25mm Countersink 90° Solid Carbide 3-Flute Shank 10mm For Deburring Low Speed - Ruko GmbH

Benefit from the combination of CBN-ground flutes, solid carbide construction and a 10 mm shank for precise, burr-free countersinking — order the tool directly via Metav Werkzeuge or consult the specialists for any machining questions.

Ruko 90° Countersink to DIN 335C, 25 mm, Carbide (3-flute) — 10 mm shank

Ruko 90° Countersink to DIN 335C is a precision carbide countersink designed for burr-free chamfering, deburring and recessing in workshop and industrial steel applications.

• CBN-ground flutes for razor-sharp edges
• Solid carbide body for extended tool life
• 90° geometry to DIN 335C standard
• 10 mm straight shank for standard toolholders

Precision finish and reliable cutting quality

The combination of CBN-ground flutes and a carbide body produces consistently sharp cutting edges, which is the main factor for a burr-free finish on through-holes and countersinks. The three-flute design promotes stable cutting and a smooth surface, while the standard 90° angle ensures compatibility with typical fastener seating requirements. These construction choices reduce the need for secondary finishing and help maintain a predictable hole geometry in serial production.

Designed for controlled, low-speed machining

The tool is optimised for low cutting speeds, where the CBN-finished flutes deliver their best results. A recommended feed in steel under moderate cutting forces (up to 500 N) is 0.2 mm/rev, which balances feed and finish for most toolroom and workshop set-ups. Compliance with DIN 335C guarantees repeatable chamfer profiles across batches, supporting process stability in production environments and aiding quality control measures.

Practical compatibility and workshop benefits

A 10 mm straight shank allows integration with common chucks and holders, simplifying set-up and reducing changeover time. The uncoated (blank) surface preserves the original cutting geometry and is suitable where coating would impair re-sharpening or change thermal behaviour. Intended applications include countersinking, deburring and recessing in ferrous materials; the design supports frequent use in maintenance, fabrication and toolroom contexts where predictable edge quality is required.

Contact Metav Werkzeuge today for expert guidance on the Ruko carbide countersink (SKU 4000601479NW) and ensure reliable supply from Emmerich for uninterrupted workshop production

Technical data

• Article number: 4000601479NW
• Label: Kegelsenker DIN 335C 90Grad D.25mm HM Blank Z.3 Schaft-D.10mm RUKO
• Manufacturer: Ruko GmbH

Numbers / core technical data

• Diameter: 25 mm
• Angle: 90°
• Shank diameter: 10 mm
• Flutes: 3
• Recommended feed in steel (≤ 500 N): 0.2 mm/rev
• Standard: DIN 335C

Special features / versions

• CBN-ground flutes
• Solid carbide body
• Uncoated (blank)
• For countersinking, deburring and recessing
• Best performance at low cutting speeds

FAQ

What materials is this countersink suitable for?
The Ruko 90° countersink (carbide, 3-flute, SKU 4000601479NW) is intended primarily for steel work; the CBN-ground flutes and carbide body deliver strong performance in ferrous materials.

Which machine speeds are recommended for best results?
Best results with the Ruko carbide countersink are achieved at low cutting speeds, where the CBN-ground flutes maintain sharpness and produce a burr-free finish.

How should the feed be set when countersinking steel?
A feed of around 0.2 mm/rev in steel under cutting forces up to 500 N is specified for consistent results with this countersink.

Is the tool coated or uncoated?
The tool is supplied uncoated (blank), retaining the original carbide cutting geometry and allowing processes that may require re-sharpening or specific thermal behaviour.

Does the geometry conform to industry standards?
Yes — the countersink is manufactured to DIN 335C geometry, ensuring standard 90° chamfer profiles and interchangeability in production processes.

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