42mm Face Clamping Chuck 12mm Weldon Shank, DIN 69871 AD/B, 50mm Projection - TECWERK

Take advantage of a compact, standardised toolholder that combines a steep DIN 69871 taper with controlled coolant routing and a precise 12 mm clamping bore for consistent machining results; order the toolholder via Metav Werkzeuge or consult their specialists for application matching.

TECWERK Face Clamping Chuck DIN 69871 AD/B – SK40, 12 mm (Weldon)

The Face Clamping Chuck DIN 69871 AD/B is a precision SK40 toolholder for secure clamping of cylindrical‑shank cutting tools, offering central coolant supply and resealable coolant channels for industrial milling applications.

• DIN 69871 AD/B taper, SK40 compatibility
• Central coolant supply with resealable channels
• Lateral coolant for cylindrical‑shank tools with flat
• Clamping diameter 12 mm, bore tolerance H4

Rigidity and repeatability for heavy machining

The steep DIN 69871 taper and SK40 interface provide a high radial and axial stiffness that translates into improved surface finish and longer tool life. The Weldon drive offers positive lateral engagement for cutters with a driving flat, reducing slippage during high‑torque operations. For production environments where repeatability is critical, this toolholder ensures reliable concentricity and stable cutting conditions, minimising rework and improving throughput.

Optimised coolant routing to extend tool life

Integrated central coolant supply and resealable coolant channels at the collar enable directed coolant flow to the cutting zone, improving heat dissipation and chip evacuation. Lateral coolant ducts allow effective cooling for tools with cylindrical shanks and a lateral driving flat to DIN 1835‑B, which helps to maintain cutting geometry and reduces thermal distortion. These features combine to prolong insert life and maintain consistent cycle times in continuous machining.

Tight tolerances for accurate tool guidance

A bore tolerance of H4 and a clamping diameter of 12 mm deliver a precise fit between tool shank and holder, supporting low run‑out and accurate tool guidance. The specified dimensions (A = 50 mm, D = 42 mm) facilitate predictable tool projection and cutter positioning in milling setups. Accurate mechanical interfaces reduce vibration and help to preserve cutting edges, which is especially important when machining alloys or performing fine finishing passes.

Built for workshop reliability and flexible integration

Engineered for industrial toolrooms and CNC machining centres, this compact holder balances durable design with straightforward maintenance: resealable channels allow flushing and inspection, while standard taper and Weldon engagement ensure interchangeability with existing SK40 systems. The combination of standard conformity and coolant management makes the holder suitable for a wide range of materials and production tasks, supporting a dependable workflow on the shop floor.

For tailored advice on integrating this TECWERK face clamping chuck into production processes, contact Metav Werkzeuge for expert consultation and reliable supply from Emmerich: info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 2000833772NW
• Product type: Face clamping chuck (Flächenspannfutter)
• Standard: DIN 69871 Form AD/B
• Brand: TECWERK

Facts

• Shank/interface: SK40
• A dimension: 50 mm
• D dimension: 42 mm
• Clamping diameter: 12 mm
• Bore tolerance: H4

Special features

• Steep taper according to DIN 69871 Form AD/B
• Central coolant supply; resealable coolant channels at collar
• Lateral coolant channels for cylindrical‑shank tools with flat to DIN 1835‑B
• Weldon lateral drive for positive tool engagement

FAQ

What machines is this holder compatible with?
This TECWERK face clamping chuck is designed for machines accepting SK40 toolholders and conforms to DIN 69871 Form AD/B, making it compatible with standard SK40 spindles.

Can tools with cylindrical shanks and flats be used?
Yes. The holder features lateral coolant channels and a Weldon lateral drive that accommodate tools with a cylindrical shank and a lateral driving flat in accordance with DIN 1835‑B.

How does the coolant system benefit machining?
The central coolant supply and resealable channels channel coolant directly to the cutting zone, improving cooling and chip evacuation; this reduces tool wear and helps maintain consistent cutting performance with the TECWERK holder (SKU 2000833772NW).

What run‑out accuracy can be expected?
Tight bore tolerance H4 and the standardised taper‑shank interface support low run‑out and consistent concentricity, contributing to precise tool guidance in production use.

Is maintenance difficult for the coolant channels?
No. The resealable design enables controlled flushing and inspection of the coolant passages, simplifying upkeep and reducing unplanned downtime.

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