28mm Core Drill HSS 55mm Cutting Depth Weldon Shank 3/4" - Ruko GmbH

High-performance HSS construction and a 55 mm cutting depth provide efficient, repeatable holemaking; the Weldon 19.05 mm (3/4") shank ensures secure clamping for stable machining. Order the RUKO annular cutter directly from Metav Werkzeuge or consult the team for detailed application advice.

RUKO Annular Cutter D 28 mm HSS — 55 mm cutting depth, Weldon 3/4" shank

The RUKO annular cutter is engineered for fast, material-efficient through-hole cutting in steels, cast iron and a wide range of non-ferrous and light metals.

• High-performance HSS construction
• 55 mm effective cutting depth
• Weldon 3/4" shank for secure clamping
• Suitable for steel, cast iron and non-ferrous metals

Faster, cleaner holes with less material removal

The annular design removes a narrow ring of material rather than the entire core, which reduces drilling time and power draw while producing consistent hole diameters. Made from HSS, the tool holds its edge under intermittent heavy loads and resists heat better than standard high-speed alternatives. With a 28 mm diameter and a 55 mm cutting depth, the cutter is suited to demanding workshop tasks that require reliable, repeatable results and reduced rework.

Secure mounting and stable machining for accurate results

A Weldon 19.05 mm (3/4") shank gives firm clamping in compatible holders, minimising slippage and runout during cutting. This mechanical fit simplifies tool changes and maintains concentricity for clean finishes on the workpiece. The combination of secure shank interface and precise rim geometry supports predictable chip evacuation and steady feed rates, which in turn helps maintain surface quality and hole tolerance in mixed-metal fabrication.

Robust performance across common workshop materials

Suited to structural steels (including T‑sections and large plates), cast iron and a variety of non-ferrous alloys, the cutter balances cutting life and edge stability. The multi-edge design reduces vibration and distributes wear, extending service intervals compared with single-point drills in comparable tasks. For operations focusing on throughput and repeatability, the tool contributes to stable production processes and eases tool management on the shop floor.

For precise through-hole cutting and reliable workshop supply, contact Metav Werkzeuge in Emmerich to discuss the RUKO annular cutter (SKU 4000602459NW) and arrange prompt delivery or technical guidance via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 4000602459NW
• Manufacturer: Ruko GmbH

Facts

• Diameter: 28 mm
• Cutting depth: 55 mm
• Total length: 88 mm
• Shank: 19.05 mm (3/4")
• Cutting edges: 7

Special features

• Material: HSS
• Shank type: Weldon
• Suitable for: steel, cast iron, non-ferrous and light metals
• Product type: annular cutter

FAQ

What materials is this cutter suitable for?
The RUKO annular cutter is designed for steel (including structural plates), cast iron and a range of non-ferrous and light metals, providing consistent performance across these materials.

What is the shank type and size?
The cutter features a Weldon shank with a diameter of 19.05 mm (3/4"), offering secure clamping in compatible tool holders for stable machining.

How deep can this cutter drill in one pass?
The tool provides a cutting depth of 55 mm, which allows efficient through-hole creation within that effective depth.

How many cutting edges does the tool have?
This annular cutter is supplied with seven cutting edges to distribute cutting forces and improve tool life.

Is the cutter suitable for heavy workshop use?
Constructed from HSS and built for metalworking, the cutter offers robustness for regular workshop operations when used within its specified material range.

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