250mm Extension For Screw-In Milling Cutter 25mm Shank, M12 Thread - Teknik Makina

The VT519TM extension combines a 250 mm overall length with a 25 mm shank and an M12 threaded connection to extend tooling reach while maintaining machining stability; order the extension directly from Metav Werkzeuge or consult our specialists for specification support.

VT519TM Extension for Screw-in Milling Cutters — 250 mm overall length, M12 thread | Teknik Makina

A robust VT519TM extension for screw-in milling cutters designed to increase reach in milling operations where a longer tool projection is required without sacrificing stability

• 250 mm overall length for extended reach
• M12 threaded connection for secure mounting
• 25 mm shank diameter for rigid support

Greater reach without compromising rigidity

The extension delivers an extended working length of 250 mm, enabling access to deep pockets and hard-to-reach contours while preserving tool stability. The 25 mm shank diameter provides a solid bearing surface in the spindle or holder, which helps to reduce vibration and runout during aggressive cuts. By combining increased length with a substantial shank cross-section, the component supports consistent machining accuracy and predictable surface finish, making it suitable for extended operations where standard holders would limit access.

Secure, standardised mounting for screw-in cutters

Designed for compatibility with threaded cutter systems, the extension features an M12 thread and an insertion opening of 20.7 mm, and a taper seating length of 40 mm to ensure reliable axial alignment. The internal geometry supports stable engagement of screw-in cutters: the cutter screws onto the arbor and the extension maintains concentricity, reducing the likelihood of misalignment. The straightforward threaded connection permits rapid tool changes while the conical seat improves load transfer between cutter and extension.

Integrates into extended milling setups and CNC workflows

The component is aimed at professional workshops and production environments that require extended tooling reach in milling or finishing tasks. The increased projection supports specialised set-ups where access constraints are a primary concern, and the solid construction contributes to predictable tool life. The extension is appropriate for both CNC machining centres and rigid manual milling machines where threaded cutter systems are already in use, allowing existing toolsets to be adapted for longer-reach applications without redesigning fixturing.

Practical handling and specification guidance

With a net weight of 1.165 kg, the extension has sufficient mass to damp minor vibrations while remaining manageable during handling and tool changes. The 40 mm taper length and the 20.7 mm cutter opening are key dimensions for matching with existing screw-in cutters; customers are advised to verify cutter internal diameters and manufacturer torque recommendations before assembly. For preparations involving balancing or special holders, the measured shank and thread data support planning for clamping and runout control in high-precision setups.

For ordering and detailed specification assistance for this Teknik Makina extension, please contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or call +49 2822 7131930 — our consultants provide tailored advice for integrating the VT519TM into existing toolchains

Technical data

• Article number: VT519TM
• Manufacturer: Teknik Makina
• Weight: 1.165 kg

Measurements / core data

• Overall length: 250 mm
• Shank diameter: 25 mm
• Cutter opening (inner): 20.7 mm
• Taper seating length: 40 mm

Design & features

• Thread: M12
• Intended for screw-in milling cutter systems
• Solid, single-piece construction

FAQ

What is the overall length of the extension?
The VT519TM extension has an overall length of 250 mm, providing extra reach for deep or obstructed machining tasks.

Which thread is used for mounting?
Mounting is via an M12 threaded connection, designed for secure engagement with compatible screw-in cutter systems.

What shank and cutter opening diameters are specified?
The extension has a 25 mm shank diameter and an internal cutter opening of 20.7 mm to receive threaded milling cutters.

How long is the taper seating for the cutter?
The conical seating length is 40 mm, which supports accurate axial alignment and transmission of cutting forces.

Is the VT519TM suitable for CNC and manual machines?
Yes; the extension is intended for integration into both CNC machining centres and rigid manual milling setups that employ screw-in cutter tooling.

Manufacturer: Teknik Cutting Tools, Buyukkayacık OSB Mah.422 Nolu Sokak.No:9, Selcuklu/KONYA/TURKEY / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; eMail: info@metav-werkzeuge.com