3mm NC Spot Drill HSS-Co 90° Right-Hand Cylindrical Shank, h8 Tolerance - TECWERK

Benefit from precise hole starts and durable performance: the cobalt-alloy HSS-Co construction combined with a 90° centring tip delivers reliable positioning and fast chamfering in one pass. Secure clamping is ensured by the DIN 1835-A cylindrical shank, while compatibility with NC machines and drill benches simplifies integration into production.

NC centre drill 3 mm, HSS‑Co, 90° – TECWERK

NC centre drill 3 mm (HSS‑Co, 90°) is a purpose-built spotting and centring tool for accurate hole starts on NC machines and drill rigs.

• Cobalt HSS for high wear resistance
• 90° tip for precise centring and chamfering
• Cylindrical shank to DIN 1835‑A for secure clamping
• Flute length 12 mm; total length 46 mm

Accurate starts and combined centring/chamfering for machining reliability

The 3 mm centre drill provides a defined entry point that reduces drill wander and improves positional accuracy on automated equipment. The 90° tip geometry enables simultaneous centring and light chamfering, which shortens cycle times by eliminating separate operations. H8 diameter tolerance gives predictable fit in fixtures, and the tool’s design is especially suited for producing reliable starts prior to twist-drilling or when preparing threaded holes. This results in fewer reworks and a more consistent hole quality across batches.

Durable material and secure clamping for continuous production

Manufactured from HSS‑Co (cobalt-alloy high‑speed steel), the tool combines toughness with elevated red‑hardness for extended tool life in interrupted cuts and repetitive positioning cycles. The cylindrical shank in accordance with DIN 1835‑A ensures compatibility with standard chucks and adaptors, providing secure clamping and repeatable concentricity. Right‑hand cutting geometry matches common spindle directions on NC machines, so tool engagement and chip evacuation remain predictable under typical production settings.

Optimised geometry and feed recommendations for efficient machining

With a flute length of 12 mm and total length 46 mm, the tool balances accessibility with rigidity to limit deflection during spot drilling. The recommended feed in steel up to 800 N is 0.03 mm/rev, a setting that supports clean centring and controlled chip formation without sacrificing cycle time. Designed for fast, position‑accurate spot drilling on NC machines and drill benches, the tool is ideal for preparing holes for threading or subsequent drilling operations in a single, efficient step.

For application advice or to request this TECWERK NC centre drill through Metav Werkzeuge, please contact Metav Werkzeuge for detailed consultation and ordering support

Technical data

• Article number: 2000860103NW
• Brand: TECWERK
• Product type: NC centre drill
• Standard: DIN 1835‑A
• Material: HSS‑Co
• Diameter: 3 mm
• Total length: 46 mm
• Flute length: 12 mm
• Tip angle: 90°
• Cutting direction: right‑hand cutting
• Shank design: cylindrical shank
• Diameter tolerance: h8
• Packaging unit: 1

Core data

• Diameter: 3 mm
• Total length: 46 mm
• Flute length: 12 mm
• Tip angle: 90°
• Tolerance: h8
• Recommended feed in steel ≤ 800 N: 0.03 mm/rev

Special features

• HSS‑Co material for increased wear resistance
• Cylindrical shank to DIN 1835‑A for secure clamping
• Right‑hand cutting geometry
• Suited to NC machines and drill benches
• Centres and chamfers thread holes in one operation

FAQ

Is this centre drill suitable for both centring and chamfering in one pass?
Yes. The TECWERK NC centre drill with its 90° tip is designed to centre and provide a light chamfer in a single operation, reducing setup time and the need for additional tools.

Which machines is the tool compatible with?
The tool is intended for NC machines and drill benches; the DIN 1835‑A cylindrical shank ensures compatibility with standard chucks and adaptors used in automated and manual setups.

What are the material benefits of HSS‑Co for this application?
HSS‑Co offers improved red‑hardness and wear resistance compared with standard HSS, making the TECWERK centre drill better suited to repetitive positioning cycles and intermittent cutting typical of spotting operations.

What feed and cutting direction are recommended?
A feed of approximately 0.03 mm/rev is recommended in steel up to 800 N, and the tool is manufactured with right‑hand cutting geometry for standard spindle rotation directions.

How precise is the nominal diameter and how does that affect clamping?
The tool is produced to an h8 diameter tolerance, providing consistent fit and repeatable concentricity when clamped in chucks compliant with DIN 1835‑A.

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