50mm Face Chuck HSK‑A63 Weldon 18mm Clamping Diameter, DIN 69893 Form A - TECWERK

Combining a compact 50 mm body with a secure Weldon clamping face and the HSK‑A63 interface delivers stable, repeatable toolholding for demanding machining tasks; the 18 mm clamping diameter and bore tolerance H4 further ensure precise seating and reduced runout. Order the TECWERK Weldon face clamping holder directly via Metav Werkzeuge or consult their product specialists for application advice.

TECWERK Weldon face clamping holder HSK‑A63 — 18 mm clamp, Ø 50 mm

A TECWERK Weldon face clamping holder for HSK‑A63 spindles, designed to clamp cylindrical‑shank tools with a lateral driving flat to DIN 1835‑B for secure torque transmission.

• Weldon clamping for 18 mm shanks
• HSK‑A63 hollow taper shank (Form A)
• Compact body Ø 50 mm, length 80 mm
• Bore tolerance H4 for tight fit

Stable, repeatable toolholding for accurate machining

The HSK‑A63 hollow taper interface to DIN 69893 Form A provides a direct, rigid connection between spindle and holder, improving concentricity and reducing micro‑movement under load. By combining the hollow taper with a Weldon clamping face, the system offers both axial location and positive rotational drive, which translates into measurable improvements in repeatability and reduced machining scatter. This stability supports consistent surface finish and contributes to extended tool life.

Positive drive for cylindrical shank tools with lateral flat

Designed for tools with a lateral driving flat as specified in DIN 1835‑B, the Weldon arrangement locks the tool against rotation while the holder’s clamping diameter of 18 mm secures the shank. The combination of a lateral flat and tight bore tolerance H4 means torque is transmitted through geometry rather than friction alone, lowering the risk of slippage during interrupted cuts and heavy milling operations. As a result, the holder is particularly suitable where secure, direct drive is essential.

Compact design for accessibility and process flexibility

With a body diameter of 50 mm and an overall length 80 mm (A), the holder balances stiffness with accessibility in confined setups. The compact profile aids tool change clearance and fixture design while preserving the axial and radial support necessary for precision work. The hollow taper shank design also minimises thermal growth effects and enables quick mounting in HSK‑A63 tooling systems, supporting efficient changeovers in medium‑ to high‑mix production environments.

Engineered tolerances and workshop reliability

Attention to tolerances, notably the H4 bore specification, underpins consistent centring and interchangeability across the toolroom. The welded clamping principle and standardised interface simplify inspection routines and reduce setup variation, delivering tangible gains in productivity. For purchasers seeking a dependable clamping solution, this holder integrates industry standards to support predictable results and a robust process chain.

Choose the TECWERK Weldon holder for reliable HSK‑A63 toolholding and contact Metav Werkzeuge for procurement and technical advice from Emmerich's quality team

Technical data

• Article number: 2000832391NW
• Manufacturer: TECWERK
• Product type: face clamping holder
• Interface: HSK‑A

Facts

• Clamping Ø: 18 mm
• Body Ø: 50 mm
• Length A: 80 mm
• Standard: DIN 69893 Form A
• Bore tolerance: H4

Special features

• Weldon flat for DIN 1835‑B shanks
• Hollow taper shank to DIN 69893 Form A
• For cylindrical shanks with lateral driving flat
• Tight bore tolerance H4

FAQ

How does the TECWERK Weldon face clamping holder secure tools? The TECWERK Weldon face clamping holder secures cylindrical‑shank tools via a positive‑drive Weldon flat to DIN 1835‑B and an 18 mm clamping bore with H4 tolerance for reliable concentricity.

Is this holder suitable for HSK‑A63 spindles? Yes — the holder uses a hollow taper shank to DIN 69893 Form A and is intended for direct mounting in HSK‑A63 systems, offering a rigid, repeatable connection.

What benefits does the bore tolerance H4 provide? Bore tolerance H4 supports tight concentric fit and repeatable seating, reducing runout and improving the predictability of the machining process with the TECWERK holder.

Which operations are appropriate for this type of holder? The holder is intended for operations requiring positive rotational drive of cylindrical shank tools—such as milling and interrupted cutting—where the Weldon flat and secure clamping reduce the risk of slippage.

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