8mm NC Spot Drill Solid Carbide TiAlN Coated 142° Point, h6 Cylindrical Shank DIN 6535-HB - TECWERK

Benefit from the combination of solid‑carbide construction, TiAlN coating and a 142° point angle for rapid, position‑accurate centring and chamfering on CNC machines; order the NC spot drill directly via Metav Werkzeuge or ask the consultants for tailored advice.

NC spot drill D 8 mm (solid carbide, TiAlN, 142°) by TECWERK

The NC spot drill D 8 mm is a solid‑carbide centre and spot drill engineered for fast, position‑accurate pilot drilling and chamfering on NC machines and drilling centres.

• Solid‑carbide construction for high rigidity
• TiAlN coating for extended tool life
• 142° point angle for accurate centring
• Cylindrical shank to DIN 6535‑HB, tolerance h6

Faster, more accurate centring that reduces cycle time

The combination of a solid‑carbide body and a 142° point angle provides a stable, reproducible entry that reduces lateral run‑out during pilot drilling. This results in fewer re‑set operations and improved positional accuracy on workpieces, which converts directly into shorter cycle times and more consistent hole quality when processing batches on NC machines.

Longer service life and heat resistance for demanding materials

A TiAlN surface treatment increases wear resistance and thermal stability at elevated cutting temperatures. The coating's performance benefits tool life particularly when machining high‑strength steels and stainless steels, meaning fewer tool changes and a more economical throughput for mixed‑material production runs without compromising edge integrity.

Secure clamping and reliable tool location for repeatable results

The cylindrical shank manufactured to DIN 6535‑HB and tolerance h6 ensures concentric clamping and minimises run‑out within standard toolholders. Right‑hand cutting geometry and the integrated capability to combine centring and chamfering in one pass make this centre drill well suited to preparatory operations for thread tapping and for centring VHM twist drills with point angles between 120° and 140°, improving process reliability.

Predictable feed and geometry for controlled chip formation

With a spiral length of 23 mm and an overall length of 60 mm, the design supports controlled chip evacuation. Recommended feed in steel up to 800 N is 0.1 mm/rev, which balances material removal and edge life to maintain a consistent surface finish and reduce burr formation. These controlled parameters help to safeguard subsequent operations such as tapping or reaming.

For workshop reliability and precise pilot drilling, order TECWERK's NC spot drill through Metav Werkzeuge—technical consultation and supply from Emmerich are available via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 2000865841NW
• Label: NC-Anbohrer D.8mm VHM TiAlN 142Grad TECWERK
• Manufacturer: TECWERK
• Norm: DIN 6535-HB

Data

• Diameter: 8 mm
• Overall length: 60 mm
• Spiral length: 23 mm
• Point angle: 142°
• Tolerance diameter: h6
• Packaging unit: 1
• Recommended feed in steel up to 800 N: 0.1 mm/rev

Special features

• Material: VHM (solid carbide)
• Coating: TiAlN
• Shank: cylindrical shank to DIN 6535‑HB
• Cutting direction: right‑hand cutting
• Application: position‑accurate spot drilling, centring and chamfering of thread holes in one pass
• Suitable for: high‑strength steels, cast steel, grey cast iron, stainless steels and non‑ferrous metals
• Compatible with VHM twist drills with 120–140° point angle

FAQ

What is the intended use of this centre drill?
The NC spot drill D 8 mm is designed for position‑accurate pilot drilling and simultaneous centring/chamfering on NC machines and drilling centres, preparing holes for subsequent tapping or drilling operations.

Which materials can be machined with this tool?
Thanks to its solid‑carbide substrate and TiAlN coating, the tool is suitable for high‑strength steels, grey cast iron, stainless steels and many non‑ferrous metals.

How does the DIN 6535‑HB shank benefit the process?
The cylindrical shank to DIN 6535‑HB with tolerance h6 ensures concentric clamping in standard toolholders, reducing run‑out and improving repeatability of the centre drill during batch operations.

Can this spot drill be used to centre twist drills?
Yes, the geometry is suitable for centring VHM twist drills with a point angle between 120° and 140°, enabling accurate pre‑location prior to drilling.

What cutting data is recommended for a consistent finish?
A feed of 0.1 mm/rev in steel at cutting forces up to 800 N is recommended to balance material removal and tool life while maintaining controlled chip formation.

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