27mm Core Drill HSS 55mm Cut Length Weldon Shank - Ruko GmbH

Take advantage of the high-speed steel construction and a 55 mm cutting depth to produce clean, repeatable holes with minimal power draw; the Weldon shank ensures secure clamping for stable machining. Order the annular cutter directly via Metav Werkzeuge or contact the consultants for tailored technical advice.

Annular cutter 27 mm HSS, 55 mm cutting depth — RUKO

The annular cutter 27 mm is a high-performance cutting tool for fast, chip-efficient holemaking in steel and non-ferrous metals.

• High-speed steel (HSS) construction
• 55 mm cutting depth for substantial holes
• Weldon shank 19.05 mm (3/4") for secure clamping
• 7 cutting teeth for efficient material removal

Faster, cleaner holemaking with less power consumption

This annular cutter is made from high-speed steel (HSS) to combine hardness and toughness for demanding machining tasks. Compared with conventional twist drills, an annular cutter removes only the material perimeter, which reduces cutting forces and shortens cycle times while delivering a truer hole and better surface finish. The 27 mm working diameter and 55 mm cutting depth are balanced for structural applications such as T‑sections and large plates, where a reproducible bore and accurate fit are crucial. The tool’s 7 cutting teeth help distribute cutting loads and produce consistent chips, which reduces heat build-up and extends tool life.

Stable mounting and consistent concentricity for reliable production

A robust Weldon shank 19.05 mm (3/4") provides a secure interface with Weldon-style holders and arbors, minimising slippage under intermittent or heavy loads. The secure clamping achieved by the Weldon configuration supports consistent concentricity and repeatability across production batches. With an 88 mm overall length, the cutter offers sufficient reach while keeping overhang to a minimum, which helps preserve rigidity and hole accuracy. These mechanical choices favour reproducible machining results and reduce rework in busy workshops.

Practical benefits for workshop efficiency and material versatility

Designed for a wide range of applications, the cutter is suitable for steel, cast iron, and non-ferrous and light metals, making it a versatile choice for fabrication and maintenance tasks. Because only an annular section is cut out, the process is materially efficient and produces shorter chips that are easier to clear from the hole, saving time on chip evacuation. The tool is supplied as a single unit, enabling targeted replacement and simplified inventory control. For operations seeking both productivity and predictable results, the cutter represents a pragmatic investment in process stability.

For expert guidance on integrating RUKO annular cutters into production, contact Metav Werkzeuge for personalised advice and reliable delivery from Emmerich — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 4000602458NW
• Label: Kernbohrer D.27mm HSS Schnitt-T.55mm Weldon RUKO
• Manufacturer: Ruko GmbH Präzisionswerkzeuge

Numbers / Facts

• Diameter: 27 mm
• Cutting depth: 55 mm
• Overall length: 88 mm
• Shank: 19.05 mm (3/4")
• Cutting teeth: 7
• Packaging unit: 1

Special features / Materials

• Material: High-speed steel (HSS)
• Shank design: Weldon shank 19.05 mm (3/4")
• Suitable for: Steel (e.g. T‑beams, large plates)
• Also suitable for: Cast iron, non‑ferrous and light metals
• Application focus: Efficient core drilling with reduced cutting forces

FAQ

What materials can this annular cutter work with?
The annular cutter from RUKO is suitable for steel, cast iron and a range of non‑ferrous and light metals, making it appropriate for structural and general fabrication work.

What is the cutting depth and how does it affect holemaking?
The cutter offers a 55 mm cutting depth, which determines the maximum axial engagement; this depth supports substantial bore depths while maintaining rigidity and hole quality.

Which shank type is fitted and what does it imply for tooling?
The tool features a Weldon shank 19.05 mm (3/4"), intended for use with Weldon‑style holders and arbors to ensure secure clamping and consistent concentricity in production environments.

How does an annular cutter differ from a twist drill?
An annular cutter removes only the material at the hole perimeter, producing less cutting force, shorter chips and faster cycle times than a twist drill; the RUKO design emphasises clean chip formation and repeatable hole quality.

What are the physical dimensions of the product?
The RUKO annular cutter has a 27 mm diameter, 55 mm cutting depth and 88 mm overall length; it is supplied as a single unit (packaging unit 1) under SKU 4000602458NW.

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