150mm Grooving Clamping Holder 4mm Cut Width, 25mm Head Width, 20mm Max Depth, Right-Hand, 4C DGN Compatible - Teknik Makina

Combining the right‑hand cutting orientation, a 4 mm maximum cutting width and a rigid 25 mm clamp height, the D777TM delivers stable, repeatable parting and grooving results; order this tool via Metav Werkzeuge or consult our specialists for application guidance.

Parting and Grooving Tool Holder D777TM — Right‑hand, 4 mm cutting width (Teknik Cutting Tools)

The Parting and Grooving Tool Holder D777TM is a right‑hand clamp holder engineered for precision parting and grooving tasks using 4C DGN indexable inserts in modern turning centres

• Right‑hand cutting orientation
• 4 mm maximum cutting width
• Compatible with 4C DGN inserts (ISCAR)
• 150 mm overall length for deep cuts

Consistent, high‑precision parting and grooving

The D777TM is designed to deliver repeatable results on series turning operations through its defined right‑hand geometry and narrow cutting capacity. The 4 mm cutting width is optimised for typical parting and shallow grooving applications, enabling accurate control of the cut and predictable chip formation. By using standard 4C DGN indexable inserts, the holder combines proven insert technology with a compact clamping system, which reduces setup variation and supports stable diameter control on finished components.

Robust clamp design for reduced vibration and improved tool life

A compact clamping body with nominal dimensions of 25 mm height and 25 mm width gives the holder a rigid interface between toolpost and insert head. The resulting torsional stiffness lowers deflection during engagement and thus reduces the risk of chatter when performing plunge cuts of up to 20 mm. The tool’s mass of 0.709 kg contributes to damped cutting dynamics without compromising rapid tool changes, helping to extend insert life and maintain consistent surface quality across batches.

Ready for straightforward integration into existing toolsets

Produced to the ISO designation 2525 and compatible with the 4C‑R DGN boring bar family, the D777TM fits established workshop toolholders and quick‑change systems. Compatibility with ISCAR‑type inserts ensures access to a broad range of grades and chipbreaker geometries suited to different materials and cutting conditions. The straightforward clamp arrangement and standardised interface shorten setup times and simplify inventory management, making this holder a practical choice for workshops seeking consistent performance with minimal adaptation.

Practical applications and operational benefits

Ideal for turning centres and lathes where precise parting or groove generation is required, the holder supports controlled plunging and lateral cuts within its dimensional limits. The 150 mm overall length provides reach for deeper features while keeping overhang acceptable for general turning work. By pairing the holder with the appropriate insert grade, operators can balance economy and performance, achieving efficient material removal and stable edges on components destined for assembly or further processing.

Contact Metav Werkzeuge for procurement and technical guidance on the Teknik Cutting Tools D777TM — available from Emmerich with reliable supply and application advice

Technical Data

• Article number: D777TM
• Manufacturer: Teknik Makina
• Designation: Parting and grooving tool holder (Stechklemmhalter)
• SKU: D777TM

Facts

• Overall length: 150 mm
• Cutting width: 4 mm
• Maximum plunge depth: 20 mm
• Clamp height: 25 mm
• Cuthead width: 25 mm
• Body width: 25 mm
• Weight: 0.709 kg

Special features

• Compatible inserts: 4C DGN
• Compatible insert manufacturer: ISCAR
• ISO designation: 2525
• Compatible boring bar: 4C‑R DGN
• Cutting direction: Right‑hand

FAQ

What cutting direction is the holder designed for?
The holder is configured for right‑hand cutting; the D777TM operates with a right‑hand feed and geometry for standard lathe setups.

Which inserts fit this tool holder?
The tool holder accepts 4C DGN indexable inserts and is specified for ISCAR‑compatible grades.

What is the maximum plunge depth for parting operations?
The holder supports a maximum plunge depth of 20 mm, as indicated in the technical data for stable parting passes.

Is the D777TM compatible with quick‑change boring bars?
Yes — the holder is compatible with the 4C‑R DGN boring bar designation and standardised interfaces.

How long is the holder and how does this affect overhang?
With an overall length of 150 mm, the D777TM provides reach for deeper grooves while maintaining acceptable rigidity for general turning tasks.

Manufacturer / Responsible: 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