30mm S20R DDUNR Boring Bar 93° For DN-- 1104 Inserts, 50mm Cutting Height - Teknik Makina

Benefit from a compact design that combines a 20 mm shank for secure clamping and a 200 mm overall length for extended reach; compatibility with DN-- 1104 indexable inserts and a 93° cutting angle supports accurate internal turning. Order via Metav Werkzeuge or consult our technical advisors for application guidance.

S20R DDUNR Boring Bar – 20 mm Shank, 93° Cutting Angle (Teknik Makina)

The S20R DDUNR is a precision boring bar designed for internal turning with DN-- 1104 indexable inserts, optimised for right-hand cutting applications

• 20 mm shank for stable clamping
• Compatible with DN-- 1104 indexable inserts
• 93° cutting angle for internal precision
• 200 mm overall length for extended reach

Stable clamping and reliable machining results

The combination of a 20 mm shank and a balanced tool body gives high stability during internal turning operations. Reduced vibration from a correctly sized shank improves repeatability and contributes to consistent bore quality. With a mass of 0.508 kg, the tool maintains good balance in the turret, which supports smoother feeds and predictable tool life. The ISO-style designation simplifies replacement and stock management for production environments.

Accurate bore finishing with standard inserts

A 93° cutting angle and compatibility with DN-- 1104 indexable inserts make this tool suitable for tight internal geometries and finishing passes. The 50 mm cutting height ensures secure insert engagement and predictable chip control. Indexable inserts are replaceable carbide tips clamped to the cutter body, allowing quick restoration of cutting performance without regrinding; this reduces machine downtime and keeps process capability high for series production.

Seamless integration into workshop tooling systems

The 200 mm overall length provides the reach required for deeper bores while maintaining rigidity when combined with the correct holder. The nominal 30 mm body diameter and the ISO-style specification support straightforward matching with standard tool holders. Labelled with an S20R ISO designation, the bar integrates into existing tool inventories without special adapters, helping to streamline tool changes and procurement. For specification clarifications or application recommendations, Metav’s advisors are available to advise on the correct holder and insert grade for the task.

For application recommendations and rapid supply of Teknik Makina turning tools, contact Metav Werkzeuge via +49 2822 7131930 or email info@metav-werkzeuge.com — our specialists will advise on the best configuration for workshop requirements.

Technical Data

• Article number: K408TM
• ISO designation: S20R DDUNR
• Manufacturer: Teknik Makina

Facts

• Shaft diameter: 20 mm
• Overall length: 200 mm
• Cutting height: 50 mm
• Body diameter: 30 mm
• Weight: 0.508 kg
• Cutting angle: 93°
• Cutting direction: right-hand

Special features

• Compatible with DN-- 1104 indexable inserts
• Designed for internal turning / boring
• ISO-format boring bar designation
• Right-hand cutting orientation

FAQ

Which insert type fits this boring bar?
The bar accepts DN-- 1104 indexable inserts; the S20R DDUNR geometry is designed specifically for that insert format.

Is the cutting direction right-hand or left-hand?
This boring bar is configured for right-hand cutting.

What are the main dimensions of the tool?
The tool features a 20 mm shank, 200 mm overall length and 50 mm cutting height, with a body diameter of 30 mm.

Can this bar be used for finishing internal bores?
Yes — the 93° cutting angle and secure insert clamping make it suitable for finishing and precise internal turning operations.

How is the tool designated for ordering and stock?
Order by SKU K408TM or ISO designation S20R DDUNR to ensure the correct boring bar is supplied.

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