12mm Corner Radius Cutter DIN 844 Type N HSS-Co8 3-Flute Long Centre Cut, Weldon Shank - TECWERK

Take advantage of the combination of high‑alloy HSS‑Co8 construction, a Weldon shank for secure clamping and a three‑flute long geometry to keep slot milling efficient and reliable; order the slot drill directly via Metav Werkzeuge or consult the Metav team for coating and diameter recommendations

Slot Drill DIN 844 Type N, 12 mm — HSS‑Co8, Weldon Shank (TECWERK)

The Slot Drill DIN 844 Type N is a long, three‑flute cutter engineered for plunge and slot milling in medium‑strength materials, featuring a Weldon shank for positive drive and centre‑cutting capability

• HSS‑Co8 high‑alloy steel for extended tool life
• Three‑flute long design with centre cutting
• Weldon shank with drive flat for secure clamping
• Very good for steel and cast‑iron machining

Faster, more reliable slotting with high‑alloy steel

The long three‑flute geometry manufactured in HSS‑Co8 provides a balance of toughness and wear resistance that benefits continuous production. Because the cobalt content increases red hardness, the cutter maintains cutting performance at higher temperatures; this translates into longer tool life and fewer interruptions for tool changes. The designation to machine materials up to 800 N/mm² when uncoated (and up to 1000 N/mm² when coated) gives a predictable capability range for planning cycle times. Such clarity in capability helps reduce unplanned downtime and supports consistent output in series production.

Secure clamping and positive drive for consistent accuracy

The cylinder shank with Weldon drive flat ensures a stable connection to the toolholder; clamping force is transferred reliably, reducing the risk of slippage under load. With a shaft Ø 12 mm and a free cutting length of 11.5 mm, the cutter is dimensioned for stable engagement during slotting operations. The centre‑cutting configuration enables controlled plunging, while the three‑flute layout improves chip evacuation compared with full‑section cutters, helping to maintain surface finish and reduce recutting of chips — a practical advantage for moderate‑depth keyways and slots.

Clear material guidance for process planning

Material suitability is specified to support informed tool selection: very good for steel and cast iron, conditionally suitable for stainless steel (INOX) and non‑ferrous metals. These classifications assist production planners in choosing the correct tool or deciding where a coated variant might be required. The cutter is right‑hand cutting and complies with DIN 844 Type N geometry, so interchangeability and process validation are simplified when matching to existing setups. For applications beyond the stated strength range, consider alternative grades or coated options to maintain tool life and surface integrity.

Precise tolerances and compatibility with common tool systems

Nominal diameters of 9, 11, 13 and 15 mm are supplied to tolerance h10, with other sizes following e8, providing predictable fits for jigs and fixtures. The cutter’s centre‑cutting capability and three‑edge design make it suitable for both finishing and light roughing in many workshop contexts. Compliance with DIN standards and the use of established shank formats make integration into modular toolholders straightforward, helping to minimise setup time and support consistent part quality across batches.

For reliable slot milling with proven HSS‑Co8 performance and secure Weldon clamping, contact Metav Werkzeuge to specify the correct diameter and coating for the intended application and ensure a dependable supply chain from Emmerich

Technical Data

• Article number: 2000866234NW
• Designation: Slot drill DIN 844 Type N, HSS‑Co8, Weldon shank, long
• Manufacturer: TECWERK

Facts

• Nominal diameters: 9, 11, 13, 15 mm (tolerance h10); others e8
• Shaft diameter: 12 mm
• Free cutting length: 11.5 mm
• Material strength capacity: up to 800 N/mm² (uncoated), 1000 N/mm² (coated)
• Cutting edges: 3 flutes, centre cutting, right‑hand

Special features

• Material grade: HSS‑Co8
• Standard: DIN 844 Type N
• Shank: cylinder shank with drive flat (Weldon)
• Geometry: long version, three‑cutter design
• Material suitability: steel very good; cast iron very good; INOX and NE‑metals conditionally suitable
• Packaging unit: 1

FAQ

Which materials is this slot drill best suited for?
The TECWERK slot drill in HSS‑Co8 is rated very good for steel and cast iron; stainless steel and non‑ferrous metals are workable but only conditionally suitable, so coating or tool selection may be required for optimal life.

Can this cutter perform plunge cuts?
Yes. The cutter is centre cutting with a three‑flute long geometry, which permits controlled plunging for slotting and keyway operations when used within the stated material strength limits.

What tolerances apply to the available diameters?
Nominal diameters 9, 11, 13 and 15 mm are supplied to h10 tolerance; other sizes follow e8, ensuring predictable fits for fixtures and holders.

Is the shank compatible with standard Weldon toolholders?
The cylinder shank includes a drive flat for a Weldon clamping system, so it is compatible with holders designed for that shank form and provides positive drive under load.

Are coated versions available for harder materials?
Coated variants are indicated by the higher material strength rating (up to 1000 N/mm² when coated). For applications approaching that limit, a coated cutter can offer improved performance and longer life.

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