80mm Indexable Turning Head 90° For R390-1704 Indexable Inserts, M3.5x8.5 Torx Screw - Teknik Makina

Take advantage of a compact, purpose-built 90° turning head that combines precise corner machining with secure clamping and straightforward serviceability; the robust design and compatibility with Sandvik R390-1704 indexable inserts support consistent production results. Order the Teknik Makina tool directly via Metav Werkzeuge or consult the Metav team for application advice.

Eckmesserkopf T411TM — 90° turning head for R390-1704 indexable inserts (Teknik Makina)

The Eckmesserkopf is a compact 90° turning head for R390-1704 indexable inserts, engineered for accurate corner machining and reliable mounting in demanding turning operations.

• 90° cutting angle for accurate corner machining
• Compatible with Sandvik R390-1704 inserts
• 27 mm shank for secure toolholder mounting
• Torx M3.5×8.5 screw, T15 key fastening

Accurate corner machining with 90° geometry

The 90° geometry delivers a predictable tool path for corner and shoulder turning, reducing the need for secondary finishing. The combination of a defined 90° cutting angle and compatibility with R390-1704 indexable inserts ensures consistent contact conditions at the cutting edge, which contributes to repeatable surface quality. For operators unfamiliar with insert design, indexable inserts are replaceable cutting tips that allow fast renewal of cutting edges without regrinding, lowering total tool life costs while maintaining process stability.

Stable clamping and straightforward fastening for repeatable results

A 27 mm shank provides a rigid connection to the turret or holder, helping to minimise vibration and runout during heavy cuts. The insert is secured with a Torx M3.5×8.5 screw and released with a T15 key, a common fastening standard that simplifies maintenance and tool change procedures in the workshop. The secure clamping arrangement reduces the risk of insert movement under load, improving dimensional accuracy and prolonging insert life.

Compact form that supports productivity in tight setups

With a head diameter of 80 mm and an overall length of 52 mm, the toolhead is designed for access into constrained bores and close-quartered turned features. The relatively compact profile, combined with a weight of 1.168 kg, balances rigidity with manoeuvrability on the turret. The specification of 7 cutting edges indicates the number of usable cutting positions inherent to the compatible insert family, enabling multiple indexed positions before replacement and supporting continuous production runs.

Compatibility, handling and workshop integration

The toolhead is specified for use with Sandvik R390-1704 inserts, making it straightforward to source replacements from common industrial suppliers. Mounting requires only a T15 Torx key to remove or clamp the M3.5×8.5 screw, simplifying routine insert changes and minimising downtime. The robust mechanical features mean that the corner turning head integrates readily into established turning processes, offering predictable performance without additional special tool interfaces.

Contact Metav Werkzeuge for tailored application guidance on the Teknik Makina T411TM Eckmesserkopf and to confirm compatibility with specific machine turrets — eMail info@metav-werkzeuge.com or call +49 2822 7131930 for prompt assistance

Technical data

• Article number: T411TM
• Brand: Teknik Makina
• Product: Eckmesserkopf
• For: for R390-1704 Indexable Inserts
• Torque screw: M3.5×8.5
• Torx key: T15
• Compatible insert maker: Sandvik

Facts

• Shank diameter: 27 mm
• Overall length: 52 mm
• Diameter: 80 mm
• Weight: 1.168 kg
• Cutting angle: 90°
• Cutting edges: 7

Special features

• Suitable for R390-1704 indexable inserts
• Torx fastened insert clamping
• Compact head for tight machining zones
• SKU: T411TM
• Brand: Teknik Makina

FAQ

Which inserts fit this turning head?
The turning head accepts R390-1704 indexable inserts; the design is matched to the insert geometry specified for that family.

What is the shank diameter for mounting?
The shank diameter is 27 mm, providing a rigid fit for standard turret toolholders.

How is the insert secured and which key is required?
The insert is secured with an M3.5×8.5 Torx screw, removable and tightened using a T15 key for straightforward servicing.

What cutting angle does the toolhead provide?
The toolhead features a 90° cutting angle, optimised for accurate corner and shoulder turning operations.

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