Revolutionary New SLIK-SOLID End Mill Line

30 August 2025

TaeguTec has launched its SLIK-SOLID end mill line, a significant advancement in machining technology. This innovative product features UHP 4 type solid end mills with the TT5520 grade coating, offering improved performance and extended tool life based on TaeguTec's expertise.
The SLIK-SOLID line addresses critical machining challenges through sophisticated engineering innovations. The UHP 4 end mills incorporate improved chip gullets and flute geometries that enable smoother chip evacuation, which is essential for maintaining optimal cutting conditions. These tools feature smooth and excellent machinability by applying unequal flute spacing and combining this with optimised variable helix angles, reducing vibrations under demanding machining conditions with high cutting loads.

The enhanced design delivers superior shoulder machining performance, achieving better surface finishes under higher cutting conditions while maintaining stable machining without tool breakage, even during full slotting operations of 1.5XD or higher. This exceptional stability represents a significant improvement over conventional end mill designs and enables manufacturers to push cutting parameters while maintaining impressive performance levels.

Central to the SLIK-SOLID line's performance advantage is the new TT5520 PVD coating technology. This advanced coating system features excellent abrasion resistance through the application of a sub-micron substrate combined with an anti-abrasion and oxidation-resistant PVD AlCrN-coated layer. The single-direction crystal-aligned AlCrN layer provides enhanced protection against wear and thermal degradation, significantly increasing tool life when machining heat-resistant super alloys and various steel grades, including alloy, carbon, mould, and stainless steel applications.

The SLIK-SOLID line features two primary configurations to meet diverse machining needs. The standard UHP 4 square end mills deliver optimal performance for general milling applications. The 4-flute medium flat geometry, combined with a variable helix angle design, empowers the UHP 4 to excel in applications that require high material removal rates while maintaining precise dimensional control.
For applications requiring enhanced surface quality and complex geometries, the UHP 4R corner radius variants are the preferred choice. The corner radius design reduces stress, prevents edge chipping, and facilitates smoother cutting during finishing operations. Available in various radius options ranging from 0.3 to 3.0mm, these tools provide flexibility for different part geometries while maintaining the same advanced coating and geometric features as the flat end mills.

The square end UHP 4 series is available in diameters from 2 to 25mm with an overall length from 42 to 140mm, depending on the diameter selected. With shank diameters from 6 to 25mm and flute lengths from 6 to 75mm, the UHP 4 has been optimally designed for maximum rigidity and stability for various machining applications. In contrast, the UHP 4R end mills with corner radii are available in diameters from 3 to 20mm with an overall length from 57 to 110mm and flute lengths from 10 to 45mm. The corner radius offering is extensive with radii ranging from 0.3 to 3mm and many popular diameters providing many radius options.

In testing across materials such as Cr-Mo low alloy steel, stainless steel SS304, and mould steel NAK80, the UHP 4 series has demonstrated tool life improvements ranging from 20% to 67% compared to competitive solutions. These improvements translate directly into reduced tooling costs, increased productivity, and enhanced part quality for manufacturing operations. TaeguTec recommends replacing the existing TSE 4 and HES 4 products with the new UHP 4 series to benefit from the enhanced performance characteristics.