20mm Long HSS-Co5 TiCN-Coated End Mill, 89mm Effective Length, DIN 844 HR, 4-Flute, Weldon - TECWERK

Benefit from a durable HSS‑Co5 substrate, low‑friction TiCN coating and a secure Weldon shank for dependable performance; order the End mill DIN 844 Type HR Ø 20 mm directly via Metav Werkzeuge or consult our specialists for application support.

End mill DIN 844 Type HR Ø 20 mm — HSS‑Co5, TiCN‑coated long cutter by TECWERK

The End mill DIN 844 Type HR Ø 20 mm is a long, four‑flute, centre‑cutting end mill designed for robust milling tasks in steel and cast components up to approximately 1200 N/mm².

• HSS‑Co5 substrate, TiCN coating
• DIN 844 Type HR long version
• Weldon shank with drive flat
• Excellent for steel and cast materials

Reliable machining performance for production environments

This tool delivers consistent chip evacuation and stable cutting thanks to its 4‑flute geometry and long effective length. The Ø 20 mm diameter combined with an 89 mm effective length allows deeper engagements while maintaining tool rigidity, which reduces chatter and rework. The result is higher net throughput and fewer tool changes, translating into measurable process efficiency for workshops and production lines that require dependable repeatability.

Coating and core material for extended tool life

The combination of HSS‑Co5 core material and a TiCN coating improves wear resistance and reduces built‑up edge during intermittent or harder cuts. The coating lowers friction and helps maintain cutting edge integrity when machining tougher steels. In practice this means longer intervals between regrinds and fewer unexpected tool failures, supporting leaner inventory and lower total cost of ownership for precision machining operations.

Geometry and shank design that prioritise stability

Engineered as DIN 844 Type HR, the cutter features a Weldon shank (TW) with a drive flat for secure clamping in holders and reduced slippage under torque. The tool’s centre‑cutting ability permits plunge starts, while the 45° protective chamfer and a fine relieved cord profile assist in smooth entry and reduced burr formation. These design choices improve process reliability when working on complex contours or interrupted surfaces.

Application range and material suitability explained

This long end mill is very well suited to steel and cast iron, and it performs under demanding conditions up to around 1200 N/mm². It is conditionally suitable for non‑ferrous metals, stainless steel and special alloys, depending on the specific grade and cutting parameters. For applications in aluminium or softer materials, adjustments to feeds and speeds are recommended to avoid excessive build‑up. For highest productivity, pair the cutter with appropriate coolant strategies and stable fixturing.

Choose TECWERK’s robust HSS‑Co5, TiCN‑coated end mill for consistent milling results—contact Metav Werkzeuge for tailored technical advice and secure supply from our Emmerich location.

Technical data

• SKU: 2000866560NW
• Standard: DIN 844
• Product type: End mill

Core dimensions

• Diameter: 20 mm
• Overall length: 141 mm
• Effective length: 89 mm
• Cutting length: 4 mm
• Shank diameter: 20 mm
• Flutes: 4

Materials & features

• Material: HSS‑Co5
• Coating: TiCN
• Weldon shank (TW)
• Right‑hand cutting, centre‑cutting
• 45° protective chamfer, fine relieved cord profile
• Very suitable for steel and cast iron; conditionally suitable for non‑ferrous metals, special alloys and stainless steel

FAQ

What materials is this cutter best suited for?
The TECWERK End mill DIN 844 Type HR Ø 20 mm is very well suited to steel and cast iron, with conditional suitability for non‑ferrous metals, stainless steel and special alloys depending on cutting parameters.

Can the tool be used for plunge milling?
Yes, the tool is centre‑cutting, which permits plunge operations as long as appropriate feeds and speeds are observed for the material being machined.

How does the TiCN coating help in daily use?
The TiCN coating reduces friction and wear, improving edge life and lowering the tendency for built‑up edge, especially when machining harder steels.

Is the Weldon shank suitable for heavy machining?
The Weldon shank (TW) with drive flat ensures secure clamping and resistance to rotational slip, supporting stable cutting under higher torque loads.

What tool maintenance is recommended to extend service life?
Periodic inspection, regrinding by a qualified service and correct coolant application will extend the cutter’s service life; for specific regrind parameters consult Metav Werkzeuge’s technical team.

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