6.3-20.5mm Countersink Set 90° HSSE-Co 5, 6-Piece Plastic Case - Ruko GmbH

Take advantage of the ULTIMATECUT geometry to reduce axial and radial forces while ensuring a chatter‑free, round countersink finish; benefit from high wear resistance and optimised chip evacuation for reliable series production. Order directly via Metav Werkzeuge or request expert consultation for application support.

Ruko ULTIMATECUT countersink set (DIN 335) — HSSE‑Co5, 90°, Ø 6.3–20.5 mm, 6‑piece

The Ruko ULTIMATECUT countersink set is a precision 6‑piece range for producing clean, round chamfers and deburring in workshop and production environments.

*Reduced axial and radial forces with new geometry
*Very smooth, chatter‑free countersinking
*Wide flute and optimised chip evacuation
*Suitable for high and low cutting speeds
*Supplied in a plastic storage case

Reduced cutting forces for steadier machining and longer tool life

The set’s completely reworked cutting geometry significantly lowers axial and radial forces during the countersinking operation. This reduction in load means the cutters run more stably, which produces an exact, rattle‑free surface in the chamfer and minimises tool vibration. For production environments where repeatability matters, the calmer cutting action translates into fewer rejects and reduced machine wear. The design therefore supports efficient workflow and predictable process behaviour.

Improved chip and heat management for consistent edge quality

A combination of variable relief, optimised chip evacuation and a widened flute ensures efficient removal of swarf and rapid dissipation of heat. These parameters — including chip angle and transition radii — reduce the risk of material build‑up on the cutting edge and extend wear resistance. As a result, operators achieve consistent edge quality even in longer runs, while maintenance intervals are extended because the cutters resist premature blunting.

Versatile performance across machining speeds and applications

The new geometry counteracts material welding and reduces the required feed force, enabling successful countersinking at both high and low cutting speeds without compromising finish quality. The cutters deliver high performance across a broad range of tasks, from single‑part finishing to repetitive production. Less feed effort also eases tube and thin‑walled component handling, where control of axial load is essential to avoid distortion.

Practical set configuration for workshop use and storage

The 6‑piece collection covers the diameter range Ø 6.3–20.5 mm, packaged in a secure plastic storage case for transport and organised storage. The compact cassette keeps the cutters protected between operations and simplifies tool selection on the bench. For workshops and small series production, the set offers a ready‑to‑use solution that balances process reliability with easy handling.

For high‑performance, low‑force countersinking using RUKO’s ULTIMATECUT technology, contact Metav Werkzeuge for ordering or application advice — info@metav-werkzeuge.com, +49 2822 7131930

Technical data

• Article number: 8000422527NW
• Item designation: Kegelsenkersatz DIN 335 90Grad ULTIMATECUT 6,3-20,5mm HSSE-Co 5 RUnaTEC 6-tlg.
• Manufacturer: Ruko GmbH

Facts

• Diameter range: Ø 6.3–20.5 mm
• Number of pieces: 6
• Angle: 90°
• Material grade: HSSE‑Co5
• Packaging unit: 1

Special features

• Newly developed cutting geometry reducing axial and radial forces
• Variable relief for calm, chatter‑free countersinking
• Wide flute and optimised chip and heat evacuation
• High wear resistance and reduced material weld‑up
• Suitable for very high and very low cutting speeds
• Supplied in plastic cassette for storage and transport

FAQ

What diameters are included in the set?
The set covers a diameter range of Ø 6.3–20.5 mm and contains six individual countersinks.

Is the ULTIMATECUT set suitable for high‑speed machining?
Yes, the ULTIMATECUT countersinks are engineered for both high and low cutting speeds while maintaining a consistent finish.

How does the geometry affect tool life?
The ULTIMATECUT geometry improves chip evacuation and reduces thermal load, contributing to increased wear resistance and longer service life.

What finish quality can be expected from these countersinks?
The variable relief and reduced cutting forces produce an exact, chatter‑free and round countersink finish suitable for production use.

How are the tools supplied and stored?
The six countersinks are supplied in a durable plastic storage cassette for organised workshop storage.

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