20mm Long Shank HSS-Co8 TiCN 4-Flute Cylindrical End Mill 89mm Cutting Length, DIN 844 – TECWERK

Take advantage of a high-performance combination of HSS‑Co base material and TiCN coating for extended tool life and higher machining rates; benefit from a secure Weldon shank for stable clamping and consistent surface finish. Order the cutter directly via Metav Werkzeuge or consult the technical team for application-specific advice.

Schaftfräser D844 TypN D.20mm Einsatz-L.89mm HSSCo8 TiCN Weldon Z.4 lang — long HSS‑Co end mill with TiCN coating and Weldon shank

Schaftfräser D844 TypN D.20mm Einsatz-L.89mm HSSCo8 TiCN Weldon Z.4 lang is a long, four‑flute end mill designed for demanding axial and peripheral milling in steels and stainless steels, compliant with DIN 844 Type N.

• HSS‑Co8 body with TiCN coating
• Centre‑cut geometry for plunge milling
• Weldon shank for secure clamping
• Compliant with DIN 844 Type N

High endurance cutting for longer runs and higher productivity

The combination of HSS‑Co (cobalt‑alloyed high‑speed steel) and TiCN coating offers a balance of toughness and wear resistance that suits extended production runs. The 20 mm cutting diameter together with an effective length of 89 mm gives a long reach while maintaining sufficient core strength to resist deflection. The TiCN layer reduces friction and increases thermal resistance so that machining rates can be raised compared with uncoated high‑speed cutters; at the same time, tool life is extended, which lowers overall production costs per part. Compliance with DIN 844 signals standardised dimensions and flank geometry for reliable replacement and integration into existing tool inventories.

Precise plunge and slotting capability for versatile machining tasks

Designed as a centre‑cut tool with 4‑flute geometry and right‑hand cutting, the cutter enables plunge operations as well as axial and peripheral milling. The centre‑cut feature allows safe entry into the material without pre‑drilling, simplifying set‑up and reducing cycle times for pocketing and slotting. Material suitability is optimised for common workshop demands: very good for steel, very good for stainless steel (INOX) and very good for cast iron, while non‑ferrous metals and special alloys are to be considered with restricted conditions. This clear material guidance supports selection for the right application and contributes to predictable process planning.

Stable clamping and run for consistent surface quality

A cylindrical shank with Weldon flat ensures reliable torque transfer and secure clamping in a Weldon‑style holder, reducing slippage during heavy cuts and helping to maintain concentricity over long tool overhangs. With a total length of 141 mm and a shank diameter of 20 mm, the tool is intended for long‑reach operations where stability is crucial to avoid chatter and to deliver repeatable surface finish. The DIN 844 Type N form factor and the Weldon drive flat together create a practical combination for CNC milling centres and milling heads where axial reach and secure mounting are priorities. For complex applications, the manufacturer’s specifications should be matched to machine power and fixturing to achieve the best results.

For demanding milling tasks, choose the TECWERK long HSS‑Co end mill with TiCN coating and contact Metav Werkzeuge for tailored advice — eMail: info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000866412NW
• Label: Schaftfräser D844 TypN D.20mm Einsatz-L.89mm HSSCo8 TiCN Weldon Z.4 lang
• Manufacturer: TECWERK

Specifications

• Diameter: 20 mm
• Effective length: 89 mm
• Total length: 141 mm
• Shank diameter: 20 mm
• Cutting length: 4 mm
• Number of cutting edges: 4
• Relief clearance (freischliff): 19 mm
• Standard: DIN 844
• Cutting direction: right‑hand

Special features

• Material: HSS‑Co (HSS‑Co8)
• Coating: TiCN
• Type: DIN 844 Type N, long
• Geometry: centre‑cut, four‑flute
• Shank: cylindrical with Weldon flat
• Suitability steel: very good
• Suitability stainless steel (INOX): very good
• Suitability cast iron: very good
• Suitability non‑ferrous metals: limited
• Suitability special alloys: limited

FAQ

What materials is this end mill best suited to machine?
The Schaftfräser D844 TypN D.20mm Einsatz‑L.89mm HSSCo8 TiCN Weldon Z.4 lang is rated very good for steel, stainless steel and cast iron; non‑ferrous metals and special alloys are only conditionally suitable.

Can the cutter be used for plunge milling?
Yes, the centre‑cut geometry gives the cutter safe plunge capability for direct axial entry into the workpiece, simplifying pocketing and slotting operations.

What clamping interface is required for secure mounting?
A Weldon‑style holder or a clamp capable of engaging the Weldon flat is recommended to ensure secure torque transmission and to prevent slippage with the cylindrical shank.

Does the TiCN coating affect maximum allowable workpiece strength?
The TiCN coating increases wear resistance so that the tool can handle higher material strengths compared with the uncoated grade; coated operation allows machining up to higher tensile strengths under suitable cutting conditions.

Which standard ensures interchangeability with other long end mills?
The cutter conforms to DIN 844 Type N, which provides standardised dimensions and geometry for long‑reach end mills of this style.

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