40mm Angle Turning Head 90° For R390-11T3 Indexable Inserts, M2.5x7 Torx Screw - Teknik Makina

Take advantage of the combination of 90° cutting geometry, broad compatibility with Sandvik R390-11T3 indexable inserts and a compact 16 mm shank for reliable workshop integration; order the Corner Turning Head directly via Metav Werkzeuge or ask our consultants if needed

Corner Turning Head — 90° turning head for R390-11T3 indexable inserts (Teknik Makina)

The Corner Turning Head is a 90° external turning head designed for shoulder and corner machining with R390-11T3 indexable inserts, suitable for toolposts with a 16 mm shank diameter

• 90° cutting angle for precise shoulder turning
• Compatible with Sandvik R390-11T3 inserts
• 16 mm shank diameter for standard toolholders
• Torx M2.5×7 screw with T8 key for secure clamping

Accurate corners and predictable results for production turning

The compact turning head delivers a defined 90° cutting geometry, which makes shoulder and corner machining repeatable and reliable in series production. By using a head designed for the R390-11T3 insert form, the system ensures consistent chip flow and contact conditions; this simplifies process planning and reduces set-up variation. The combination of a standardised shank diameter and a short overall length supports stable clamping in modern tool posts, lowering vibration and improving surface finish for turned components.

Secure clamping and fast insert replacement to reduce downtime

Clamping is managed via a Torx M2.5×7 screw operated with a T8 key, providing firm retention of the indexable insert and straightforward replacement. Quick access to the clamping screw means insert changes are carried out with minimal interruption, which increases machine uptime and productivity. The head is specified with five cutting edges and a compact mass (approx. 0.225 kg), resulting in balanced handling during set-up and steady performance in short-to-medium batch work.

Designed for workshop compatibility and easy integration

With a 16 mm shank diameter and a head diameter of 40 mm combined with an overall length of 40 mm, the unit fits many standard holders without adjustment. The geometry is intended to match typical turning sequences used in maintenance and small-batch manufacturing, enabling retrofit into existing tool packs. Where toolholder and insert standardisation matters, the compatibility with Sandvik insert dimensions reduces the need for multiple insert types, simplifying stock and reordering routines.

Practical advantages that support everyday metalworking

The turning head’s compact dimensions and defined contact geometry help maintain stable cut conditions on interrupted cuts and shoulder faces. For operations where repeatability is essential, the head’s construction supports reproducible seat and clamping conditions, translating into consistent tolerances and fewer rejected parts. The product is appropriate for machining tasks in industrial workshops and precision maintenance where robust, standard-compatible tooling drives operational efficiency.

For reliable corner turning with proven Sandvik R390-11T3 compatibility, request procurement advice or place an order through Metav Werkzeuge in Emmerich — contact info@metav-werkzeuge.com or call +49 2822 7131930 to discuss specifications and availability

Technical Data

• Article number: T577TM
• Manufacturer: Teknik Makina
• Brand: Teknik Makina
• Compatible inserts: R390-11T3 (Sandvik)
• Torx screw: M2.5×7
• Torx key: T8

Core technical figures

• Shank diameter (aufnahme): 16 mm
• Head diameter (durchmesser): 40 mm
• Overall length (gesamtlänge): 40 mm
• Cutting angle (schnittwinkel): 90°
• Number of cutting edges (schneiden): 5
• Weight: 0.225 kg

Special features

• Designed for R390-11T3 indexable inserts
• Secure Torx clamping system
• Compact construction for standard toolholders
• Suitable for shoulder and corner turning
• SKU: T577TM

FAQ

Which insert type fits this turning head?
The head is designed for R390-11T3 indexable inserts and matches Sandvik insert geometry for reliable seating and repeatable cutting conditions.

What shank size is required for mounting?
Mounting requires a toolholder that accepts a 16 mm shank; the head’s compact length and diameter support common toolpost arrangements.

How is the insert secured and which key is needed?
Insert retention is achieved with a Torx M2.5×7 screw; a T8 Torx key is specified for tightening and loosening.

Is the head suited for heavy-duty roughing?
The compact geometry and defined 90° cutting angle are optimised for shoulder finishing and general turning; for heavy roughing, assess machine power and insert grade before use with this head.

What are the physical dimensions and weight?
The turning head has a 40 mm head diameter, 40 mm overall length and weighs approximately 0.225 kg, supporting balanced handling and stable clamping.

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