32mm Boring Bar MTUN For TNMG 1604 Inserts 93° Cutting Angle, 250mm Length - Teknik Makina

Benefit from the combination of left‑hand orientation, precise ISO designation and proven insert compatibility for dependable turning results; ideal where a secure fit and predictable performance matter. Order the tool directly via Metav Werkzeuge or consult our specialists for process alignment.

Boring bar — MTUN for TNMG indexable inserts, left‑hand, S25S MTUNL

The boring bar is a left‑hand turning tool engineered for TNMG 1604 indexable inserts, built to support medium‑duty external turning with clear compatibility and stable mounting

• Left‑hand cutting direction
• ISO S25S MTUNL designation
• For TNMG 1604 indexable inserts
• Ø32 mm body, 250 mm overall length

Stable left‑hand machining for consistent cuts

The left‑hand orientation combined with an ISO S25S MTUNL designation gives a straightforward reference for machine setup and holder selection. A cutting angle of 93° provides near‑orthogonal engagement, which reduces lateral deflection in many turning routines and supports dimensional consistency. For workshops that standardise on indexable tooling, the clear designation and geometry simplify spindle orientation and repeatable tool offsets, which contributes directly to reduced setup time and fewer scrapped parts.

Fast integration with indexable‑insert tooling systems

Designed specifically for TNMG 1604 indexable inserts, the bar ensures secure seating and reliable clamp interaction when paired with suitable holders. The 25 mm shank diameter and clamp holder designation 16 allow compatibility with common mounting solutions; the nominal Ø32 mm body size and 250 mm overall length provide reach and rigidity for external turning tasks. For users less familiar with insert terminology: TNMG denotes a triangular negative insert with a 16 mm inscribed circle, and the MTUN style indicates the cartridge geometry adapted for this bar type.

Workshop efficiency through robust dimensions and predictable behaviour

With a cutting height of 50 mm and a measured weight of 0.952 kg, the component balances stiffness and manageability at the toolpost. The combination of those dimensions supports stable clamping and reduces vibration in typical lathe operations, contributing to improved surface finish and longer insert life under suitable cutting parameters. The clear ISO marking aids inventories and reordering, while the compact overall length helps when working in space‑restricted setups or when minimising tool overhang is a priority.

For applications that demand dependable left‑hand turning and straightforward insert compatibility, contact Metav Werkzeuge for delivery and application guidance: info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• SKU: K520TM
• ISO designation: S25S MTUNL
• Manufacturer: Teknik Makina

Facts

• Shank diameter: 25 mm
• Cutting height: 50 mm
• Weight: 0.952 kg
• Cutting angle: 93°
• Overall length: 250 mm
• Body diameter: 32 mm

Special features

• For TNMG 1604 indexable inserts
• Left‑hand cutting direction
• Clamp holder designation: 16
• MTUN for TNMG indexable inserts

FAQ

Which inserts fit this tool?
The bar accepts TNMG 1604 indexable inserts; the MTUN geometry is tailored for secure seating with that insert type in the S25S MTUNL holder (SKU K520TM).

Is the tool left‑hand or right‑hand?
This model is left‑hand; the cutting direction is specified as left, suitable for left‑hand turning operations.

What are the key dimensions to check for mounting?
Check the 25 mm shank diameter, Ø32 mm body, and 250 mm overall length to ensure compatibility with the selected tool post and holder.

What is the cutting angle and why does it matter?
The 93° cutting angle provides near‑orthogonal engagement with the workpiece, which helps reduce lateral deflection and supports repeatable dimensional accuracy.

Who manufactures this bar and what is the SKU?
The bar is supplied by Teknik Makina (SKU K520TM) with ISO designation S25S MTUNL, designed for TNMG 1604 inserts.

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