Rotary cutting knives are installed, among others, on tube or filament production lines. Our rotary knife can perform up to 200 cuts per minute, and cut from 1 to 4 profiles, depending on the diameter and hardness of the extrudate. The cutting length is provided with stepless regulation and synchronised with the production line. The knife is controlled by a PLC processor, and a stateof- the-art touch screen adapted to the production line. Our knives can operate on a wide range of product diameters, which makes them very versatile and practical. The blades are made of various raw materials, e.g. high-speed steel, and their number is selected according to the Customer’s needs and pefernces. The machine is user-friendly, and blade change is very easy and safe. It is possible to make the knife as a standalone device.