Granulator knives

Granulator knives from KN Knives are replacement rotor and stator (bed) knives for plastic granulators, cutting mills and knife mills that turn sprues, pipes, film and other plastic waste into uniform regrind. We have been manufacturing industrial machine knives in Slovenia since 1996 – every knife is CNC-machined, heat-treated and precision-ground in our own production, under ISO 9001:2015.

Granulator blades for Herbold, Zerma, Tria, Dipre and more

Knives for Herbold, Zerma, Tria, Dipre, Condux, Weiss, Wanner, Rapid, Pallmann, Zeno and Erema machines. Filter by brand, purpose, industry, hardness or steel – every knife shows its dimensions, a technical drawing and, where available, a 3D model.

Steel and hardness

• 1.2379 / K110 – high wear resistance, the standard for most plastics.
• 1.2345 – tougher steel for impact-loaded work such as thick parts and lumps.
• 1.3343 (HSS) – very sharp, long-lasting edge for film and fibres.

Hardened to 54–63 HRc, depending on the steel and the application.

Machine brand names are trademarks of their owners and are used only to identify the machines our knives fit.