20mm Cylindrical Shank End Mill HSS-Co8 4 Flutes 89mm Cutting Length Right-Hand - TECWERK

Take advantage of a robust combination of HSS‑Co8 toughness, DIN 844 long‑reach geometry and a Weldon shank for secure clamping; the result is consistent milling performance and ease of integration into production. Order the cutter directly via Metav Werkzeuge or consult the Metav team for application advice.

End mill DIN 844 Type N, 20 mm – HSS‑Co8 long 4‑flute (Weldon) by TECWERK

A TECWERK end mill DIN 844 Type N engineered for long‑reach milling of steels and cast materials, featuring a centre‑cutting, 4‑flute geometry and a Weldon shank for reliable drive.

• HSS‑Co8 for enhanced heat resistance
• DIN 844 long‑reach geometry
• 20 mm diameter, 89 mm effective length
• 4‑flute centre‑cutting design
• Weldon shank with drive flat

Improved milling performance through hardened high‑speed steel

The long version in HSS‑Co8 provides a balance between toughness and red hardness, enabling steady cutting when encountering higher temperatures or intermittent feeds. Conforming to DIN 844 ensures dimensional consistency and compatibility with standard tool holding systems, while the 20 mm diameter and 89 mm effective length give a useful reach for deeper features. These characteristics result in fewer tool changes and more predictable cycle times, which supports process reliability and production planning.

Consistent chip control and surface quality for efficient throughput

The 4‑flute, centre‑cutting geometry promotes a stable cutting action and even chip formation, improving surface finish on milled faces and reducing the need for secondary operations. The right‑hand cutting direction and the specified helix profile contribute to controlled chip evacuation in through‑cuts and pockets. In practice, this means shorter machining cycles for components that demand consistent tolerances and a reduced risk of recutting chips, enhancing overall shop efficiency.

Wide application range with clear material guidance

Material suitability is a core advantage: the tool is very well suited for steel and cast iron, while non‑ferrous metals and stainless steel are conditionally suitable depending on cutting data and workpiece temper. As an uncoated tool produced from cobalt‑alloy high‑speed steel, it offers excellent toughness for interrupted cuts and roughing passes. For applications approaching higher tensile strengths, consider coated alternatives; with coating, capability can extend toward the upper limits stated by tooling suppliers.

Secure clamping and practical workshop handling

The cylindrical shank with a Weldon drive flat provides reliable torque transmission and repeatable concentricity when mounted in a compatible holder or chuck. The long‑reach design facilitates machining of deeper pockets and profiles without complex setups, while still allowing for straightforward resharpening when required. If clarification is needed on feed, speed or holder compatibility, Metav Werkzeuge provides technical advice from its Emmerich centre; contact details are supplied below for specification support and procurement logistics.

Contact Metav Werkzeuge for delivery from Emmerich and expert application advice on TECWERK milling tools; phone +49 2822 7131930 or eMail info@metav-werkzeuge.com

Technical data

• SKU: 2000866390NW
• Standard: DIN 844
• Brand: TECWERK
• Material: HSS‑Co (HSS‑Co8)

Numbers / core technical data

• Diameter: 20 mm
• Shank diameter: 20 mm
• Overall length: 141 mm
• Effective cutting length: 89 mm
• Number of flutes: 4
• Relief length (free‑grind): 19 mm
• Cutting direction: Right‑hand

Designs / special features

• DIN 844 Type N, long version
• Centre cutting (Zentrumschnitt)
• 4‑flute (Vierschneider) geometry
• Weldon shank / drive flat (Mitnahmefläche)
• Suitable for steel: very well suited
• Suitable for cast iron: very well suited
• Suitable for non‑ferrous metals: conditionally suited
• Suitable for stainless (INOX): conditionally suited

FAQ

What machining tasks is this long DIN 844 end mill best suited for?
This TECWERK end mill (DIN 844 Type N, SKU 2000866390NW) is designed for longer‑reach milling of steel and cast iron, especially where a 20 mm diameter tool with extended effective length is required.

Can the cutter be used on stainless steel and aluminium?
The tool is conditionally suitable for stainless steel and non‑ferrous metals; cutting data and workpiece condition determine optimal performance, and adjustments to feed and speed are recommended for best results.

Is the shank compatible with standard Weldon holders?
Yes. The Weldon shank with drive flat is intended for secure clamping in holders that accept a Weldon‑style fixing, ensuring repeatable torque transmission.

How many flutes does the cutter have and what does that mean for chip evacuation?
The 4‑flute geometry provides a balance between material removal rate and surface finish; it offers good chip control for moderate‑depth cuts while maintaining a fine machined surface.

Does the tool come coated?
This specific item is supplied uncoated in HSS‑Co8; coatings can improve wear resistance and extend capability toward higher tensile materials where applicable.

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