50mm Face Clamping Chuck DIN 69871 Form AD, Weldon Shank 25mm, A35mm - TECWERK

Take advantage of the combination of precise standard conformity, a secure Weldon clamping interface and compact dimensions for reliable, repeatable toolholding in daily workshop and CNC use; order the item directly via Metav Werkzeuge or consult the specialists for application advice.

TECWERK Weldon face clamping holder SK40 – 25 mm clamping diameter (DIN 69871 Form AD)

The TECWERK Weldon face clamping holder is a DIN 69871 Form AD toolholder for secure mounting of cylindrical-shank cutters with lateral drive according to DIN 1835-B.

• Weldon flat for secure lateral drive
• Conforms to DIN 69871 Form AD
• Clamping Ø 25 mm, bore tolerance H4
• SK40 steep taper, compact A = 35 mm

Dependable precision and conformity for repeatable machining

The holder is designed to deliver consistent tool concentricity and simple interchangeability on machines with an SK40 taper. Built to DIN 69871 Form AD specifications, the device ensures predictable seating and a defined shank-to-spindle interface that reduces runout and supports longer cutter life. The presence of a Weldon flat secures lateral torque transfer, which is especially important when machining with single-sided drives or heavy radial loads; this translates into fewer tool changes and more stable cycle times on production and maintenance tasks.

Compatibility with cylindrical-shank cutters and lateral drive standards

Made for tools with a cylindrical shank and a side drive per DIN 1835-B, the toolholder accepts a 25 mm clamping diameter with a bore tolerance H4, providing a precise fit for standard shank diameters. The bore tolerance is significant because it limits radial play, improving repeatability when swapping cutters. Using standardised interfaces facilitates tool sourcing and reduces setup complexity in mixed production environments where compatibility and interchangeability matter.

Compact design that supports practical workshop workflows

With an overall diameter of 50 mm and a projection length A = 35 mm, the compact construction reduces interference in tight tool zones while keeping the effective clamping length sufficient for rigid engagement. The SK40 steep taper provides high axial stiffness and fast, reliable seating in the machine spindle. For shops that balance spindle dynamics and accessibility, this holder offers a practical compromise between rigidity and compactness, making it suitable for both manual milling machines and CNC equipment.

Safe mounting practice and operational reliability

Correct mounting and cleanliness of the taper interface are essential for dependable performance; regular inspection of seating surfaces and the Weldon flat maintains repeatability and operational safety. The product is intended for standard machine tool use and benefits from straightforward maintenance: keep contact surfaces free of burrs and debris, tighten to the recommended pull stud torque and verify runout after mounting. For specification questions or application matching, Metav Werkzeuge provides technical guidance and selection support to align toolholder choice with machining requirements.

Contact Metav Werkzeuge for tailored advice on securing the TECWERK Weldon face clamping holder (SKU 2000833743NW) and to arrange prompt delivery from Emmerich to the workshop bench

Technical data

• Article number: 2000833743NW
• Norm: DIN 69871 Form AD
• Product type: Face clamping holder (Flächenspannfutter)
• Brand: TECWERK

Facts

• Diameter: 50 mm
• Clamping diameter (Spann-Ø d): 25 mm
• Projection A: 35 mm
• Bore tolerance: H4

Special features

• Weldon flat (Weldon) for lateral drive
• Steep taper: DIN 69871 Form AD
• For tools with cylindrical shank and side drive to DIN 1835-B
• Shank interface: SK40

FAQ

What spindle taper does this holder use?
The TECWERK Weldon face clamping holder is designed for an SK40 spindle interface in accordance with DIN 69871 Form AD.

Which tool shank diameter is compatible with this holder?
The holder accepts tools with a 25 mm shank diameter; the clamping bore is manufactured to H4 tolerance to ensure a precise fit.

Is the lateral drive provided by a Weldon flat?
Yes — the product features a Weldon flat for positive lateral drive transfer and secure torque transmission.

What are the key dimensions to check for machine compatibility?
Relevant dimensions include the outer diameter 50 mm, projection A = 35 mm, and clamping bore 25 mm with H4 tolerance; these determine clearance and engagement with the spindle.

Can the holder be used on both manual and CNC milling machines?
The design and SK40 taper make the holder suitable for both manual and CNC machines where a DIN 69871 Form AD interface and Weldon lateral drive are required.

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