63mm MTUNL Boring Bar For TNMG 2204 Indexable Inserts, 93° Cutting Angle, 350mm Length - Teknik Makina

Take advantage of a robust, precision-engineered boring bar that pairs rigidity with proven insert compatibility to deliver consistent internal finishing. Benefit from the combination of stable clamping, clear dimensional data and straightforward workshop integration — order the tool directly via Metav Werkzeuge or consult our specialists for application advice.

S50U MTUNL Boring bar — MTUN for TNMG indexable inserts, 50 mm shaft, left-hand

The S50U MTUNL is a left-hand boring bar designed for internal turning with TNMG 2204 indexable inserts, optimised for medium- to heavy-duty CNC lathe operations

• Left-hand cutting for internal turning
• 50 mm shaft for improved rigidity
• Compatible with TNMG 2204 inserts
• 65 mm cutting height for deeper bores

High-rigidity design for consistent bore quality

The holder’s 50 mm shaft and substantial body diameter create a stable cutting platform that reduces vibration and runout during internal machining. A cutting angle of 93° and a cutting height of 65 mm provide a geometry that supports accurate chip control and repeatable bore form; this results in fewer reworks and shorter cycle times in batch production. The substantial mass (approx. 5.145 kg) contributes to damping, which is particularly beneficial when machining longer bores or using interrupted cuts. In practical terms, the design translates into improved surface finish and tolerance adherence for turning operations on CNC lathes.

Proven insert compatibility and economical tooling

Built for TNMG 2204 indexable inserts, the toolholder accepts widely available turning grades, simplifying inventory and replacement logistics. Secure clamping and an ISO designation (S50U MTUNL) ensure a correct seating for the insert, supporting reliable tool life and easier index changes. The combination of standard insert form and robust clamping reduces unplanned downtime: worn edges can be indexed or changed quickly, lowering per-part tooling cost and keeping production moving. Where specialist grades are required, the holder’s compatibility allows selection of grades optimised for steel, cast iron or stainless applications without changing the holder.

Workshop integration, handling and safety considerations

The boring bar’s overall length of 350 mm and outer diameter 63 mm make it suitable for common internal turning set-ups; the clamping seat marked as 22 provides a clear reference for mounting into compatible toolposts or revolver turrets. The left-hand cut orientation is intended for specific spindle and turret arrangements—ensuring the correct cutting direction prevents unexpected tool engagement. Regular inspection of the clamping screw and insert pocket is recommended to maintain repeatability; balanced mounting and correct toolholding torque are practical steps that preserve accuracy. For complex applications or interference checks, Metav Werkzeuge can advise on integration and suitable insert grades.

Contact Metav Werkzeuge for tailored application advice, mounting recommendations and delivery from our Emmerich warehouse — Metav’s specialists are available to verify suitability for the intended CNC process

Technical data

• Article number: K532TM
• Manufacturer: Teknik Makina

Core measurements

• Shaft diameter: 50 mm
• Cutting height: 65 mm
• Weight: 5.145 kg
• Cutting angle: 93°
• Outer diameter: 63 mm
• Overall length: 350 mm

Special features

• ISO designation: S50U MTUNL
• Application: MTUN for TNMG indexable inserts
• Compatible inserts: TNMG 2204
• Cutting direction: left
• Clamping seat reference: 22

FAQ

What insert type is recommended for this boring bar?
The boring bar is designed for TNMG 2204 indexable inserts; these provide standard geometry and are widely available for varied workpiece materials.

Is the tool suitable for deep internal turning on CNC lathes?
With a 350 mm overall length and a 50 mm shaft diameter, the bar offers increased rigidity for deeper bores; appropriate mounting and balancing are required for best results.

Which cutting direction does the holder use?
This holder is configured for left-hand cutting, intended for setups where the tool engages from the left relative to spindle rotation.

How does the S50U MTUNL affect cycle times and surface finish?
The rigid shaft and 93° cutting geometry support reduced vibration, which helps to improve surface finish and can shorten cycle times through more stable 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; Germany; +49 2822 7131930; eMail: info@metav-werkzeuge.com