20mm Core Drill Groove Cutter HSS-Co8 TiCN Weldon 3-Flute Long Right-Hand, DIN 844 - TECWERK

Take advantage of a tough HSS‑Co8 core with TiCN surface protection and a rigid Weldon shank for reliable slotting and keyway work in production environments; order the cutter directly via Metav Werkzeuge or consult our specialists for application advice.

TECWERK Slot Drill DIN 844 Type N, D 20 mm — HSS‑Co8, TiCN, Weldon shank

A TECWERK long slot drill designed for plunge and slot milling in steels and stainless steel, with a three‑flute, centre‑cut geometry and a 20 mm Weldon shank for secure clamping

• HSS‑Co8 construction for high wear resistance
• TiCN coating for extended tool life
• Weldon shank with drive flats for secure clamping

Precision and performance for slotting in demanding materials

The long slot cutter combines a HSS‑Co8 substrate with a TiCN coating to balance toughness and surface hardness; this mix supports heavy‑duty cutting and improved wear resistance when machining medium‑strength materials. The three‑flute geometry increases rigidity compared with two‑flute cutters while leaving adequate space for chip evacuation, and the centre‑cut design permits controlled axial engagement for plunge operations. These characteristics make the tool particularly suited to repetitive production work where tool life and dimensional stability matter.

Secure clamping and effective chip control for deep cuts

A Weldon shank with drive flats and a substantial 20 mm shaft diameter ensure secure retention in compatible toolholders, reducing slippage during heavy cuts and long overhangs. The long flute length allows deeper slotting and keyway formation without sacrificing stability. Combined with the cutter’s geometry, the design promotes consistent chip formation and evacuation, which helps maintain surface finish and reduces heat buildup in longer machining cycles.

Material suitability and cutting capability explained

The cutter is specified for machining low to medium strength materials up to around 800 N/mm² with an uncoated tool, and up to 1000 N/mm² when the TiCN coating is present; this expands its usable range to many steels and stainless steels. Suitability notes indicate very good performance on steel, stainless steel and cast iron, with conditional capability on non‑ferrous metals and special alloys. These distinctions help planners select the correct tool for production mixes and determine when coated versions are advantageous.

Practical benefits for workshop and production use

Conforming to DIN 844 Type N, the cutter delivers repeatable dimensions and compatibility with standard holders. The combination of centre‑cut capability, robust substrate and coating leads to fewer tool changes and stable tolerances in serial work. For workshops aiming to centralise tooling procurement, this tool supports consistent slot and keyway operations while reducing the need for frequent rework. The cutter’s tolerances (select diameters in h10, others e8) provide clarity for machining to fit and assembly requirements.

Contact Metav Werkzeuge for procurement and technical guidance on the TECWERK long slot drill — Metav’s specialists in Emmerich ensure reliable supply and application support, eMail info@metav-werkzeuge.com or phone +49 2822 7131930

Technical Data

• Article number: 2000866264NW
• Product: Bohrnutenfräser DIN 844 Typ N D.20mm HSS‑Co8 TiCN Weldon Z.3 lang TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Shank diameter: 20 mm
• Flute free length: 19 mm
• Number of cutting edges: 3
• Nominal diameters: 9, 11, 13, 15 mm (tolerance h10); remaining sizes tolerance e8
• Material hardness suitability: up to 800 N/mm² uncoated; up to 1000 N/mm² coated

Special features

• HSS‑Co8 substrate
• TiCN coating
• DIN 844 Type N
• Centre‑cut for axial plunging
• Weldon shank with drive flats
• Right‑hand cutting
• Long version for deeper slots
• Very good for steel, stainless steel and cast iron
• Conditionally suitable for non‑ferrous metals and special alloys

FAQ

Is this cutter suitable for stainless steel applications?
Yes. The TECWERK slot drill with TiCN coating and HSS‑Co8 core is specified as very well suited to stainless steel, enabling stable performance in routine slotting and keyway operations.

Can the cutter be used for plunge cutting into a blind pocket?
Yes. The centre‑cut geometry permits axial engagement, so the long slot drill can perform controlled plunging as well as conventional slot milling.

What clamping systems accept the 20 mm Weldon shank?
The 20 mm Weldon shank is intended for holders and toolposts that accept Weldon‑style shanks with drive flats; this provides secure retention during heavy or long‑reach cutting tasks.

Which materials will the cutter handle best?
The cutter is optimised for steel, stainless steel and cast iron. It is conditionally suitable for non‑ferrous metals and certain special alloys, with coating improving capability in harder materials.

How does the TiCN coating change performance?
The TiCN coating increases surface hardness and wear resistance, allowing use on higher strength materials (up to about 1000 N/mm² coated), and often extends service life in abrasive or adhesive cutting conditions.

Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund