48mm Face Clamping Chuck Weldon 16mm Shank Bore, DIN 69871 Form AD 100mm - TECWERK

Take advantage of the combination of secure Weldon torque transfer, a precise 16 mm clamping diameter and standard SK40 taper for reliable tool holding in production environments. Order directly via Metav Werkzeuge or consult our specialists for application advice.

Weldon face-clamping holder (DIN 69871 Form AD), SK40, 16 mm bore – TECWERK

The Weldon face-clamping holder (DIN 69871 Form AD) is a SK40 taper tool holder designed to accept tools with a cylindrical shank and a lateral drive flat according to DIN 1835‑B, delivering secure retention for machining tasks.

• Weldon lateral drive for reliable torque transfer
• Steep taper DIN 69871 Form AD for precise seating
• 16 mm clamping diameter with H4 bore tolerance

Reliable torque transfer for demanding machining

The Weldon lateral drive ensures positive mechanical engagement with tools that have a side drive flat, eliminating slippage under high loads. With a 16 mm clamping diameter, the holder supports common solid shank tools while maintaining concentricity, which reduces vibration and improves surface finish. This combination is designed to secure torque transmission in milling and drilling operations without sacrificing repeatability.

Seamless integration with SK40 spindle systems

Featuring a steep taper compliant with DIN 69871 Form AD, the holder seats precisely in any standard SK40 spindle. The standardised taper geometry reduces runout at the tool interface and simplifies tool changes, enabling consistent alignment every time the taper is engaged. For shops using conventional spindle tooling, this results in measurable process stability and reduced setup time.

Engineered tolerances for consistent accuracy

A tight bore tolerance of H4 minimises radial play between tool shank and holder, which supports reproducible concentricity and tool life. The controlled fit prevents micro-movements under cutting forces and contributes directly to dimensional stability of finished parts. Explaining the tolerance, H4 indicates a small positive allowance that is suitable for precision tooling applications requiring repeatable performance.

Balanced reach and rigidity for workshop versatility

With a projection length of 100 mm and an outer diameter of 48 mm, the design balances reach with stiffness to suit a variety of machining setups. The holder is intended for tools with cylindrical shanks and lateral drive flats per DIN 1835‑B, providing a compact mounting solution that maintains rigidity where it matters. The compact body and standard interface help keep clamping forces effectively transferred to the tool shank for robust performance.

For tailored SK40 tooling support and prompt supply from Metav Werkzeuge, contact our consultants at info@metav-werkzeuge.com or call +49 2822 7131930 for application-specific advice and ordering.

Technical Data

• Article number: 2000833734NW
• Label: Flächenspannfutter DIN 69871AD Weldon Spann-D.16mm SK40 A.-L.100mm TECWERK
• Norm: DIN 69871
• Product type: Face-clamping holder
• Manufacturer: TECWERK

Facts

• A: 100 mm
• D: 48 mm
• Clamping Ø d: 16 mm
• Bore tolerance: H4
• Packaging unit: 1

Special features

• Weldon lateral drive
• Steep taper per DIN 69871 Form AD
• Accepts cylindrical shanks with lateral drive flat (DIN 1835‑B)
• Designation: SK40
• Bore tolerance H4

FAQ

What tool shank types are compatible with this holder?
The holder accepts tools with a cylindrical shank and a lateral drive flat in accordance with DIN 1835‑B; the lateral flat engages the Weldon drive for secure torque transfer.

Can this holder be used with any SK40 spindle?
Yes, the steep taper conforms to DIN 69871 Form AD, ensuring compatibility and precise seating in standard SK40 spindles.

How does the H4 bore tolerance affect performance?
The H4 bore tolerance reduces radial play between tool and holder, improving concentricity and repeatability under cutting loads for better surface finish and tool life.

What are the main dimensional limits to consider for fixture design?
Key dimensions are a projection (A) of 100 mm, outer diameter (D) of 48 mm, and a clamping diameter of 16 mm, which should be accommodated in fixture and toolpath planning.

Is the holder suitable for high-torque milling operations?
The combination of a Weldon lateral drive and a secure 16 mm clamping interface provides robust torque transfer suitable for demanding milling tasks when used within the holder’s specified limits.

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