9mm Drill Groove Cutter HSS-Co8 TiCN Coating Weldon Shank Z3 Long, DIN 844 - TECWERK

Combining wear-resistant TiCN coating, HSS‑Co8 substrate and a secure Weldon shank, this long 3‑flute slot drill delivers reliable slotting and plunge milling in steels and stainless steel; order the slot drill directly via Metav Werkzeuge or consult our technical advisors for application-specific guidance.

TECWERK slot drill DIN 844 Type N — 9 mm, HSS‑Co8, TiCN, Weldon shank, 3‑flute (long)

The TECWERK slot drill DIN 844 Type N is a long, centre‑cutting 3‑flute slotting cutter designed for precision slot and plunge operations in medium‑strength metals.

• HSS‑Co8 high red hardness
• TiCN coating for extended tool life
• Centre‑cutting for plunge and slot milling
• Weldon shank 10 mm for secure clamping

Engineered for reliable slotting and plunge milling

The TECWERK slot drill DIN 844 Type N combines a HSS‑Co8 substrate with a TiCN coating to extend tool life and allow higher cutting parameters where appropriate. The centre‑cutting geometry enables safe plunge starts, while the 3‑flute arrangement balances cutting forces and improves surface finish in narrow slots. The nominal 9 mm diameter and an effective length of 26 mm provide a compact tool body suited to precise slotting, and the combination of substrate and coating reduces flank wear under intermittent cutting cycles.

Application range and material capacity explained

This long slot cutter is specified for machining low to medium tensile strength materials and performs particularly well with steels and stainless steel. With an uncoated tool, the design is rated up to around 800 N/mm², and with the TiCN coating this increases to approximately 1000 N/mm², allowing safer machining of harder workpieces within those limits. Non‑ferrous metals and special alloys are listed as conditionally suitable; the chosen micro‑geometry and coating improve performance where increased hardness or adhesion would otherwise shorten tool life.

Secure clamping and machining stability for consistent results

A Weldon shank with drive flat and a shaft diameter of 10 mm ensures positive torque transmission and repeatable concentricity in most common toolholders. The overall length of 69 mm provides reach for deeper set‑ups while the specified free relief of 8.5 mm reduces rubbing behind the cutting edges. These features together enhance stability, reduce chatter risk and support consistent results in series production or one‑off precision work.

Cutting geometry and productivity considerations

The cutter features a short primary cutting length of 3 mm and a centred cutting tip, ideal for shallow slotting and keyway operations where precision is essential. The right‑hand cutting direction and balanced three‑edge geometry promote steady chip formation and evacuation for cleaner slot walls. Tolerances for comparable nominal diameters are controlled to industry standards to support interchangeability and predictable fits in precision fixtures.

Choose the TECWERK long slot drill for dependable slotting and plunge milling and contact Metav Werkzeuge for advice or to place an order — eMail: info@metav-werkzeuge.com or phone +49 2822 7131930

Technical data

• Article number: 2000866023NW
• Part name: Slot drill DIN 844 Type N (long)
• Standard: DIN 327
• Manufacturer: TECWERK

Core technical data

• Diameter: 9 mm
• Number of cutting edges: 3
• Overall length: 69 mm
• Effective length: 26 mm
• Cutting length: 3 mm
• Free relief: 8.5 mm
• Shank diameter: 10 mm
• Cutting direction: right‑hand

Special features

• Material: HSS‑Co (HSS‑Co8)
• Coating: TiCN
• Centre‑cutting geometry
• Weldon shank with drive flat
• Long version for extended reach
• Suitable up to ~800 N/mm² uncoated; ~1000 N/mm² coated
• Very good suitability: steel, stainless steel, cast iron
• Conditional suitability: non‑ferrous metals, special alloys
• Nominal diameters 9, 11, 13, 15 mm: tolerance h10; other sizes: e8

FAQ

What materials is this slot drill suited for?
The TECWERK slot drill DIN 844 Type N is very well suited for steel, stainless steel and cast iron; non‑ferrous metals and special alloys are conditionally suitable depending on the machining parameters.

Can this cutter be used for plunge milling?
Yes. The centre‑cutting geometry and the 3‑flute design enable plunge starts and controlled slotting with reduced risk of tip breakage.

How does the TiCN coating affect performance?
The TiCN coating reduces friction and increases wear resistance, allowing higher cutting loads and extending tool life compared with uncoated HSS‑Co substrate in many applications.

Which clamping systems are compatible with the shank?
The Weldon shank with drive flat is compatible with standard Weldon‑style collet holders and chucks that accept a 10 mm cylindrical shank with a drive flat.

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