25mm Face Clamping Chuck DIN 69871 AD/B With 6mm Weldon Shank, Central Coolant Channels - TECWERK

Engineered for rigid fixation with a steep SK40 taper and a precise H4 bore tolerance, this face clamping chuck delivers consistent, vibration‑resistant toolholding and improved coolant control. Order the TECWERK unit via Metav Werkzeuge or consult the specialists for application‑specific guidance.

TECWERK face clamping chuck DIN 69871 AD/B — SK40, 6 mm Weldon

The TECWERK face clamping chuck designed for SK40 spindles combines a steep taper to DIN 69871 Form AD/B with central and lateral coolant feeds for precision milling applications.

• DIN 69871 Form AD/B taper
• Central coolant supply, resealable channels
• Lateral coolant channels for cylindrical shanks
• Bore tolerance H4 for accurate seating

Rigid toolholding that meets industry standards

The holder is built to DIN 69871 Form AD/B and fitted to an SK40 shank, delivering a steep taper that prioritises axial rigidity and repeatability. The internal bore is finished to H4 tolerance, ensuring a concentric, low‑runout fit with cutters and shanks. With a clamping diameter of 6 mm and flange dimensions A = 50 mm and D = 25 mm, the design reduces micro‑movement during heavy cuts, which supports higher surface quality and predictable cycle times.

Integrated coolant management to protect cutters and workpieces

A central coolant supply and resealable coolant channels at the flange keep cutting edges cooled directly through the tool, while additional lateral coolant channels accommodate tools with cylindrical shanks and a lateral drive flat to DIN 1835‑B. This configuration improves chip evacuation and temperature control at the cutting zone, which lowers thermal expansion and extends insert and tool life. The combination of internal feed and lateral delivery supports demanding operations where coolant penetration and stable cutting conditions are essential.

Workshop efficiency and compatibility for production use

Equipped with a Weldon drive for the 6 mm clamping diameter and matching the SK40 interface, the chuck offers straightforward integration with existing milling setups. The compact flange and standardised interface simplify tool changes and reduce spindle downtime, making it suitable for both precision jobbing and serial production. As a standardised toolholder, it supports consistent setup routines and predictable maintenance intervals, helping to streamline the supply chain and keep machining processes steady.

Request a technical consultation or specification sheet from Metav Werkzeuge in Emmerich to confirm suitability and delivery options for the TECWERK face clamping chuck (SKU 2000833769NW)

Technical data

• SKU: 2000833769NW
• Standard: DIN 69871 Form AD/B
• Shank: SK40
• Clamping type: face clamping chuck

Dimensional data

• A (projection): 50 mm
• D (flange Ø): 25 mm
• Clamping Ø d: 6 mm
• Bore tolerance: H4

Features

• Central coolant supply
• Resealable coolant channels at flange
• Lateral coolant channels for cylindrical shanks
• Lateral drive flat compatible with DIN 1835‑B
• Weldon drive for 6 mm clamping

FAQ

What taper and spindle interface does this holder use?
The TECWERK face clamping chuck uses a steep taper to DIN 69871 Form AD/B and fits an SK40 spindle interface (SKU 2000833769NW).

How is coolant delivered to the cutting edge?
Coolant is routed via a central coolant supply with resealable channels at the flange and lateral coolant channels that service tools with a cylindrical shank and lateral drive flat per DIN 1835‑B.

What ensures precise seating of the tool in the holder?
A bore finished to H4 tolerance provides a concentric fit, combined with the DIN 69871 taper geometry to reduce runout and improve machining accuracy.

Which tool shank types are compatible with the lateral channels?
Tools with cylindrical shanks and a lateral drive flat (Weldon) to DIN 1835‑B are compatible with the lateral coolant channels and drive arrangement of this chuck.

What are the key flange and clamping dimensions to consider when planning setups?
Relevant dimensions are A = 50 mm, flange Ø D = 25 mm, and clamping diameter 6 mm, which inform tool projection and clearance requirements.

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