16.5mm Countersink 90° Carbide M2 HSSE-Co 5-Flute Variable Relief Three-Point, High Wear Resistance - Ruko GmbH

The combination of reduced axial and radial forces, HSSE-Co 5 construction and the optimised chip evacuation geometry results in quieter, more precise countersinking and longer tool life; order the RUKO tool directly via Metav Werkzeuge or consult our specialists for application advice.

ULTIMATECUT countersink RUKO DIN 335C 90° D16.5 HSSE-Co 5

the ULTIMATECUT countersink is a precision countersinking tool designed for clean, chatter‑free chamfers across a wide range of materials

• Reduced axial and radial forces
• Smooth, chatter‑free countersinking
• Wide chip flute for optimal evacuation
• Suitable for high and low cutting speeds

Consistent, accurate chamfers through optimised geometry

The newly developed cutting geometry significantly reduces axial and radial forces, which directly lowers the required feed force during the countersinking operation. This leads to a noticeably quieter, rattle‑free process and an exact, circular surface finish of the chamfer. For users unfamiliar with the term, axial forces act along the tool axis and radial forces act perpendicular to it; their reduction improves stability and minimises vibration, producing cleaner edges and fewer reworks. The result is a repeatable, industrial‑grade chamfer every cycle.

Durable performance thanks to HSSE‑Co 5 and thermal management

Manufactured from HSSE‑Co 5, the tool offers enhanced red‑hardness and toughness for longer service life under demanding conditions. Specially designed chip‑space parameters — including rake angle, transition radius and an extra‑wide chip flute — promote efficient chip evacuation and heat dissipation, which reduces wear and prevents material adhesion on the cutting edge. This combination increases tool life and lowers tooling costs per part when compared with standard high‑speed designs.

Flexible feed and speed without sacrificing finish quality

The geometry permits operation at both high and low cutting speeds without compromising the quality of the countersink. For steel applications the tool achieves recommended feeds up to 0.2 mm/rev at cutting forces of up to 800 N, offering a balance between productivity and surface finish. The design also counters material welding on the cutting edges, allowing for cleaner chips and fewer interruptions for cleaning — a practical advantage on mixed‑material production runs.

Practical benefits on the shop floor and in small batches

Because the design reduces required feed force and improves heat control, the tool is well suited to general workshop environments and industrial production alike. The quieter operation and smoother chip flow simplify machine set‑up and reduce cycle variability, which benefits quality assurance processes and downstream inspection. When tool life and consistent finish are priorities, the engineered geometry delivers measurable gains in uptime and yield.

Choose the RUKO ULTIMATECUT countersink for precision, durability and quieter machining — contact Metav Werkzeuge for technical guidance and dependable supply from Emmerich: info@metav-werkzeuge.com / +49 2822 7131930

Technical data

• Article number: 8000422464NW
• SKU: 8000422464NW
• Manufacturer: Ruko GmbH
• Item designation: ULTIMATECUT countersink DIN 335C 90° D16.5 HSSE‑Co 5
• Packaging unit: 1
• UID: 8000422464NW

Core specifications

• Diameter: 16.5 mm
• Angle: 90°
• Standard: DIN 335C
• Material: HSSE‑Co 5 (high‑speed steel with cobalt)
• Recommended feed in steel: up to 0.2 mm/rev at 800 N

Special features

• Reduced axial and radial forces due to new cutting geometry
• Variable relief for a very quiet countersinking operation
• Extra‑wide chip flute for optimal chip and heat evacuation
• Geometry resists material welding and lowers feed forces
• High wear resistance across a wide range of materials
• Suitable for high and low cutting speeds

FAQ

What materials can this countersink machine effectively handle? The ULTIMATECUT countersink from RUKO is designed for a broad material range; its HSSE‑Co 5 construction and chip‑flute geometry support reliable machining of steels and many other common engineering materials.

How does the new geometry improve surface finish? The specially developed cutting geometry reduces axial and radial forces and adds a variable relief, which together produce a smooth, chatter‑free countersink surface when using the RUKO ULTIMATECUT.

What are the key specifications to set on the machine? Set the tool following DIN 335C 90° standards with a 16.5 mm diameter and consider a feed in steel up to 0.2 mm/rev at forces up to 800 N for optimal results with the RUKO ULTIMATECUT (SKU 8000422464NW).

Is the tool suitable for high‑speed machining? Yes, the countersink’s geometry allows both high and low cutting speeds while maintaining chamfer quality, making the ULTIMATECUT suitable for varied production strategies.

How does chip evacuation affect tool life? The extra‑wide chip flute and optimised rake and transition radii improve chip evacuation and heat dissipation, which reduces wear and extends the service life of the RUKO countersink.

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