material welding to the cutting edge?
Yes, the combination of optimised chip angle, transition radius and a wide chip groove reduces material welding and improves chip flow, supporting longer tool life and consistent results.

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