8mm NC Spot Drill HSS-Co 90° Right-Hand Cylindrical Shank, h8 Tolerance - TECWERK

Take advantage of the combination of HSS‑Co durability and a 90° tip for position‑accurate spot drilling, plus the secure clamping of a DIN 1835‑A cylinder shank for repeatable setup — all supplied through Metav Werkzeuge for reliable workshop stocking and advice.

TECWERK NC centre drill Ø 8 mm — HSS‑Co, 90° tip

The TECWERK NC centre drill Ø 8 mm is a purpose‑built centre/spot drill for position‑accurate starting holes and chamfering on NC machines and drilling rigs.

• HSS‑Co high wear resistance
• Cylinder shank to DIN 1835‑A
• Position‑accurate, fast spot drilling
• 90° tip for reliable centring

Faster, more reliable hole starts for CNC workflows

A hardened HSS‑Co construction provides improved wear resistance and consistent edge life under repetitive cycle loads, making this tool ideal where repeatability matters. The short flute and controlled geometry deliver a clean engagement at the start of the cut, reducing walking and run‑out. With a specified feed in steel of 0.07 mm/rev at cutting forces up to 800 N, the design supports stable, measurable cycle times — a practical advantage for production environments seeking higher throughput and fewer reworks.

Combine centring and chamfering in a single operation

The 90° tip geometry allows centring and light chamfering of threaded holes in one pass, eliminating an extra operation and saving set‑up time. This integrated approach reduces fixture handling and tool changes, which directly benefits process reliability and cost efficiency. In practice, the result is a cleanly prepared entry for subsequent drilling or tapping operations and fewer misaligned starts that can compromise thread quality.

Secure mounting and consistent clamping for repeatable parts

Built to DIN 1835‑A with a cylinder shank, the tool ensures secure seating in standard holders and collets. The tolerance h8 on the diameter supports concentric clamping and predictable run‑out control, while the overall length and spiral length 21 mm balance reach with rigidity. Right‑hand cutting and the compact geometry provide a familiar setup for machinists, enabling predictable performance across batches and simplifying tool inventory management.

Contact Metav Werkzeuge for tailored advice on integrating this TECWERK NC centre drill into production; email info@metav-werkzeuge.com or call +49 2822 7131930 for technical clarification and stock information

Technical Data

• Article number: 2000860108NW
• Standard: DIN 1835-A
• Material: HSS-Co
• Product type: NC centre drill

Facts

• Diameter: 8 mm
• Overall length: 79 mm
• Spiral length: 21 mm
• Tip angle: 90°
• Tolerance: h8
• Feed in steel up to 800 N: 0.07 mm/rev

Special features

• Shank: cylinder shank to DIN 1835‑A
• Cutting direction: right‑hand cutting
• Application: position‑accurate and rapid spot drilling on NC machines and drilling rigs
• Function: centring and chamfering of thread holes in one operation
• Packing unit: 1

FAQ

What is the primary application of this centre drill?
The TECWERK NC centre drill Ø 8 mm is intended for position‑accurate spot drilling and centring on NC machines and drilling rigs, with integrated chamfering for threaded entries.

Is the shank compatible with standard toolholders?
Yes. The cylinder shank conforms to DIN 1835‑A, so the tool fits common collets and holders designed for that standard, supporting secure clamping and repeatable concentricity.

What feed and cutting conditions are specified for steel?
The data indicates a feed in steel up to 800 N of 0.07 mm/rev, which offers a practical starting point for setting cycle parameters on production machines.

Which properties help reduce misaligned starts and rework?
The combination of a 90° tip geometry and a precise h8 tolerance on the diameter reduces walking at plunge entry and supports accurate centring, lowering the risk of misaligned starts and subsequent rework.

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