30mm S20R DDUNL Drilling Bar For DN-- 1104 Indexable Insert, Left-Hand Cut, 50mm Cutting Height, 200mm Overall Length - Teknik Makina

Take advantage of a combination of rigidity and precise insert compatibility for steady internal turning; the left‑hand orientation and compact weight ensure stable cuts and easy handling — order the boring bar directly via Metav Werkzeuge or consult our advisors for application support.

S20R DDUNL Boring Bar — left‑hand, for DN-- 1104 indexable insert (Teknik Makina)

S20R DDUNL is a left‑hand internal turning tool for precision boring applications, designed to accept DN-- 1104 indexable inserts and engineered for repeatable, vibration‑resistant performance.

• Left‑hand cutting orientation
• Compatible with DN-- 1104 inserts
• Shaft Ø 20 mm for secure clamping
• Overall length 200 mm for deep reach

Stable cutting performance for consistent bore quality

The bar delivers rigidity through its compact geometry, reducing vibration and promoting a consistent surface finish in internal turning. With a Shaft Ø 20 mm and an external diameter of Ø30 mm, the toolholder offers a robust interface between machine and insert seat. The specified 93° cutting angle stabilises chip flow and helps maintain concentricity, which is especially relevant for repetitive production runs where dimensional consistency is a priority.

Efficient insert use and simple rework procedures

Designed to accept DN-- 1104 indexable inserts, the tool minimises downtime during insert changes and supports economical cutting strategies. The 50 mm cutting height ensures an adequate contact area for the insert, while the modest mass of 0.508 kg keeps the assembly well balanced on the turret. For workshops running mixed batches, compatibility with a common insert family reduces tooling inventory and simplifies set‑up procedures.

Practical integration into workshop workflows

The left‑hand orientation and the ISO designation are suited to specific lathe and turret configurations; this makes the bar appropriate for both single‑piece turning and serial production that calls for precise internal features. The 200 mm overall length provides reach into deeper bores without excessive overhang, helping to lower the risk of deflection. Technical advisors at Metav Werkzeuge can advise on clamping options and machining parameters to match machine rigidity and cutting data.

Contact Metav Werkzeuge for tailored machining recommendations and to order the S20R DDUNL — call +49 2822 7131930 or email info@metav-werkzeuge.com for quick, professional advice and delivery from Emmerich.

Technical data

• Article number: K487TM
• Manufacturer: Teknik Makina
• ISO designation: S20R DDUNL

Core dimensions

• Diameter: 30 mm
• Shaft diameter: 20 mm
• Cutting height: 50 mm
• Overall length: 200 mm
• Weight: 0.508 kg
• Cutting angle: 93°
• Cutting direction: left

Design and compatibility

• Compatible inserts: DN-- 1104 indexable inserts
• Insert seat geometry: DDUN
• Clamping holder designation: 11
• Application: internal turning / boring

FAQ

Which inserts fit this boring bar?
The bar accepts DN-- 1104 indexable inserts; the S20R DDUNL seat is matched to the DDUN insert geometry for secure mounting.

What are the key dimensions to consider for setup?
Key dimensions are Ø30 mm external diameter, Shaft Ø 20 mm, 50 mm cutting height and 200 mm overall length to assess reach and clamping requirements.

Is this tool for left‑hand turning only?
Yes, the tool is specified for left‑hand cutting and is intended for operations where the cutting direction corresponds to a left‑hand orientation.

How heavy is the boring bar and how does that affect balance?
The tool weighs 0.508 kg; its modest mass contributes to balanced turret mounting and reduced dynamic loads at typical spindle speeds.

Who manufactures this product and what is the SKU?
The manufacturer is Teknik Makina and the article is listed under SKU K487TM.

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