4mm Mini Slot Cutter HSS-Co8 3-Flute Short With Weldon Shank, Centre Cut - TECWERK

Benefit from the combination of HSS‑Co8 wear resistance, a 4 mm cutting diameter and a short Weldon shank for rigid, repeatable micro-slotting; order directly via Metav Werkzeuge or consult their specialists for application advice.

TECWERK Mini slot milling cutter D 4 mm, HSS‑Co8 – 3‑flute, Weldon shank (short)

The TECWERK Mini slot milling cutter D 4mm HSS‑Co8 is a short, three‑flute, centre‑cutting tool designed for precise slotting and small‑scale milling in workshop and industrial settings.

*HSS‑Co8 construction for high wear resistance
*3‑flute geometry with centre cutting for plunge milling
*Suitable for steel and cast iron up to 800 N/mm²
*Short Weldon shank, 6 mm shank diameter

Precision micro‑slotting with high‑temperature hardness

The mini slot cutter is engineered from HSS‑Co8 (high‑speed steel with 8% cobalt), which increases hot hardness and wear resistance during interrupted cuts and elevated temperatures. With a 4 mm nominal diameter and 3‑flute geometry featuring a centre cutting edge, the tool enables direct plunge operations and tight slot widths while maintaining surface quality. Because the cutting edge is designed for materials of low to medium tensile strength up to ≈800 N/mm², machinists obtain repeatable results when working on carbon steels and many cast iron grades. The combination of cobalt‑alloyed high‑speed steel and a compact geometry reduces the risk of premature abrasion and supports longer tool life under appropriate cutting conditions.

Short design and secure clamping for reduced deflection

A short fluted length improves stiffness and reduces deflection when producing small slots or performing edge milling. The Weldon shank with a drive flat and a 6 mm shank diameter ensures secure clamping in standard holders and collets, improving concentricity and minimising runout. The right‑hand cutting direction and the three‑cutting‑edge arrangement distribute cutting forces evenly, which helps to produce consistent slot widths and a superior surface finish in short, precise passes. For bench‑level toolmaking, repair work or small series production, the reduced tool overhang allows higher stability and more accurate depth control compared with longer micro cutters.

Practical applications and material guidance for workshop use

This short mini cutter is particularly suitable for precise slotting and milling in steel and cast iron, where its very good suitability yields efficient material removal with good edge quality. Performance on stainless steel and non‑ferrous metals is conditional; stainless steels require adjusted cutting parameters and careful attention to chip evacuation, while some non‑ferrous alloys may need specific feeds to avoid built‑up edge. The tool is ideal for mould and die maintenance, prototype work, small component finishing and any application demanding tight tolerances in narrow slots. For safe and efficient use, pair the cutter with rigid toolholding, appropriate coolant or air blast where chip control is critical, and moderate axial depths consistent with its short form factor.

For reliable micro‑slot machining select TECWERK cutting tools via Metav Werkzeuge and benefit from application advice and fast supply from Emmerich — contact Metav Werkzeuge for technical consultation at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 2000866008NW
• Item designation: Minibohrnutenfräser D.4mm HSS‑Co8 Weldon Z.3 kurz TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Cutting diameter: 4 mm
• Shank diameter: 6 mm
• Number of flutes: 3
• Material: HSS‑Co8 (8% cobalt high‑speed steel)
• Cutting type: centre cutting, right‑hand
• Recommended material strength: up to approx. 800 N/mm²

Features / Applications

• Short form for increased rigidity
• Weldon shank with drive flat
• Designed for plunge milling and slotting
• Very good suitability for steel
• Very good suitability for cast iron
• Conditional suitability for stainless steel (INOX) and non‑ferrous metals
• Intended for materials of low and medium tensile strength

FAQ

Is this cutter suitable for plunge cutting?
Yes. The cutter features a centre cutting geometry and three flutes, which allows plunge milling and direct entry into material when using appropriate feeds and speeds.

Which materials does the tool perform best on?
The tool is optimised for steel and cast iron, exhibiting very good suitability on these materials; stainless steels and many non‑ferrous metals are only conditionally suitable and may require adjusted machining parameters.

What is the shank size and clamping requirement?
The tool has a 6 mm shank with a Weldon drive flat; secure clamping in a compatible Weldon holder or collet is recommended to minimise runout.

Can the cutter machine hardened steel?
The cutter is intended for materials up to approximately 800 N/mm² tensile strength; it is not specified for high‑hardness applications beyond that range.

Which item should be referenced when ordering spare cutters?
Reference the article number 2000866008NW and the product designation when ordering to ensure the correct short, 3‑flute, HSS‑Co8 Weldon tool is supplied.

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