270mm Self-Centering Extra-Flat Three-Point 3-Jaw Turning Chuck, 2250 kgf Clamping Force - Vertex

Take advantage of the combination of self-centring performance, extra-flat profile and high clamping force for secure, repeatable turning operations; order the chuck directly via Metav Werkzeuge or consult our technical team for application advice.

Vertex VNBK-8 three-jaw self-centring lathe chuck, extra-flat, Ø270 mm

The VNBK-8 is a self-centring, extra-flat three-jaw lathe chuck designed for precision turning where reduced overhang and secure clamping are essential.

• Self-centring three-jaw design for concentricity
• Extra-flat profile for reduced overhang
• Ø270 mm nominal diameter
• 2,250 kgf clamping force for secure hold

Steady hold for consistent surface quality

The combination of a self-centring jaw system and a defined clamping force ensures stable workholding across repeated cycles. The chuck’s rated 2,250 kgf clamping force provides a measurable basis for process reliability: higher holding power reduces micro-movement during cutting, which in turn improves surface finish and repeatability. For shops focused on throughput, this translates into fewer reworks and more predictable cycle times. The design balances grip and accessibility so that common turning tasks benefit from both security and operational speed.

Shorter overhang for stiffer setups and safer machining

The extra-flat profile reduces the distance between the workpiece and the spindle face, increasing system stiffness and reducing deflection under load. For medium-sized components the Ø270 mm nominal diameter offers a good compromise between gripping range and compactness, allowing closer tool approach and improved cutting stability. A flatter chuck body also eases clearance for tooling and fixtures, which can be particularly helpful on machines with limited turret or tailstock travel. This mechanical advantage supports tighter tolerances and safer, more efficient set-ups.

Practical design that speeds up shop routines

Engineered as a three-jaw, self-centring unit, the chuck simplifies centring tasks: jaws move simultaneously to centre the workpiece, shortening set-up time and reducing alignment errors. The unit mass of 20.2 kg contributes to rotational stability without excessive inertial load on the spindle. Constructed to meet workshop demands, the chuck is suitable for repeated mounting and removal while maintaining consistent concentricity. The robust mechanical layout favours everyday use in production and jobbing environments where a balance of precision and practicality is required.

Contact Metav Werkzeuge for tailored advice on selecting the right Vertex VNBK-8 configuration for specific turning tasks; call +49 2822 7131930, email info@metav-werkzeuge.com or message via WhatsApp +49 170 2837271 to discuss compatibility and delivery from Emmerich

Technical Data

• Article number: VNBK-8
• GTIN: 4061905086052
• Manufacturer: Vertex

Facts

• Diameter: 270 mm
• Weight: 20.2 kg
• Clamping force: 2,250 kgf

Special features

• Self-centring three-jaw configuration
• Extra-flat profile
• SKU: VNBK-8
• eClass: 21020401

FAQ

What applications is this chuck suited for?
The VNBK-8 three-jaw self-centring lathe chuck by Vertex is suited for general turning operations where reduced overhang and secure clamping are required, supporting repeatable machining processes.

How much clamping force does the VNBK-8 provide?
The VNBK-8 provides a clamping force of 2,250 kgf, giving a clear, measurable indicator of hold-down capability during cutting.

Can the chuck be used on standard spindle noses?
The VNBK-8 is designed as a back-mounted lathe chuck; mounting compatibility should be confirmed with spindle specifications and Metav Werkzeuge can assist with matching options.

How does the extra-flat design benefit machining?
An extra-flat profile shortens overhang, improving system stiffness and cutting stability; the Vertex VNBK-8’s flat body helps achieve tighter tolerances and easier tool access.

What maintenance is recommended for long-term reliability?
Regular cleaning of jaw guides and periodic lubrication of the mechanical components will help maintain concentricity and the secure clamping behaviour of the VNBK-8.

Manufacturer: Vertex Machinery Works Co., Ltd.; No. 296, Sec. 1, Feng Shih Road, Fengyuan District, Taichung City 420, Taiwan