20mm Solid Carbide HSS-Co 4-Flute End Mill 52mm Effective Length, DIN 844 HR Short Weldon Shank - TECWERK

Take advantage of the combination of robust HSS‑Co5 construction, a short four‑flute centre‑cut geometry and a secure Weldon shank for dependable milling performance and reduced setup time. Order directly via Metav Werkzeuge or consult our specialists for application-specific recommendations.

TECWERK HSS‑Co5 DIN 844 Type HR end mill, Ø 20 mm, Weldon shank

The TECWERK HSS‑Co5 end mill is a short, four‑flute, centre‑cutting cutter designed for stable slotting and face milling in steel and cast iron applications

• HSS‑Co5 short four‑flute design
• Centre‑cut for plunge milling
• Weldon shank for secure clamping
• Suited for steel and cast iron

High‑performance geometry for predictable results

The tool combines a four‑flute configuration with a back‑relieved fine helical profile, providing a balance between chip evacuation and surface finish. The centre‑cut capability allows plunge starts without pre‑drilling, making the cutter suitable for operations where controlled entry is required. Manufactured to DIN 844 as a Type HR short cutter, the geometry is optimised for stable cutting forces and reduced chatter when paired with an appropriate feed and speed setting. The HSS‑Co5 composition offers improved hot hardness compared with standard high‑speed steel, which supports consistent cutting when machining tougher steels and cast materials.

Short overall length and Weldon shank for machining stability

With a compact design and a Weldon (TW) shank, the cutter provides reliable clamping and torsional resistance in standard toolholders. The combination of Ø 20 mm diameter and a 52 mm effective length keeps overhang minimal, reducing deflection in shoulder milling and slotting tasks. A 45° chamfer and a refined relief grind contribute to predictable tool engagement and easy insertion into fixtures. These mechanical choices are intended to shorten setup times and maintain repeatable part tolerances in serial production or repair work.

Clear indications for material use and application

The cutter is supplied uncoated and is rated for machining materials up to approximately 800 N/mm² in strength in its uncoated state; coated variants can extend capability to around 1,200 N/mm². The tool shows very good suitability for steel and cast iron, while non‑ferrous metals are conditionally suitable depending on feed, speed and chip management. For best results in demanding steels, adjust feed per tooth and cooling strategy to match the HSS‑Co5 performance characteristics. The short flute length and centre‑cut design make the tool particularly useful for spot‑facing, small‑depth shoulder milling and interrupted cuts where a robust entry geometry is beneficial.

Contact Metav Werkzeuge for tailored machining advice on the TECWERK HSS‑Co5 end mill and expert support with tooling choices; call +49 2822 7131930 or email info@metav-werkzeuge.com

Technical data

• SKU: 2000866504NW
• Standard: DIN 844
• Manufacturer: TECWERK
• Product type: End mill (Type HR)
• Material: HSS‑Co5

Facts

• Diameter: 20 mm
• Overall length: 104 mm
• Effective length: 52 mm
• Cutting length: 4 mm
• Flutes: 4
• Shank diameter: 20 mm

Special features

• Weldon (TW) cylindrical shank with drive flat
• Centre‑cut for plunge capability
• Right‑hand cut
• 45° chamfer
• Back‑relieved fine helical profile
• Short design for reduced overhang
• Uncoated
• Suitable: steel (very good), cast iron (very good), non‑ferrous metals (conditionally)
• Rated for materials up to ~800 N/mm² uncoated

FAQ

Is this cutter suitable for plunge milling and pocket entry? The TECWERK HSS‑Co5 end mill is centre‑cut, which permits plunge starts and controlled pocket entry without pre‑drilling.

Which materials are best machined with this tool? The tool is optimised for steel and cast iron; the HSS‑Co5 composition supports demanding ferrous workpieces, while non‑ferrous materials can be machined under adjusted conditions.

How does the Weldon shank benefit clamping? A Weldon (TW) shank provides a secure mechanical drive with reduced slippage in set‑screw toolholders, improving torque transmission for the 20 mm cutter.

Can this end mill handle interrupted cuts? Yes, the short design and robust geometry of the cutter make it well suited to interrupted cuts and operations with variable engagement.

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