8mm Cylindrical Shank HSS-Co Cutters 25mm Effective Length 4-Flute Right-Hand, DIN 844 - TECWERK

Take advantage of the combination of HSS‑Co5 durability, a four‑flute geometry and a secure Weldon shank for reliable short‑run milling; order the cutter directly via Metav Werkzeuge or consult the team if required

TECWERK End Mill DIN 844 Type HR Ø 8 mm (HSS‑Co5) — Weldon shank, 4‑flute

TECWERK End Mill DIN 844 Type HR Ø 8 mm (HSS‑Co5) is a short, four‑flute, centre‑cutting end mill designed for efficient milling of steel and cast iron in workshop and production environments

• Short HSS‑Co5 geometry for tough cuts
• Four‑flute design for steady surface finishes
• Weldon shank with drive flat for secure clamping
• Centre‑cutting for plunge and slot milling

High performance for demanding steels and castings

The cutter is made from HSS‑Co5, delivering improved red hardness and wear resistance compared with standard high‑speed steel; this means consistent performance when machining ferrous materials. With suitability rated very good for steel and very good for cast iron, the tool enables stable metal removal where toughness and edge retention matter. The data indicate capability up to ≈800 N/mm² with an uncoated tool and up to ≈1200 N/mm² when a coated grade is chosen, supporting a broader process window for mixed production runs.

Geometry that improves productivity and finish

A four‑flute configuration combined with a centre‑cutting geometry provides an effective balance between chip evacuation and axial engagement, allowing plunge cuts and slotting without additional tool changes. The short design with a 25 mm effective length and a compact profile reduces chatter and increases rigidity, which benefits cycle time and surface quality on vertical milling operations. The relieved fine helix profile helps direct chips away from the cutting zone while preserving a clean machined surface.

Secure clamping and simple handling for workshop use

The cylindrical shank with a Weldon drive flat ensures firm clamping in standard holders and milling arbors, reducing the risk of slippage under intermittent loads. A shank diameter of 10 mm with an overall length of 69 mm keeps the tool compact for setups where space is limited. Right‑hand cutting and a protective 45° chamfer on the tip improve tool life in repetitive processes, making the cutter a practical choice for machining centres and manual mills alike.

Practical applications and material guidance

This short, four‑flute end mill is optimised for machining structural and hardened steels, and it is particularly suited to cast components where stable tool edges are required. The tool is conditionally suitable for non‑ferrous metals, so process validation is recommended when aluminium or brass workpieces form the bulk of production. For mixed operations that include tougher steels, choosing a coated variant can extend workable strength ranges and reduce regrinding frequency.

Contact Metav Werkzeuge in Emmerich for tailored advice on tooling setups, variant selection and availability — the Metav team can assist with technical questions and order coordination

Technical data

• Article number: 2000866492NW
• Norm: DIN 844
• Manufacturer: TECWERK
• Product type: End mill (short, Type HR)

Facts

• Diameter: 8 mm
• Shank diameter: 10 mm
• Effective length: 25 mm
• Cutting length: 4 mm
• Overall length: 69 mm
• Number of flutes: 4
• Relief clearance (mm): 7.5

Special features

• Material: HSS‑Co5
• Type HR, short design
• Four‑flute, centre‑cutting
• 45° protective chamfer
• Relieved fine helix profile
• Cylindrical shank with drive flat (Weldon)
• Right‑hand cutting
• Uncoated (coated variants recommended for higher strength ranges)
• Suitable: steel (very well), cast iron (very well), non‑ferrous metals (conditionally)
• Packaging unit: 1

FAQ

What range of materials is this cutter best suited for?
The TECWERK end mill (Type HR, Ø 8 mm) is rated very well for steel and cast iron, with conditional suitability for non‑ferrous metals.

Can this cutter be used for plunge milling?
Yes, the centre‑cutting geometry and four‑flute design permit plunge operations and slotting with the appropriate feeds and speeds.

What shank system does the tool use for clamping?
The tool features a Weldon shank with a drive flat, providing secure clamping in standard holders and reducing slippage risk during heavy cuts.

Is there a coated version for higher strength materials?
The tool is supplied uncoated; however, a coated variant is advisable when machining materials approaching ≈1200 N/mm², as coatings extend usable strength ranges.

Which DIN standard does the cutter conform to?
The cutter complies with DIN 844, Type HR specifications for short end mills.

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