32mm Boring Bar S25S MTUNR For TNMG 1604, 25mm Shank 50mm Cutting Height, Right-Hand - Teknik Makina

Benefit from a rigid setup and consistent chip control through the combination of MTUN geometry and a 25 mm shank; the robust 32 mm head diameter and 250 mm overall length improve stability for longer runs — order via Metav Werkzeuge or consult the specialists for tailored advice.

MTUN boring bar for TNMG indexable inserts — S25S MTUNR by Teknik Makina, right-hand cutting, 25 mm shank

The MTUN boring bar is designed for external turning with TNMG 1604 indexable inserts and provides a compact, rigid solution for stable machining in production and maintenance environments.

MTUN geometry for TNMG 1604 inserts Right-hand cutting direction for standard lathes 25 mm shank diameter for high rigidity 32 mm head diameter for vibration damping

Stable cutting performance for predictable cycle times

The MTUN geometry paired with compatibility for TNMG 1604 inserts delivers targeted chip formation and consistent cutting forces. With a 25 mm shank the toolholder minimises deflection under load, which results in improved part accuracy and fewer rejects. The right-hand cutting orientation suits conventional turning setups and reduces the need for special fixturing. These technical attributes translate into measurable production benefits: less scrap, reduced rework and more predictable machining cycles.

Reduced vibration, better surface quality

A 32 mm diameter at the head and a 250 mm overall length create a favourable stiffness-to-length ratio, helping to suppress chatter in medium-depth turning operations. The cutting angle 93° and cutting height 50 mm are engineered to support reliable insert seating and contact, which promotes surface finish consistency. Overall mass of 0.952 kg contributes to damping without compromising handling, aiding stable feeds and prolonging insert life through reduced impact loads.

Easy integration with existing tooling systems

Marked as S25S MTUNR to the ISO-style designation, the boring bar fits standard clamp systems and accepts the common TNMG 1604 family of inserts. A clamp size reference of 16 simplifies matching with holders and adapters already in a workshop. The combination of ISO identification and a familiar insert format makes retrofitting into current toolsets straightforward, lowering setup time and keeping changeover effort to a minimum.

Designed for reliable daily use and predictable maintenance

Constructed for routine production environments, this toolholder emphasises stability and repeatability. The clear mechanical specification allows process engineers to calculate cutting parameters with confidence and to standardise operations across shifts. When combined with a methodical tool-change schedule, the result is fewer interruptions and a steady output level that supports throughput targets.

For technical advice or to arrange supply from our Emmerich quality hub, contact Metav Werkzeuge for personal consultation and fast processing — eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• SKU: K442TM
• Manufacturer: Teknik Makina
• Designation: MTUN for TNMG Indexable Inserts
• ISO designation: S25S MTUNR

Facts

• Shank diameter: 25 mm
• Overall length: 250 mm
• Head diameter: 32 mm
• Cutting height: 50 mm
• Cutting angle: 93°
• Weight: 0.952 kg
• Clamp size reference: 16
• Cutting direction: right

Special features

• For TNMG 1604 indexable inserts
• ISO-compatible designation S25S MTUNR
• Right-hand cutting orientation
• Robust shank for reduced deflection

FAQ

What insert type is recommended for this boring bar?
The recommended insert family for the MTUN boring bar K442TM is TNMG 1604, which pairs well with the bar's geometry for stable chip control.

What is the shank diameter and why does it matter?
A 25 mm shank diameter gives the S25S MTUNR boring bar increased rigidity, reducing deflection and improving dimensional accuracy during cutting.

Which cutting direction is supported?
This tool supports right-hand cutting; the right-hand orientation is specified in the technical data for consistent lathe set-ups.

Can the bar be used with standard clamp holders?
Yes, the ISO designation and clamp size reference (16) mean the boring bar is compatible with common clamp holders and adapters in typical tooling systems.

What are the advantages of the 32 mm head diameter?
The larger 32 mm head diameter improves vibration damping and contributes to better surface finish and longer insert life under comparable cutting conditions.

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