200mm Extension For Screw-In Milling Cutter 25mm Shank 20.7mm Opening M12 Thread 40mm Taper Length 0.744kg - Teknik Makina

Take advantage of a practical combination of extended reach and secure clamping: the extension provides a 200 mm overall length with a robust M12 thread and a 25 mm shank diameter to maintain stiffness during deep milling operations. Order the extension directly via Metav Werkzeuge or contact our technical consultants for application advice.

Extension for screw-in cutters VT516TM — 200 mm overall length, M12 thread (Teknik Makina)

The Extension for screw-in cutters VT516TM is a purpose-made tool extension that increases reach for recessed and deep milling tasks while retaining tool stability for both CNC and manual machining applications

• 200 mm overall length for extended reach
• M12 threaded connection for secure mounting
• 25 mm shank diameter fits standard holders
• Accepts cutters with 20.7 mm receiving bore

Extended reach without sacrificing rigidity

Longer tool reach is often necessary for machining recessed features, but length can reduce stiffness and increase vibration. This extension solves that trade-off by offering a 200 mm overall length combined with a 25 mm shank diameter, which preserves axial and lateral rigidity compared with thinner extensions. The design reduces the need for multiple special-length cutters and therefore supports more efficient tool management in the workshop. Fewer tool changes and predictable deflection characteristics contribute to smoother feeds and more consistent surface finishes.

Secure seating and repeatable clamping for screw-in cutters

For screw-in milling cutters the connection quality determines repeatability. The extension uses an M12 thread and accepts cutters with a 20.7 mm receiving bore, while an internal 40 mm taper ensures precise seating and axial support. These features enable reliable torque transfer from the holder to the cutting head and help maintain concentricity during rotation. The combination of threaded retention and tapered contact gives a balance of positive locking and accurate alignment, which is particularly valuable when machining narrow pockets or when tool run-out must be minimised.

Practical workshop advantages and handling

Weighing 0.744 kg, this extension is heavy enough to feel substantial yet light enough for straightforward handling during tool changes. The sturdy construction supports workshop routines in both small-scale shops and production environments, including CNC milling centres and manual machines. Fitment is straightforward: screw the cutter into the receiving bore and secure via the M12 thread, ensuring the taper seats fully. For operational safety and best results, final tightening should follow the cutter manufacturer’s torque recommendations and a balance check is advised for high-speed applications.

Contact Metav Werkzeuge for tailored application advice and to arrange supply from our Emmerich stock on +49 2822 7131930 or info@metav-werkzeuge.com

Technical data

• Article number: VT516TM

• Manufacturer: Teknik Makina

• Overall length: 200 mm

• Shank diameter: 25 mm

• Receiving bore for cutter: 20.7 mm

• Internal taper length: 40 mm

• Thread: M12

• Weight: 0.744 kg

Special features

• Designed for screw-in milling cutters
• Tapered seating for repeatable alignment
• M12 threaded retention for secure mounting
• Compatible with standard 25 mm toolholders

FAQ

Which cutters fit this extension?
The extension accepts screw-in milling cutters with a receiving bore of 20.7 mm; compatibility is ensured when the cutter’s seating matches the 40 mm taper and the M12 thread type.

Is the extension suitable for CNC use?
Yes, the extension is designed for both manual machines and CNC milling centres; the 25 mm shank diameter helps maintain rigidity under typical machining loads.

How should the cutter be mounted for safe operation?
Screw the cutter into the receiving bore, ensure the 40 mm taper is fully seated, then tighten to the cutter manufacturer’s recommended torque; balance checks are advised for high-speed milling.

What is the overall length and how does it affect machining?
The overall length is 200 mm, which increases accessibility for deep or recessed features while the larger shank diameter helps limit deflection compared with slimmer extensions.

Can the extension be used with different holder systems?
The extension is intended for standard holders accepting a 25 mm shank; confirmation of holder compatibility should be done against holder specifications.

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