4mm NC Centre Drill HSS-Co 90° 12mm Flute, DIN 1835-A - TECWERK

Combining HSS‑Co robustness, a 90° point for accurate centring and a DIN 1835‑A cylindrical shank ensures reliable, repeatable pre‑drilling and chamfering on CNC equipment; order the NC centre drill directly via Metav Werkzeuge or consult our technical team for tailored advice.

TECWERK NC centre drill D 4 mm, HSS‑Co, 90° point

TECWERK NC centre drill D 4 mm HSS‑Co — a precision spot drill for repeatable centring and rapid pre‑drilling on NC machines and boring mills

• HSS‑Co for high wear resistance
• 90° point for precise centring
• Cylindrical shank to DIN 1835‑A
• Feed 0.03 mm/rev in steel up to 800 N

High‑performance material and design for consistent results

Manufactured from HSS‑Co, this spot drill offers elevated hot hardness and wear resistance that supports sustained production runs. The 90° point produces a clean, well‑defined centre that reduces radial run‑out when followed by subsequent drilling or reaming operations. Combined with a cylindrical shank compliant with DIN 1835‑A, the tool integrates seamlessly with automatic tool changers and collet systems, delivering the consistency required for series production and precision tasks.

Precision fit and reduced setup time for efficient workflows

The tool's h8 diameter tolerance and compact geometry reduce variances during tool changes, which helps to cut setup time on CNC machines and drill rigs. Its geometry is engineered for both centring and chamfering in a single pass, enabling the elimination of separate chamfering steps and thus shortening cycle times. The result is improved machine uptime and a more predictable production flow in metalworking environments.

Machining parameters that balance speed and surface quality

With a flute (spiral) length of 12 mm and an overall length of 55 mm, the drill is optimised for short overhangs and stable cutting conditions. The recommended feed of 0.03 mm/rev in steel up to 800 N provides a practical starting point for achieving repeatable hole starts without compromising edge quality. The right‑hand cutting geometry suits standard clockwise spindle rotation and supports conventional toolpath strategies on CNC platforms.

Robust application range and straightforward handling

Designed for fast, position‑accurate pre‑drilling on NC machines and boring mills, the centre drill is also suitable for preparing thread starts where clean chamfers and correct centring are essential. The combination of HSS‑Co material and the specified point geometry prolongs tool life under frequent use, while the standard DIN 1835‑A shank simplifies tool change procedures—making this spot drill a practical choice for workshops aiming to improve first‑pass accuracy and reduce rework.

For dependable centring and faster setup, contact Metav Werkzeuge in Emmerich to request a quote or technical consultation for this TECWERK NC centre drill (SKU 2000860104NW) — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss compatibility with existing tooling systems

Technical data

• Article number: 2000860104NW
• Standard: DIN 1835‑A
• Material: HSS‑Co
• Product type: NC centre drill

Facts

• Diameter: 4 mm
• Overall length: 55 mm
• Spiral (flute) length: 12 mm
• Point angle: 90°
• Tolerance diameter: h8
• Feed in steel up to 800 N: 0.03 mm/rev
• Packaging unit: 1

Special features

• Cylindrical shank to DIN 1835‑A
• Right‑hand cutting
• For position‑accurate and fast pre‑drilling on NC machines and boring mills
• For centring and chamfering of thread holes in one pass
• HSS‑Co construction

FAQ

What materials is this centre drill suitable for?
The TECWERK NC centre drill (NC‑Anbohrer) with HSS‑Co construction is intended primarily for steel applications as specified; the tool is optimised for centring and pre‑drilling on NC machines and boring mills.

How does the DIN 1835‑A shank benefit machine use?
A DIN 1835‑A cylindrical shank ensures compatibility with standard tool holders and automatic tool changers, improving repeatability and ease of integration of the TECWERK NC centre drill (SKU 2000860104NW) into existing CNC tool systems.

What feed rate should be used for reliable centring?
A recommended feed of 0.03 mm/rev in steel up to 800 N is cited for reliable hole starts; adjust feeds according to machine rigidity and workpiece clamping to maintain edge quality.

Can the tool also chamfer thread holes?
Yes, the geometry allows for centring and chamfering of threaded holes in a single operation, reducing the number of tool changes and cycle time when using the TECWERK NC centre drill.

Is the tolerance tight enough for precision work?
The h8 diameter tolerance provides a precision fit suitable for typical centring operations and helps to ensure consistent location when changing tools.

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