23mm Countersink 90° HSSE-Co High Wear Resistance, Variable Relief - Ruko GmbH

Benefit from a tool that combines dramatically reduced axial and radial forces with optimised chip evacuation and high wear resistance for consistently smooth, burr‑free countersinks; order directly via Metav Werkzeuge or request application guidance from our consultants.

ULTIMATECUT 90° Conical Countersink DIN 335C — 23 mm, HSSE‑Co 5 (RUKO)

The ULTIMATECUT is a precision 90° conical countersink designed for stable, rattle‑free chamfering across a wide range of workshop and industrial applications

• Reduced axial and radial cutting forces
• Extra‑wide flute for efficient chip removal
• Quiet, vibration‑free countersinking operation
• High wear resistance for extended tool life

Consistent, burr‑free chamfers through advanced geometry

The tool’s completely redeveloped cutting geometry reduces both axial and radial forces during the countersinking process, which results in a markedly calmer cutting action and an exact, round surface finish that is free from chatter. This refined geometry includes a variable relief profile that stabilises the tool in the hole and minimises the tendency to pull or jump, so operators and automated machines alike benefit from repeatable, high‑quality chamfers.

Controlled chips and heat for longer tool life

A set of specially designed chip‑space parameters — including optimised chip evacuation, tailored rake angles, transition radii and an extra‑wide flute — ensures efficient removal of swarf and reliable heat dissipation. Manufactured from HSSE‑Co 5, the countersink delivers improved toughness and wear resistance, allowing sustained performance under demanding conditions; feed in steel is specified at 0.2 mm/rev up to 800 N, illustrating the tool’s capacity for controlled, predictable material removal.

Versatile performance at varied cutting speeds

The new geometry counteracts material adhesion and substantially reduces required feed forces, permitting the tool to be run at high and low cutting speeds without compromising the quality of the countersink. The result is a quieter, smoother process with fewer secondary operations for deburring, making the device suitable for series production as well as precision jobbing. This adaptability supports a broad spectrum of applications and contributes to efficient production workflows.

For reliable supply and practical application advice on the RUKO ULTIMATECUT, contact Metav Werkzeuge — technical consultants available from Emmerich will advise on suitability and delivery.

Technical Data

• Article number: 8000422467NW
• Description: ULTIMATECUT 90° conical countersink DIN 335C, ø 23 mm, HSSE‑Co 5, 3 flutes
• Manufacturer: Ruko GmbH

Core specifications

• Diameter: 23 mm
• Angle: 90°
• Standard: DIN 335C
• Flutes: 3
• Feed in steel up to 800 N: 0.2 mm/rev

Special features

• Newly developed cutting geometry reducing axial and radial forces
• Variable relief for smooth, rattle‑free countersinking
• Extra‑wide flute for optimised chip evacuation and heat dissipation
• Reduced material welding on the cutting edges
• High wear resistance from HSSE‑Co 5 material
• Stable performance at very high and low cutting speeds

FAQ

What range of materials is the countersink suitable for?
The ULTIMATECUT countersink (RUKO, SKU 8000422467NW) achieves excellent results across a broad range of materials and applications, with specific feed guidance provided for steel.

What is the cutting material and why does it matter?
Manufactured from HSSE‑Co 5, the tool combines high‑speed steel toughness with cobalt for improved heat resistance and wear resistance, helping to extend tool life under demanding conditions.

What are the dimensional and standard specifications?
The tool is a 90° conical countersink to DIN 335C with a nominal diameter of 23 mm; it is supplied as a 3‑flute design for balanced cutting and chip removal.

Can the countersink be used at high cutting speeds?
Yes — the geometry permits use at both high and low cutting speeds without loss of surface quality, enabling flexibility in production settings.

How does the design affect surface finish and process stability?
The variable relief and optimised flute geometry reduce axial and radial loads and limit chatter, producing a precise, burr‑free finish and requiring less feed force during countersinking.

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