3mm NC Centre Drill HSS-Co 120° 12mm Flute, Cylindrical Shank DIN 1835-A - TECWERK

Take advantage of a compact, production-ready solution that combines HSS‑Co wear resistance with a 120° point for reliable centring and chamfering; the cylindrical shank to DIN 1835‑A ensures secure clamping and repeatable positioning. Order directly via Metav Werkzeuge or consult our specialists for application-specific advice.

NC centre drill 3 mm (HSS‑Co) by TECWERK — cylindrical shank DIN 1835‑A, 120° point

NC centre drill 3 mm (HSS‑Co) by TECWERK is designed for accurate, position‑true spot drilling and chamfering on automated drilling centres and NC machines.

• HSS‑Co material for elevated wear resistance
• Cylindrical shank to DIN 1835‑A for secure clamping
• 120° point for precise centring and chamfering
• Feed: 0.03 mm/rev in steel up to 800 N

Faster set‑ups through combined centring and chamfering

The combination of a 120° point and controlled flute geometry enables position‑accurate starts and a simultaneous chamfering operation, reducing the number of tool changes and process steps. By performing centring and chamfering in a single pass, process flow becomes leaner and downtime between operations is reduced, which translates into measurable productivity benefits on automated equipment. The compact design supports tight tool stacks and quick tool changes on NC drilling heads.

Secure clamping and repeatable positioning for production runs

A cylindrical shank manufactured to DIN 1835‑A and a diameter tolerance of h8 provide a consistently precise interface between toolholder and drill. This mechanical reliability ensures repeatable hole positioning across batches which is essential for serial manufacturing and jigged operations. The shank geometry is compatible with standard NC toolholders and drilling centres, offering simple integration into existing tool inventories and minimising fixturing adjustments.

Durable cutting performance and clear feed guidance

Made from cobalt high‑speed steel (HSS‑Co), the tool balances toughness and hot‑hardness for sustained cutting in demanding conditions. The right‑hand cutting geometry is optimised for conventional spindle rotation and chip evacuation on powered centres. For steels with tensile strengths up to 800 N, the recommended feed is 0.03 mm/rev, a parameter that supports controlled cutting forces and consistent surface quality, while extending service life compared with overly aggressive settings.

Practical dimensions and application notes for machinists

The tool’s working geometry—3 mm diameter with a spiral length of 12 mm and an overall length of 46 mm—is arranged to suit common NC setups where compact reach and rigidity are required. The short flute length aids chip control during the initial hole start, while the overall length maintains clearance for chamfering operations. This configuration is particularly suited to producing starter holes for subsequent threading or reaming in one efficient operation on NC machines and drilling centres.

Contact Metav Werkzeuge for stock status and tailored application support for TECWERK centre drills; Metav Werkzeuge supplies from Emmerich and can advise on machining parameters — eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000860083NW
• Product: NC centre drill, HSS‑Co
• Manufacturer: TECWERK

Facts

• Diameter: 3 mm
• Overall length: 46 mm
• Flute/spiral length: 12 mm
• Point angle: 120°
• Cutting direction: right‑hand cutting
• Shank design: cylindrical shank to DIN 1835‑A
• Diameter tolerance: h8
• Packaging unit: 1
• Feed in steel ≤800 N: 0.03 mm/rev

Special features

• Material: HSS‑Co (cobalt high‑speed steel)
• For position‑accurate and fast spot drilling on NC machines and drilling centres
• Centring and chamfering of threaded holes in a single operation
• Secure clamping due to DIN 1835‑A shank compatibility

FAQ

What machines is this centre drill intended for?
This centre drill is designed for use on NC machines and drilling centres where position‑true spot drilling and combined chamfering are required; refer to SKU 2000860083NW for identification.

Which shank standard does the tool use?
The tool features a cylindrical shank manufactured to DIN 1835‑A, ensuring compatibility with standard NC toolholders and secure clamping.

What cutting material and geometry are used?
Manufactured from HSS‑Co, the tool combines toughness with hot‑hardness; the 120° point and right‑hand cutting geometry are optimised for precise centring and effective chip evacuation.

What feed should be used in steel?
For steels with tensile strength up to 800 N, a feed of 0.03 mm/rev is recommended to balance cutting forces and surface finish.

Can this tool centre and chamfer threaded holes in one operation?
Yes, the geometry is specifically intended for centring and chamfering of threaded holes in a single pass on appropriate NC equipment.

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