ST20x50L Milling Extension With ER20M Collets, Set Of 12 - Vertex

The combination of extended reach, secure ER20M clamping and robust build ensures stable, low-runout machining for demanding setups; order the Vertex milling extension directly via Metav Werkzeuge or consult our technical team for application advice.

Milling extension with collet chuck ST20×50L – ER20M (Vertex)

A milling extension designed for longer-reach machining and compatibility with ER20M collet systems, suitable for integration into standard ST20 toolholders

• Precise ER20M collet compatibility
• ST20×50L shank for extended reach
• Robust construction, low runout performance
• Supplied as a ready-to-fit set

Greater reach with consistent rigidity

The extension provides an extended working length while maintaining rigidity for stable cutting conditions. The ST20×50L shank increases clearance where tool overhang is required, reducing the need for long, flexible cutters that can vibrate and degrade surface finish. By placing the clamping interface closer to the spindle with a matched collet system, the assembly improves repeatability and helps keep runout to a minimum, which is crucial for precision milling and repeatable hole-making.

Secure clamping and easy integration

Designed around the ER20M collet standard, the holder ensures concentric clamping and reliable axial retention. The collet principle distributes clamping forces uniformly, which lowers the risk of tool slip under load and supports consistent cutting depths. Integration into existing toolholder systems is straightforward thanks to the standardised shank form factor, enabling quick tool changes and predictable machine behaviour without extensive machine-side modifications.

Practical benefits for workshop productivity

Delivered as a complete set with collet compatibility, the product streamlines tool management and reduces downtime associated with sourcing special holders. The moderate mass of 1.3 kg contributes to a stable system inertia without imposing excessive spindle load during rapid traverses. For production environments and prototyping alike, the extension supports precision tasks where additional clearance or access to recessed features is required, improving process reliability and component quality.

For specification checks, delivery lead times or to request the Vertex milling extension V-696A for integration into a specific machining setup, contact Metav Werkzeuge in Emmerich by email or phone; our technical consultants will advise on fitment and availability

Technical data

• Article number: V-696A
• GTIN: 4061905095900
• Manufacturer: Vertex

Facts

• Weight: 1.3 kg
• Pieces per set: 12
• Shank size: ST20×50L

Special features

• Collet type: ER20M
• Supplied as a set with collet compatibility
• Product family: Vertex

FAQ

What machines accept this extension?
The Vertex milling extension V-696A fits machines and toolholders that accept an ST20 shank and that use ER20M collet systems; it is intended for standard milling and CNC spindles with compatible interfaces.

What is included in the delivery set?
The delivery comprises the milling extension set by Vertex (SKU V-696A) supplied with the ER20M-compatible configuration and the associated items needed for installation.

Why is the ST20×50L dimension important?
The ST20×50L designation indicates the shank form and extended length; this affects access and clearance on the workpiece and should be chosen where additional reach is required without resorting to longer, flexible tooling.

Can this extension reduce tool vibration?
When used with the correct collet clamping and in appropriate setups, the extension improves clamping stability and can reduce vibration compared with long unsupported cutters, enhancing surface finish and tool life for many tasks.

How heavy is the tool and what does that mean for spindle load?
The tool assembly weighs 1.3 kg; this moderate mass offers a balance between stability and spindle load, supporting steady cutting while remaining compatible with typical milling spindles.

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