50mm S40T DDUNL Boring Bar Left-Hand For DN-- 1506 Inserts, 40mm Shank Diameter, 300mm Length - Teknik Makina

Take advantage of rigidity, precise indexing and extended reach for reliable internal turning. With a 40 mm shank and 300 mm overall length the tool supports stable, repeatable bore machining; order via Metav Werkzeuge or consult our specialists for application advice.

Boring bar S40T DDUNL – indexable-insert boring bar, 40 mm shank, left-hand cut (Teknik Cutting Tools)

The Boring bar S40T DDUNL is a left-hand indexable-insert boring bar designed for internal turning tasks where rigidity and fast insert changes are required in workshop and light production environments.

• 40 mm shank for rigid clamping
• 300 mm overall length for deep reach
• Compatible with DN-- 1506 indexable inserts
• Left-hand cutting orientation for reverse cuts

Maximised rigidity and reach for accurate bore machining

The S40T DDUNL boring bar offers rigidity through a substantial shank diameter of 40 mm, minimising deflection during heavy cuts and long overhangs. The 300 mm overall length provides extended reach for internal operations while maintaining stability; this combination reduces vibration and improves surface finish. Where repeatable bore diameter and concentricity are critical, the toolholder’s mass and geometry support consistent results across series production without complex setup changes.

Fast insert changes and efficient cutting geometry

Designed for DN-- 1506 indexable inserts, the holder enables quick insert replacement to keep machine uptime high. The tool’s cutting angle of 93° and a cutting height of 60 mm are configured to offer secure seating and predictable chip flow; this simplifies process planning and reduces scrap. The left-hand cutting orientation allows reverse-direction operations and offers flexibility when paired with compatible tool post arrangements. Overall, the indexable system delivers cost-effective maintenance and predictable tool life.

Suited to workshop and small-scale production workflows

With a weight of 2.848 kg and robust construction, this boring bar is aimed at engineers and machinists seeking a stable solution for internal turning in general workshop and light industrial settings. The item’s designation and ISO-style naming make it straightforward to match with existing tool inventories and holders. Backed by Teknik Cutting Tools manufacturing practices and the supply reliability of Metav Werkzeuge, the product supports streamlined procurement and integration into mixed-tool environments without unnecessary complexity.

Contact Metav Werkzeuge for tailored technical advice on the Teknik Cutting Tools S40T DDUNL boring bar and to arrange prompt supply from our Emmerich distribution centre

Technical Data

• Article number: K494TM
• ISO designation: S40T DDUNL
• Brand: Teknik Cutting Tools

Facts

• Shank diameter: 40 mm
• Overall length: 300 mm
• Diameter: 50 mm
• Cutting direction: left
• Cutting angle: 93°
• Cutting height: 60 mm
• Weight: 2.848 kg
• Compatible inserts: DN-- 1506

Special features

• Indexable-insert boring bar
• Designed for internal turning
• Robust construction for reduced deflection
• DDUN design for DN-- insert family

FAQ

Can the boring bar be used for deep internal bores?
The S40T DDUNL boring bar is intended for extended reach operations; its 300 mm overall length provides access for deeper internal bores while the 40 mm shank helps control deflection.

Which insert type fits this holder?
This holder accepts DN-- 1506 indexable inserts; the DDUN geometry secures the insert for stable cutting and straightforward replacement.

Is the cutting orientation suitable for reverse-direction turning?
Yes, the left-hand cutting orientation is designed for reverse or left-handed turns and is compatible with machines and setups that require such a direction.

How does the cutting angle affect performance?
The 93° cutting angle supports predictable chip formation and a stable cutting edge engagement, which can improve surface finish and tool life in many internal turning applications.

What should be considered when mounting the tool?
Ensure a rigid clamping system for the 40 mm shank and verify insert seating for the DN-- series; correct clamping reduces vibration and enhances repeatability for production runs.

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