52mm Face Clamping Chuck Weldon Shank Dia.20mm, DIN 69871 AD/B Coolant Channels - TECWERK

Take advantage of secure, repeatable clamping and integrated coolant management to keep cycle times consistent and tools running longer. Benefit from the DIN 69871 taper for concentric setups and the Weldon 20 mm clamping for positive drive engagement; order directly via Metav Werkzeuge or consult our specialists for application advice.

TECWERK Face clamping chuck DIN 69871 AD/B — SK40, 20 mm Weldon

The TECWERK Face clamping chuck DIN 69871 AD/B is a precision SK40 toolholder designed for reliable face clamping of cylindrical-shank tools in milling and CNC applications.

• Steep taper to DIN 69871 Form AD/B
• Central coolant feed with closable channels
• Weldon 20 mm clamping diameter, SK40 shank

Reliable concentricity for consistent production

The conical taper specified to DIN 69871 Form AD/B provides a secure, repeatable seating that reduces runout and supports tight tolerances across series production. The internal bore manufactured to H4 tolerance keeps concentricity predictable after multiple tool changes, which lowers setup times and minimises scrap rates. This level of positional control is particularly valuable in operations where part geometry and surface finish demand consistent tool alignment.

Integrated coolant control extends tool life

Equipped with a central coolant feed and closable coolant channels at the collar, the chuck enables targeted lubrication and efficient chip evacuation while preventing unwanted coolant escape during handling. Lateral coolant channels suit tools with a cylindrical shank and lateral drive per DIN 1835-B, supplying coolant directly to the cutting zone. The result is reduced thermal stress on cutting edges and longer service intervals for high-performance cutters.

Positive drive and compatibility for heavy-duty milling

The holder’s Weldon clamping flat with a 20 mm clamping diameter ensures positive torque transmission for demanding milling tasks, while the SK40 taper offers wide compatibility with standard spindle interfaces. The dimensions A = 63 mm and D = 52 mm deliver a robust contact length and stability under load, making this chuck suitable for both retrofit and new-machine installations where toolholder stiffness is essential.

Maintenance-friendly design for dependable uptime

Closable coolant channels simplify cleaning and service, keeping internal passages free from swarf and deposits without dismantling the entire holder. Built for workshop environments, the construction supports routine maintenance with minimal downtime; this practicality keeps production flowing and maintenance costs predictable, supporting long-term process reliability in industrial settings.

Discuss application suitability and stock status with Metav Werkzeuge – our Emmerich-based specialists provide technical guidance and fast supply for industrial precision tooling; contact info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000833776NW
• Product: Face clamping chuck
• Standard: DIN 69871 Form AD/B
• Brand: TECWERK

Dimensions / core data

• Shank: SK40
• A (length): 63 mm
• Outer diameter D: 52 mm
• Clamping diameter d: 20 mm
• Bore tolerance: H4

Features / special functions

• Central coolant feed
• Closable coolant channels at collar
• Lateral coolant channels for cylindrical-shank tools
• Weldon clamping flat for positive drive
• Suitable for tools with DIN 1835-B lateral drive

FAQ

What taper standard does this chuck use?
The chuck is manufactured to DIN 69871 Form AD/B, ensuring standardised seating and compatibility with SK40 spindles.

Which clamping method secures the tool?
Clamping is via a Weldon 20 mm flat, providing positive drive and secure torque transmission for milling operations.

How is coolant supplied to the tool?
A central coolant feed is combined with closable channels at the collar and lateral coolant passages for cylindrical-shank tools to channel fluid directly to the cutting zone.

Is the holder suitable for CNC milling retrofits?
Yes, the SK40 interface and standard dimensions (A = 63 mm, D = 52 mm) facilitate straightforward retrofit into machines using DIN 69871 toolholders.

What tolerance is used for the bore?
The internal bore is specified to H4 tolerance, which supports tight concentricity and repeatable setups.

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