19mm Countersink 90° HSSE-Co 5 Flute UltimateCut, High Wear Resistance - Ruko GmbH

Take advantage of the newly developed cutting geometry that significantly reduces axial and radial forces while ensuring a quiet, rattle‑free chamfer and long tool life; order the countersink directly via Metav Werkzeuge or consult their specialists if further details are required.

ULTIMATECUT 90° Countersink, 19 mm – HSSE‑Co, DIN 335C (RUKO)

The ULTIMATECUT countersink is a 90° finishing tool designed for precise chamfering and deburring across a wide range of machining applications, delivering stable performance with reduced cutting forces.

• Reduced axial and radial forces
• Quiet, rattle‑free countersinking
• Extra‑wide chip flutes for heat removal
• High wear resistance with cobalt steel

Smoother countersinking through optimised cutting geometry

The newly engineered cutting geometry reduces both axial forces and radial forces, which results in a noticeably calmer machining process and a consistently rattle‑free finish. A variable relief profile smooths the engagement of the cutting edges, lowering vibrations and preventing chatter; this benefit is especially relevant where surface quality and repeatability are required. The DIN 335C compliance ensures predictable contact geometry for chamfers and deburring operations, making the tool suitable for precision tasks where hole finish and concentricity matter.

Reliable chip and heat evacuation for longer tool life

Specially dimensioned chip‑space parameters — such as a controlled chip angle, optimised transition radius and an extra‑wide chip flute — enable efficient chip evacuation and heat dissipation. This reduces thermal load on the cutting edges and counteracts material build‑up, which in turn improves wear resistance and extends service intervals. For workshops running continuous or batch operations, the result is a lower tool‑change frequency and steadier component quality.

Flexible cutting speeds without compromising quality

The tool geometry was developed to perform at both high‑speed and low‑speed cutting regimes while maintaining consistent chamfer quality. Because the design mitigates material welding on the cutting edges and reduces the required feed force, operators can adapt spindle speeds to the workpiece and machine capability without sacrificing the finish. This versatility makes the countersink appropriate for diverse applications where different materials and machine power levels are encountered.

Lower operator effort and improved process stability

By significantly cutting down the required feed force during countersinking, the tool reduces operator strain and enhances process stability on manual and CNC machines alike. The combination of reduced forces and improved chip control shortens set‑up validation and increases throughput, so production sequences become more predictable. For manufacturing environments where efficiency and consistent quality are priorities, the geometry of this countersink translates directly into lower rework and steadier output.

For demanding chamfering tasks choose the RUKO ULTIMATECUT and contact Metav Werkzeuge for competent advice and reliable supply from Emmerich to the workshop bench.

Technical data

• Article number: 8000422465NW
• Product designation: ULTIMATECUT countersink, 90° D 19 mm (translated)
• Manufacturer: Ruko GmbH
• Packaging unit: 1
• UID: 8000422465NW

Facts

• Diameter: 19 mm
• Angle: 90°
• Standard: DIN 335C
• Material: HSSE‑Co 5 (cobalt alloyed high‑speed steel)
• Flutes: 3
• Feed in steel up to 800 N: 0.2 mm/rev

Special features

• Newly developed cutting geometry for reduced cutting forces
• Variable relief for quiet, rattle‑free operation
• Extra‑wide chip flute for optimal chip and heat removal
• Optimised chip angle and transition radius to reduce weld‑up
• Suitable for high and low cutting speeds without loss of finish
• Designed for long wear life and consistent chamfer quality

FAQ

What materials is this countersink suitable for? The RUKO ULTIMATECUT countersink is designed for broad applicability and delivers good results across many commonly machined materials thanks to its geometry that counters weld‑up and supports varied cutting speeds.

What is the recommended feed in steel? For steel machining under a cutting force of up to 800 N the recommended feed is 0.2 mm per revolution when using this countersink.

How many flutes does the tool have and why does that matter? The tool has three flutes; this configuration balances chip removal and cutting edge stability, aiding the ULTIMATECUT in producing a stable, rattle‑free chamfer.

Is the tool compliant with any standards? Yes, the countersink follows the DIN 335C specification for 90° countersinks, providing a familiar reference geometry for precision chamfering tasks.

Which material is the tool made from? The countersink is manufactured from HSSE‑Co 5, a cobalt‑alloyed high‑speed steel that contributes to improved wear resistance under demanding cutting conditions.

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