125mm Stechklemmhalter 4mm Cut Width, 18mm Max Plunge, ISO 2020, Fits 4C MGM Inserts, 4C-L MGM Shank, Left-Hand Cutting, Internal Cooling - Teknik Makina

Combine the 4 mm cutting width with the compact 20 × 20 mm shank and 125 mm overall length to achieve stable, repeatable grooving operations; the left‑hand orientation and compatibility with Korloy 4C MGM inserts simplify tool selection. Order directly via Metav Werkzeuge or consult our specialists for application guidance.

Grooving clamping holder D617TM — left‑hand grooving toolholder with 20 × 20 mm shank (Teknik Cutting Tools)

A grooving clamping holder designed for left‑hand turning operations, offering a narrow 4 mm cutting width and an ISO 2020 shank for consistent mounting in compact toolposts

• 20 × 20 mm shank for secure clamping
• 4 mm cutting width for narrow grooves
• Left‑hand cutting direction for specific turning setups
• Compatible with Korloy 4C MGM inserts

Accurate grooves from a compact shank

The compact 20 × 20 mm shank and the ISO 2020 designation provide a familiar fitment for standard toolposts, reducing setup time and minimising run‑out. A smaller shank cross‑section concentrates rigidity where it matters, delivering consistent contact between holder and lathe. This stability translates into predictable groove geometry and reduced rework, making the holder especially suitable for small‑batch production and precision workshop use.

Controlled narrow cuts and secure plunge capacity

With a 4 mm cutting width and a maximum plunge depth of 18 mm, the holder is optimised for fine grooving and parting‑off operations that require controlled chip evacuation and minimal material disturbance. The left‑hand cutting orientation aligns with turning setups where tool approach from the left is required; this detail avoids guesswork during toolpath planning. In practical terms, the maximum plunge depth indicates the effective vertical reach of the cutting edge into the workpiece, helping to prevent overloads and maintain surface quality.

System compatibility that speeds up changeovers

Designed to accept Korloy 4C MGM inserts and to pair with the 4C‑L MGM bar designation, the toolholder integrates with common insert families to reduce inventory complexity. The overall length of 125 mm and a weight of 0.407 kg keep the assembly compact and simple to handle, while reliable clamping geometry ensures repeatable indexability of inserts. For workshops seeking efficiency, this combination lowers tooling downtime and supports a clear tooling strategy using well‑known insert standards.

Contact Metav Werkzeuge for tailored application advice on the Teknik Cutting Tools grooving clamping holder D617TM and secure precise recommendations from our Emmerich specialists

Technical data

• SKU: D617TM
• Manufacturer: Teknik Makina
• Designation: Grooving clamping holder

Dimensions & core data

• Shank height: 20 mm
• Shank width: 20 mm
• Cutting width: 4 mm
• Max plunge depth: 18 mm
• Overall length: 125 mm
• Weight: 0.407 kg
• Cutting direction: Left

Compatibility & features

• For inserts: 4C MGM
• Compatible insert maker: Korloy
• Shank ISO designation: 2020
• Toolholder bar designation: 4C‑L MGM
• Left‑hand grooving orientation

FAQ

What insert types fit this grooving holder?
The grooving clamping holder D617TM is designed for Korloy 4C MGM inserts and other inserts in the 4C MGM family, ensuring straightforward interchangeability on compatible turning centres.

Is the holder suitable for deep grooving tasks?
The holder supports a maximum plunge depth of 18 mm, which makes the D617TM appropriate for controlled, moderate‑depth grooving rather than heavy deep‑cut applications.

Which shank size does the toolholder require in the toolpost?
This toolholder features a 20 × 20 mm shank (ISO 2020), providing a standardised fit for toolposts accepting that shank cross‑section and promoting low run‑out.

Can the D617TM be used for parting‑off as well as grooving?
Yes—its 4 mm cutting width and secure clamping make the D617TM suitable for fine parting‑off and precision grooving where narrow cuts are required.

What advantages does the left‑hand orientation offer?
The left‑hand cutting direction of this holder aligns with turning setups that require tool approach from the left, simplifying toolpaths and improving process repeatability when that orientation is specified.

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