Changzhou SDK Precision Technology Co.,Ltd

Changzhou, China — Changzhou SDK Precision Technology Co.,Ltd, a leading manufacturer in the carbide cutting tools industry, has officially released its new Carbide 4 Flutes HM Square End Mill HRC68, engineered for high-precision machining of hardened steel.

Designed with a 45° helix angle and enhanced with Balzers DR Coating, this end mill delivers exceptional heat resistance, stability, and wear life. The tool is manufactured using Germany K44 ultra-fine carbide (grain size 0.4 μm, Co 12%, WC 88%) to ensure superior hardness and toughness during high-performance milling tasks.

With precision ≤0.005 mm and a variable top cutting edge design, the new HRC68 end mill provides smoother cutting, reduced vibration, and excellent surface finishing. It is optimized for finishing processing on hardened steel up to HRC60, making it ideal for mould manufacturing, die processing, automotive components, and high-accuracy metalworking applications.

Field testing shows that the tool’s lifetime is 2–3 times longer than common HRC65 end mills, offering manufacturers a significant reduction in tool cost and machine downtime.

This new launch reinforces Changzhou SDK Precision Technology Co.,Ltd’s commitment to advancing carbide milling technology and supplying global customers with reliable, high-performance solutions for modern CNC machining.