12mm Core Drill HSS 55mm Cut Depth Weldon Shank 3/4" - Ruko GmbH

Take advantage of the combination of high-speed-steel durability, a compact 12 mm bore with 55 mm cutting depth and a rigid Weldon shank for stable fastening, ensuring efficient and repeatable holemaking. Order directly via Metav Werkzeuge or consult the specialists if necessary.

Ruko annular cutter 12 mm HSS — 55 mm cutting depth, Weldon shank

A Ruko annular cutter 12 mm HSS engineered for fast, low-burr holemaking in steel, cast iron and non-ferrous alloys, ideal for production and maintenance workshops

• High-performance HSS construction
• 55 mm effective cutting depth
• Weldon shank 19.05 mm (3/4") for rigid mounting
• Four cutting edges for consistent chip control

Precise, productive cuts for demanding materials

Made from HSS, the annular cutter delivers consistent material removal with reduced cutting forces compared with solid twist drills when producing larger holes. The combination of a 12 mm bore and a 55 mm cutting depth permits through-holes in medium-thickness sections without repeated drilling passes, which shortens cycle times and reduces thermal load on the part. The cutter’s four cutting edges produce predictable chips and a clean hole flank, so rework is minimised and subsequent assembly steps align more quickly.

Stable clamping and reliable machine compatibility

Designed with a Weldon shank of 19.05 mm (3/4"), the tool secures in standard Weldon holders and magnetic drill chucks for vibration‑resistant operation. The shank style prevents slippage under high torque, maintaining concentricity during plunge cutting and enabling reproducible centre positions. Robust mounting decreases tool wobble and contributes to longer tool life, while the annular concept reduces spindle loading compared with full-diameter drilling, improving overall machine throughput.

Streamlined workshop integration and material versatility

Suited to structural steel, T‑sections, large sheet metal and a broad range of alloys, the annular cutter allows a single tool to cover multiple applications, reducing tool change frequency and inventory complexity. The cutter’s geometry supports efficient chip evacuation, lowering the risk of clogging on through cuts and helping maintain surface quality. For workshops seeking dependable performance without complex setup, the annular cutter provides a practical balance of precision and operational ease.

For tailored advice on integrating the Ruko annular cutter with specific magnetic drills or machine adapters, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 4000602443NW
• Label: Kernbohrer D.12mm HSS Schnitt-T.55mm Weldon RUKO
• Manufacturer: Ruko GmbH Präzisionswerkzeuge
• Product type: Annular cutter

Facts

• Diameter: 12 mm
• Total length: 88 mm
• Cutting depth: 55 mm
• Number of cutting edges: 4
• Weldon shank: 19.05 mm (3/4")
• Packing unit: 1

Special features

• Material: HSS
• Suitable for steel, steel castings, non-ferrous and light metals
• Shank type: Weldon
• No coating specified
• Designed for holemaking in structural and plate applications

FAQ

What materials can this annular cutter machine through? The Ruko annular cutter 12 mm HSS machines steel, steel castings and a range of non‑ferrous and light metals as stated in the product description (SKU 4000602443NW).

Is the Weldon shank compatible with magnetic drill chucks? Yes. The Weldon shank (19.05 mm / 3/4") of this Ruko cutter is intended for use with Weldon holders and common magnetic‑drill chucks that accept 3/4" Weldon mounting.

How does an annular cutter differ from a twist drill for this application? An annular cutter removes only the material at the hole periphery, reducing spindle load and producing less heat and shorter cycle times compared with solid twist drills; the design used by this Ruko tool also improves chip control.

Can this cutter produce accurate, repeatable holes in structural steel? Yes. The geometry and rigid Weldon mounting of the Ruko annular cutter support concentric, repeatable hole positions in structural pieces such as T‑beams and large plates.

Are any coatings applied to improve wear resistance? No coating is specified for this Ruko annular cutter; the tool is supplied in high‑speed steel (HSS) as described.

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