20mm Solid Carbide End Mill DIN 844 Type N Long 4-Flute With Weldon Shank HSS-Co8 - TECWERK

Take advantage of a robust cutting solution that combines HSS‑Co8 toughness and a Weldon shank for secure clamping, delivering consistent performance in demanding milling tasks; order directly via Metav Werkzeuge or consult the team for application-specific guidance.

End mill DIN 844 Type N, D 20 mm, cutting length 89 mm — Long HSS‑Co8, 4‑flute cutter by TECWERK

An End mill DIN 844 Type N engineered for deep and precise side milling in steel and cast iron applications

• HSS‑Co8 high‑speed steel for extended life
• DIN 844 Type N four‑flute, centre‑cutting
• Weldon shank with drive flat for secure hold
• Suitable for steel and cast iron machining

High endurance material and defined strength limits for predictable performance

The tool is manufactured from HSS‑Co8 (high‑speed steel with 8% cobalt), providing enhanced heat resistance and wear performance compared with conventional high‑speed steels. Conforming to DIN 844, the cutter is centre‑cutting, which allows plunge operations as well as side milling. The specification states suitability for materials up to ~800 N/mm² with an uncoated tool and up to ~1200 N/mm² when a coating is applied, giving clear guidance for selecting cutting parameters and tool life expectations.

Secure clamping and reliable cutting behaviour for consistent surface finish

A Weldon shank with a drive flat assures positive torque transmission in collets and tool holders, reducing slippage under high axial loads. The four‑flute geometry provides a favourable balance between feed per tooth and surface finish, while the 89 mm cutting length supports deeper passes where necessary. As a right‑hand cutting tool, the geometry promotes stable chip formation and predictable cutting forces, which in turn helps maintain toolpath accuracy and reduces secondary finishing.

Application spectrum and recommended workshop uses

This long, four‑flute cutter is especially suitable for production and repair environments where steel and cast iron are processed frequently; these materials are marked as very well suited. Non‑ferrous metals and stainless steels are described as conditionally suitable, so machining strategy should be adapted—lower feeds or intermittent cutting may be advisable. For job shops, CNC mills and maintenance workshops seeking a versatile, long‑reach solution, this cutter delivers a combination of durability and geometry that supports efficient material removal and good edge quality. If application‑specific data or cutting parameters are required, technical assistance is available to ensure optimal setup.

Discuss material suitability and procurement with Metav Werkzeuge to secure the correct TECWERK long end mill for the intended application and to arrange delivery from Emmerich.

Technical data

• Article number: 2000866390NW
• Designation: End mill DIN 844 Type N, D 20 mm, cutting length 89 mm
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Diameter: 20 mm
• Cutting length: 89 mm
• Number of flutes: 4
• Material grade: HSS‑Co8
• Shank type: Weldon (drive flat)
• Cutting direction: Right‑hand

Special features

• Four‑flute (Vierschneider)
• Centre‑cutting geometry (Zentrumschnitt)
• Cylindrical shank with drive flat
• Long design for deep milling
• Suitable for materials ≤ ~800 N/mm² uncoated, ≤ ~1200 N/mm² coated
• Material suitability: Steel – very well suited; Cast iron – very well suited; Non‑ferrous metals – conditionally suitable; Stainless steel – conditionally suitable

FAQ

What materials is this long end mill best suited for? The TECWERK end mill (DIN 844 Type N, D 20 mm) is very well suited for steel and cast iron; non‑ferrous and stainless steels are conditionally suitable and may require adapted cutting parameters.

Can the cutter be used for plunge milling? Yes, the centre‑cutting geometry permits plunge operations as well as conventional side milling with the DIN 844 Type N profile.

How does the Weldon shank benefit clamping? The Weldon shank with drive flat provides positive torque transfer and reduces the risk of slippage in standard tool holders, improving repeatability under load.

What are the recommended strength limits for workpiece selection? The specification indicates up to approximately 800 N/mm² for uncoated tools and up to approximately 1200 N/mm² if a suitable coating is applied, guiding material choice and tool life expectations.

Is this tool suitable for CNC milling centres? Yes, the long 4‑flute geometry and robust HSS‑Co8 composition make it appropriate for CNC mills in production and maintenance environments.

Manufacturer / Responsible: Teknik Cutting Tools, Buyukkayacık OSB Mah.422 Nolu Sokak.No:9, Selcuklu/KONYA/TURKEY / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; +49 2822 7131930; eMail: info@metav-werkzeuge.com