32mm S25S DDUNL Drilling Bar For DN-- 1506 Left-Hand Cutting 250mm Overall Length - Teknik Makina

With a Ø25 mm shank, 250 mm overall length and compatibility with DN-- 1506 indexable inserts, this boring bar delivers stable, repeatable internal turning in left‑hand operations; combine reach and rigidity for fewer tool changes and consistent cycle times. Order the S25S DDUNL boring bar directly via Metav Werkzeuge or ask our consultants if needed.

S25S DDUNL Boring Bar — left‑hand, Ø25 mm, L 250 mm (Teknik Makina)

The S25S DDUNL is a left‑hand boring bar engineered for internal turning with DN-- 1506 indexable inserts, offering extended reach and consistent chip control for CNC lathes and turning centres

• Left‑hand geometry for internal turning
• Holds DN-- 1506 indexable inserts
• Ø25 mm shank with 250 mm overall length
• 50 mm cutting height for deeper bores

Precision and rigidity for internal machining

This boring solution emphasises stability through a compact, stiff design that reduces vibrations and improves surface finish. The combination of a Ø25 mm shank and 250 mm overall length gives a favourable length‑to‑diameter ratio, while the 50 mm cutting height supports secure insert seating and repeatable cutting engagement. Users benefit from a predictable machining process: reduced tool wear and more consistent bore tolerances when compared with less rigid set‑ups. The included ISO designation S25S DDUNL identifies the bar for straightforward integration into tooling lists.

Efficiency through compatible inserts and clear geometry

Compatibility with DN-- 1506 indexable inserts simplifies tool inventory and reduces set‑up time, since standard inserts can be fitted and replaced quickly. The left‑hand cutting direction and a 93° cutting angle are optimised for specific turning strategies where reverse‑hand orientation is required, enabling reliable chip flow and safer plunging in internal operations. Lightweight at 0.95 kg, the bar balances manoeuvrability with sufficient mass to dampen chatter, helping to keep cycle times short and productivity high.

Practical guidance for workshop integration

Designed for use with common clamping systems, the boring bar matches holders specified as size 15, allowing rapid mounting and secure fixation. For best results, ensure the insert seat is clean and the clamping screw torqued to the toolholder manufacturer’s recommendation to maintain the 50 mm cutting height and correct cutting geometry. Suitable for routine internal facing and bore finishing, this tool fits well into mixed‑workshop environments where compatibility, repeatability and easy replacement of inserts are priorities.

For precise left‑hand internal turning with proven insert compatibility, contact Metav Werkzeuge to discuss the S25S DDUNL boring bar and suitable clamping holders — eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: K490TM
• Manufacturer: Teknik Makina
• ISO designation: S25S DDUNL
• Insert type: DN-- 1506
• Cutting direction: left

Facts

• Shaft diameter: 25 mm
• Cutting height: 50 mm
• Overall length: 250 mm
• Weight: 0.95 kg
• Cutting angle: 93°

Special features

• Compatible with DN-- 1506 indexable inserts
• Clamping holder reference: 15
• Left‑hand boring geometry
• ISO designation for tool lists: S25S DDUNL

FAQ

Which inserts are compatible with this boring bar?
The S25S DDUNL boring bar is designed for DN-- 1506 indexable inserts, allowing use of standard inserts for internal turning.

Is the boring bar suitable for deep internal bores?
With a 250 mm overall length and Ø25 mm shank, the bar is suitable for moderate‑depth internal operations where rigidity and controlled reach are required.

What is the cutting direction and how does it affect use?
This tool has a left‑hand cutting direction; ensure the lathe or CNC programme and tool assignments match this orientation for safe and effective machining.

Which holder size is recommended for secure clamping?
Use a clamping holder referenced as 15 to achieve proper fixation and maintain the specified 50 mm cutting height.

Can the S25S DDUNL be used on CNC turning centres and manual lathes?
Yes, the bar is suitable for both CNC turning centres and manual lathes provided the machine accepts the required left‑hand tooling orientation and appropriate holders.

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