21mm End Mill For LNMU 0303 Indexable Inserts 150mm Overall With Internal Coolant - Teknik Makina

Take advantage of the combination of precise insert compatibility, internal coolant and a compact 20 mm shank for reliable milling performance; order directly via Metav Werkzeuge or consult our specialists for application advice.

Shank milling cutter S674-1TM – 21 mm for LNMU 0303 indexable inserts, internal coolant (Teknik Makina)

A Shank milling cutter S674-1TM crafted for use with LNMU 0303 indexable inserts, offering internal coolant and a compact profile for versatile milling and straightforward insert changes

• 21 mm cutting diameter
• Internal coolant for reliable chip evacuation
• Compatible with LNMU 0303 indexable inserts
• 20 mm shank, 3 cutting edges

Productivity through proven insert compatibility

The milling system is tuned for productive results by using the widely adopted LNMU 0303 insert family; this ensures consistent cutting geometry and repeatable results across serial production. With a 21 mm diameter and three cutting edges, the design balances material removal rate and surface finish, reducing cycle times while maintaining dimensional stability. The modular insert concept simplifies inventory and reconditioning: worn edges are replaced rather than the whole tool, which lowers lifecycle cost and keeps machine uptime high.

Stable machining with internal coolant and controlled chip flow

Integrated internal coolant directs lubricant and coolant precisely to the cutting zone, improving flank wear behaviour and aiding chip evacuation in through-tool flow operations. This targeted cooling reduces thermal deformation and extends insert life, especially during medium- to high-feed roughing passes. The result is fewer tool changes and more predictable component tolerances, an important advantage for job shops and production lines aiming for consistent first-pass yield.

Compact design for easy handling and reliable set-up

A 20 mm shank and a 150 mm overall length deliver a compact footprint that suits smaller spindles and tight set-ups while retaining sufficient reach for many applications. The tool features a T8 Torx interface and M2.5x7 screws for secure insert fastening, enabling quick, repeatable insert changes with standard workshop keys. Supplied weight and dimensions support straightforward balancing and fixture planning, helping to integrate the cutter into existing toolholders without extensive adaptation.

Contact Metav Werkzeuge for tailored technical advice on integrating the S674-1TM into existing workflows and to confirm insert compatibility for specific materials and machining conditions.

Technical Data

• Article number: S674-1TM
• Manufacturer: Teknik Makina
• Product type: Shank milling cutter

Facts

• Cutting diameter: 21 mm
• Shank diameter: 20 mm
• Overall length: 150 mm
• Cutting length: 50 mm
• Number of cutting edges: 3
• Weight: 0.389 kg
• Internal coolant: yes
• Torx key: T8
• Torx screw: M2.5x7

Special features

• For LNMU 0303 indexable inserts
• Compatible with Tungaloy insert system
• Internal coolant feed
• Compact 20 mm shank design

FAQ

What insert type is required for this cutter? The shank milling cutter S674-1TM uses LNMU 0303 indexable inserts and is compatible with Tungaloy insert systems for straightforward sourcing and replacement.

Is through-tool coolant integrated in the design? Yes, the S674-1TM from Teknik Makina features internal coolant, providing targeted cooling to the cutting zone to improve tool life and chip control.

Which shank and cutting diameters are available for this model? This model has a 21 mm cutting diameter and a 20 mm shank, with a 150 mm overall length and 50 mm cutting length suitable for compact setups.

How many cutting edges does the cutter have and what is the fastening method? The cutter has three cutting edges and uses M2.5x7 Torx screws tightened with a T8 Torx key for secure insert clamping.

Is the S674-1TM suitable for production environments with frequent tool changes? Yes, the insert-based concept of the S674-1TM keeps replacement and maintenance quick, minimising downtime and supporting high machine utilisation.

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