50mm S40T MTUNR Boring Bar For TNMG 1604 Inserts, 93° Cutting Angle, 300mm Overall Length - Teknik Makina

Take advantage of a rigid, ISO-designated boring bar that combines a 40 mm shank and 60 mm cutting height for stable internal turning and consistent surface finishes; compatible with TNMG 1604 indexable inserts for rapid tool changes. Order or request machining advice via Metav Werkzeuge to integrate this solution into existing CNC processes.

Boring bar MTUN for TNMG Indexable Inserts — S40T MTUNR, 40 mm shank (Teknik Makina)

The Boring bar MTUN for TNMG Indexable Inserts is a right-hand internal turning tool designed for CNC boring operations, offering robust clamping and compatibility with TNMG 1604 indexable inserts for repeatable results in precision workshops

• S40T MTUNR construction for stability
• 40 mm shank for secure clamping
• Compatible with TNMG 1604 indexable inserts
• 300 mm overall length, right-hand cutting

Consistent bore quality through rigid design

The solid construction and S40T MTUNR designation indicate a tool engineered for stability under cutting loads. A 40 mm shank provides increased clamping surface and reduces vibration, which translates into improved dimensional accuracy and longer insert life. For shops aiming to reduce rework and tool changes, this rigidity supports predictable cycle times and repeatable bore diameters.

Reliable insert interface for efficient tool changes

Compatibility with TNMG 1604 indexable inserts ensures a standardised cutting geometry and straightforward replacement. The 60 mm cutting height allows secure seating of the insert and supports consistent chip evacuation during finishing passes. Using standard TNMG inserts simplifies stocking and makes it easier to maintain surface finish requirements without complex tool adaptations.

Shop-floor ergonomics and setup efficiency

With an overall length of 300 mm and a 50 mm diameter, the tool balances reach and stiffness for medium-depth bores. The right-hand cutting orientation suits common lathe and mill-turn setups. A compact clamping size of 16 facilitates rapid fixture changes while the item weight of 2.852 kg provides a tangible feel of solid construction without excessive mass. These dimensions help reduce setup time and support lean machining sequences.

Suitable applications and recommended use

This tool is intended for internal turning and boring operations where standard TNMG inserts are preferred for economy and availability. The design is appropriate for finishing and semi-finishing passes where vibration control and repeatability matter. For specific material recommendations or insert grades, technical advisors at Metav Werkzeuge can propose combinations matched to cycle time and surface specification targets.

Request tailored machining advice from Metav Werkzeuge in Emmerich — specify the Teknik Makina MTUN boring bar (K446TM) and receive practical recommendations by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: K446TM
• Manufacturer: Teknik Makina
• Item name: MTUN for TNMG Indexable Inserts
• ISO designation: S40T MTUNR

Key dimensions

• Shank diameter: 40 mm
• Overall length: 300 mm
• Diameter: 50 mm
• Cutting height: 60 mm
• Weight: 2.852 kg
• Cutting direction: right
• Cutting angle: 93°

Compatibility and features

• Compatible inserts: TNMG 1604
• Clamping holder size: 16
• Product type: boring bar
• Suitable for indexable insert turning operations

FAQ

What insert type does the boring bar accept?
The MTUN boring bar accepts TNMG 1604 indexable inserts, enabling quick index and replacement while maintaining consistent cutting geometry.

Is this boring bar right- or left-hand?
The tool is configured for right-hand cutting, suitable for standard lathe operations and many CNC turning centres.

What are the key dimensions for fixture planning?
Key dimensions are shank diameter 40 mm, overall length 300 mm, and cutting height 60 mm, which should be considered when specifying holders and clamping fixtures for the K446TM.

Can the bar be used for deep bores?
With a 50 mm diameter and a 300 mm overall length, the bar is best suited to medium-depth bores; deep boring may require evaluation of stiffness and vibration for the specific setup.

Which manufacturer produced this boring bar and what is the SKU?
This boring bar is from Teknik Makina and listed under SKU K446TM; the ISO designation is S40T MTUNR

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