19mm Core Drill HSS 55mm Cutting Depth Weldon Shank - Ruko GmbH

Benefit from the combination of high-speed steel construction, 55 mm cutting depth and a sturdy Weldon shank for reliable, fast holemaking; order the annular cutter directly via Metav Werkzeuge or consult our specialists if required.

Kernbohrer D.19mm HSS Schnitt-T.55mm Weldon RUKO — Annular cutter with 19 mm diameter and 55 mm cutting depth

The Kernbohrer D.19mm HSS Schnitt-T.55mm Weldon RUKO is a precision annular cutter designed for heavy-duty metalworking, offering efficient material removal in steel, cast iron and non-ferrous metals.

• High-speed steel construction HSS
• 55 mm cutting depth for deep holes
• Weldon shank 19.05 mm (3/4")
• Five cutting edges for efficient cutting

Increase throughput with faster, cleaner holemaking

Constructed from high-speed steel (HSS), this annular cutter delivers consistently fast performance when producing larger diameter holes. The design removes only the material of the hole’s circumference rather than the full core, which reduces machining time and power consumption compared with twist drills for the same diameter. The five cutting edges promote a cleaner bore and reduced burr formation, meaning less rework and shorter cycle times. For production workshops and maintenance departments, this translates into better utilisation of machine time and fewer tool changes.

Robust shank design for secure clamping and concentricity

The Weldon shank with a diameter of 19.05 mm (3/4") ensures secure clamping in standard Weldon holders, improving concentricity and torque transmission on magnetic drills and milling machines. A reliable shank interface reduces runout and vibration during cutting, which in turn extends tool life and yields more accurate hole tolerances. The combination of a solid shank and HSS body provides stability during intermittent deep cutting—particularly valuable when working on structural elements such as T‑beams or large sheet assemblies.

Versatile material compatibility for workshop flexibility

This cutter is suitable for machining steel, cast iron, brass and aluminium as well as other light metals, making it a versatile addition to a mixed‑material production environment. The 55 mm cutting depth enables through-holes and deep blind holes without swapping tools, while the annular cutting principle minimises heat build-up and chip load. For users less familiar with annular cutters, note that the tool leaves a solid slug rather than chips of core material, simplifying chip evacuation and post‑process cleanup.

Practical considerations for integration and safety

Using the cutter with appropriate cutting fluid and secure clamping is recommended to maximise life expectancy and hole quality. The tool’s compact overall length of 88 mm keeps feed paths short and maintains rigidity in standard magnetic drilling setups. Given the industrial context, this annular cutter supports efficient machining workflows and reduces total machining cost per hole through faster cycle times and longer intervals between regrinds or replacements.

For workshop procurement and technical advice contact Metav Werkzeuge — order this Ruko annular cutter via Metav Werkzeuge or call +49 2822 7131930 for personalised guidance

Technical Data

• Article number: 4000602450NW
• Designation: Kernbohrer D.19mm HSS Schnitt-T.55mm Weldon RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Facts

• Diameter: 19 mm
• Cutting depth: 55 mm
• Overall length: 88 mm
• Cutting edges: 5
• Shank diameter: 19.05 mm (3/4")

Special features

• Made from high-speed steel (HSS)
• Weldon shank 19.05 mm (3/4")
• Suitable for steel, cast iron, brass and light metals

FAQ

Is this cutter suitable for use on thick steel sections?
Yes. The Kernbohrer D.19mm HSS Schnitt-T.55mm Weldon RUKO is designed for steel sections and large-format plates and provides a 55 mm cutting depth suitable for many thick materials.

Which holder is required for secure clamping of the shank?
A standard Weldon holder compatible with a 19.05 mm (3/4") shank is required to clamp the Ruko annular cutter securely for concentric, vibration‑free operation.

Can this tool be used on stainless steel or hardened materials?
The cutter is manufactured from HSS and is optimised for common steels, cast iron and non-ferrous metals; for stainless steel or hardened materials, tool selection should be verified against specific material grades and application demands.

How many cutting edges does the tool have and what benefit do they provide?
The tool features five cutting edges, which support efficient chip formation and produce cleaner bores with reduced burrs compared with fewer‑edged designs.

What is the total length of the tool and how does that affect setup?
The overall length is 88 mm, offering a stable, compact profile that maintains rigidity in magnetic drill and milling setups while allowing sufficient reach for the stated 55 mm cutting depth.

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