50mm Face Clamping Chuck Weldon Shank DIN 69871 Form AD, 8mm Clamping Diameter - TECWERK

Benefit from secure, DIN‑based toolholding: the steep taper and Weldon clamping combine to reduce runout and ensure positive torque transmission for cylindrical‑shank cutters. With an SK40 interface, 8 mm clamping diameter and a 50 mm projection length, this holder supports consistent milling performance. Order the holder directly via Metav Werkzeuge or consult our specialists for application advice.

End mill holder DIN 69871AD (Weldon) SK40 — clamping Ø 8 mm (TECWERK)

A robust End mill holder DIN 69871AD for tools with a cylindrical shank and lateral driving flat, designed for use in SK40 spindles.

• Steep taper DIN 69871 Form AD
• Weldon clamping for cylindrical shanks
• Clamping diameter 8 mm, bore tolerance H4
• Designed for SK40 spindles, A = 50 mm

Precision grip for reduced runout and longer tool life

The combination of a clamping diameter 8 mm with bore tolerance H4 provides a consistently tight fit that minimises radial play. Reduced eccentricity leads to lower runout, which in turn improves surface finish and extends cutter life; the result is a measurable improvement in repeatability for batch production. The specification DIN 69871 Form AD ensures the holder matches standard spindle interfaces, facilitating predictable concentricity in demanding machining tasks.

Secure torque transfer and compatibility with SK40 systems

Fitted with a Weldon drive for lateral engagement per DIN 1835-B, the holder guarantees positive drive between tool and arbor, preventing slippage under axial and torsional load. The SK40 interface provides a steep taper seating that simplifies tool change procedures while maintaining axial stability during milling operations. For workshops standardised on SK40 tooling, this configuration reduces setup time and supports higher process reliability.

Stable geometry for industrial machining workflows

A compact geometry with A = 50 mm projection and D = 28 mm body diameter offers a balance between accessibility and rigidity, limiting vibration during cutting. The construction supports consistent clamping force over repetitive cycles, which is beneficial where tool changes are frequent. The holder’s design focuses on dependable mechanical engagement rather than complex additional functions, making it a pragmatic choice for production environments seeking robust, low‑maintenance toolholding.

For application advice or to check stock of the TECWERK SK40 end mill holder (SKU 2000833720NW), contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss compatibility and dispatch from Emmerich

Technical data

• Article number: 2000833720NW
• Product type: End mill holder (Flächenspannfutter)
• Brand: TECWERK
• Standard: DIN 69871 Form AD

Facts

• Projection length A: 50 mm
• Body diameter D: 28 mm
• Clamping Ø d: 8 mm
• Bore tolerance: H4
• Interface: SK40

Special features

• Weldon clamping (lateral driving flat)
• Designed for cylindrical shanks to DIN 1835‑B
• Steep taper according to DIN 69871 Form AD

FAQ

What shank types are compatible with this holder?
The TECWERK end mill holder (SKU 2000833720NW) is made to accept cylindrical shanks with a lateral driving flat in accordance with DIN 1835‑B (Weldon style).

What is the clamping diameter and tolerance?
Clamping diameter is 8 mm with a bore tolerance of H4, providing a tight fit for minimal radial runout.

Which spindle interface does the holder use?
The holder uses the steep taper DIN 69871 Form AD and is specified for SK40 spindles.

What are the principal dimensions to consider for setup?
Key dimensions are projection length A = 50 mm and body diameter D = 28 mm, which influence reach and rigidity during machining.

How does the Weldon clamping affect performance?
Weldon clamping offers positive mechanical drive via the lateral flat, improving torque transmission and reducing the risk of tool slippage under heavy cutting forces.

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