8mm NC Centre Drill HSS-Co 120° Right-Hand Cylindrical Shank h8, DIN 1835-A - TECWERK

Take advantage of cobalt HSS construction and a 120° point angle for accurate centring and chamfering in a single pass; the DIN 1835‑A cylindrical shank guarantees secure, repeatable mounting on NC machines. Order the tool directly via Metav Werkzeuge or consult our specialists for application advice.

NC spot drill Ø8 mm – HSS‑Co, 120° | TECWERK

A NC spot drill Ø8 mm by TECWERK designed for precise positioning, centring and chamfering on NC machines and boring centres

• Cobalt HSS construction for extended tool life
• DIN 1835‑A cylindrical shank for NC spindles
• 120° point for reliable centring and chamfering
• Feed in steel up to 0.07 mm/rev at 800 N cutting force

Precision centring and one‑pass chamfering that saves cycle time

The tool combines a 120° point angle with a short, rigid geometry to enable exact centring and simultaneous chamfering of threaded holes. This design reduces the number of setups and eliminates additional chamfering steps, delivering tangible process savings. The HSS‑Co substrate offers a balance between toughness and wear resistance, so the tool keeps cutting edges intact during repetitive automatic cycles on production machinery.

Secure mounting and repeatability for NC operations

Equipped with a DIN 1835‑A cylindrical shank, the drill seats reliably in standard tool holders and collets used on machining centres and NC drilling machines. The tight h8 diameter tolerance supports consistent axial alignment and repeatable hole positioning, which is critical when the tool is used for pre‑drilling and centring prior to threading. Reduced setup variability translates directly into less scrap and fewer reworks in serial production.

Process performance tuned to steel machining

Designed as a right‑hand cutting spot drill, the geometry is optimised for fast, accurate starts in steel. The specified guidance indicates a feed in steel up to 0.07 mm/rev at a cutting force around 800 N, providing a clear benchmark for cycle planning. Operators and process engineers can use this figure to set conservative feeds for prolonged tool life, or increase productivity within machine and workpiece limits when conditions allow.

Durable substrate and practical handling for repetitive tasks

Manufactured from HSS‑Co, the tool is built to withstand the impacts and temperatures associated with automatic pecking and positioning cycles. The cylindrical shank and solid construction make handling and tool changes straightforward, while the compact overall length helps reduce deflection when working on small‑bore starts. For shops seeking consistent centring performance across multiple batches, this configuration offers reliable repeatability without the need for complex fixturing.

Secure consistent centring for automated processes with TECWERK spot drills — contact Metav Werkzeuge for product availability and application guidance at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• SKU: 2000860088NW
• Standard: DIN 1835‑A
• Material: HSS‑Co
• Product type: NC spot drill

Core specifications

• Diameter: 8 mm
• Overall length: 79 mm
• Spiral length: 21 mm
• Point angle: 120°
• Cutting direction: right‑hand
• Shank style: cylindrical shank
• Diameter tolerance: h8
• Packaging unit: 1

Design and features

• For positioning and rapid spot drilling on NC machines and boring centres
• For centring and chamfering of threaded holes in one pass
• Feed in steel up to 0.07 mm/rev at 800 N cutting force
• Right‑hand cutting geometry

FAQ

Which machines is this tool suitable for? This NC spot drill Ø8 mm is intended for NC machines and boring centres where DIN 1835‑A shanks are accepted and repeatable axial positioning is required.

What does the DIN 1835‑A designation mean for mounting? DIN 1835‑A indicates a cylindrical shank designed for secure clamping in standard holders and collets, ensuring the repeatability expected in automatic tool changes.

Can this tool be used for threaded hole preparation? Yes, the geometry is optimised for centring and chamfering of threaded holes in a single pass, reducing the need for separate chamfering operations.

What feed recommendation is given for steel? Guidance specifies a feed in steel up to 0.07 mm/rev at approximately 800 N cutting force, which serves as a reference for process planning.

What tolerance does the 8 mm diameter have? The drill is supplied with an h8 diameter tolerance to support consistent positioning and minimal runout.

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