20mm NC Spot Drill HSS-Co 90° Right-Hand Cylindrical Shank, h8 DIN 1835-A - TECWERK

Take advantage of robust HSS‑Co construction, a 20 mm h8 tolerance for repeatable precision and a DIN 1835‑A cylindrical shank for secure clamping; the tool enables position‑accurate spot drilling and simultaneous chamfering, shortening cycle times on CNC machines and drilling rigs. Order the NC centre drill directly via Metav Werkzeuge or ask our consultants if needed.

NC centre drill D20 mm, HSS‑Co, 90° – TECWERK

The NC centre drill D20 mm HSS‑Co is engineered for fast, position‑accurate spot drilling and chamfering on CNC machines and drilling rigs, combining sturdy cobalt‑alloy performance with precise shank compatibility

• HSS‑Co high‑cobalt construction
• 20 mm diameter with h8 tolerance
• Cylindrical shank to DIN 1835‑A
• 90° tip for exact centring

Faster, more reliable hole starts for production runs

The robust HSS‑Co composition delivers wear resistance under demanding machine cycles, which translates into longer tool life and fewer tool changes during batch production. With a 20 mm nominal diameter and h8 tolerance, the tool provides consistent diameter control that keeps repeatability high across multiple parts. The 90° tip geometry is optimised for positive engagement and reliable centring, reducing the risk of false starts and slippage when initiating holes on modern CNC equipment.

Secure clamping and standardised interface for quick changeover

A cylindrical shank manufactured to DIN 1835‑A ensures a standard, secure fit in holders and drill chucks, simplifying tool management in the machine shop. The standardised shank design allows swift changeover without bespoke adaptors, helping to cut non‑productive time. Tight tolerances on the shank and body maintain concentricity under rotation, supporting stable cutting conditions and a predictable hole‑start behaviour that benefits automated production workflows.

Combined centring and chamfering in one pass to save cycles

Designed for position‑accurate spot drilling and simultaneous chamfering, the tool enables the centring and the initial chamfer for threaded holes in a single operation, reducing handling and secondary operations. The documented feed parameter 0.12 mm/rev in steel up to 800 N gives a reliable starting point for process planning and helps to achieve consistent surface preparation for subsequent tapping. Using a single tool for both functions reduces assembly steps and improves throughput in high‑mix environments.

Practical machining benefits and application scope

The tool is optimised for NC machines and drilling rigs where quick, repeatable hole starts matter; its right‑hand cutting direction suits standard spindle setups. The combination of geometry and material supports efficient material removal at the tip while maintaining controlled chip formation. For shops seeking dependable initial hole accuracy and reduced rework, the tool brings measurable process stability and a clear route to higher first‑pass yield.

Contact Metav Werkzeuge for tailored technical advice and to place orders for the TECWERK NC centre drill D20 mm (SKU 2000860120NW); call +49 2822 7131930 or email info@metav-werkzeuge.com

Technical data

• Article number: 2000860120NW
• Product: NC centre drill
• Brand: TECWERK
• Standard: DIN 1835‑A

Facts

• Diameter: 20 mm
• Overall length: 131 mm
• Spiral length: 45 mm
• Tip angle: 90°
• Tolerance diameter: h8
• Feed in steel (up to 800 N): 0.12 mm/rev

Special features

• Material: HSS‑Co
• Shank: cylindrical shank to DIN 1835‑A
• Cutting direction: right‑hand cutting
• Application: position‑accurate spot drilling and chamfering on NC machines and drilling rigs
• Function: centring and chamfering of tapped holes in one operation
• Packaging unit: 1

FAQ

What materials is this centre drill intended for?
The TECWERK NC centre drill D20 mm made of HSS‑Co is specified for general machining on steel; the manufacturer notes a feed guideline of 0.12 mm/rev in steel up to 800 N for stable cutting.

How is the tool clamped to ensure concentricity?
Clamping is achieved via the cylindrical shank to DIN 1835‑A, which provides a standardised interface for secure seating in holders and chucks, preserving concentricity during rotation.

What level of positional accuracy can be expected?
The nominal 20 mm diameter with h8 tolerance combined with the 90° tip geometry supports high positional repeatability when used for spot drilling and centring operations.

Can it chamfer and centre tapped holes in one operation?
Yes — the tool is designed to combine centring and initial chamfering of threaded holes in a single pass, reducing cycle steps and improving process efficiency.

Which machines are suitable for this tool?
The tool is intended for use on NC machines and drilling rigs where precise, position‑accurate hole starts are required; it suits standard right‑hand spindle configurations.

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