Granulator Knives - Blade Material: Steel

Granulator knives are industrial cutting tools used to reduce materials like plastics, rubber, and cables into smaller, uniform pieces for recycling and reprocessing. Their specifications are primarily defined by their material composition, dimensions, and the required precision for the application.
Key Specifications
Specification Feature DetailsSources
MaterialD2 tool steel (1.2379), H13, 440C Stainless Steel, HSS (High Speed Steel), Tungsten Carbide (TC) Inlay, Powder Metal (ASP Inlay), 9CrSi, SKD-11
Hardness (HRC)Typically between 50 and 62 HRC, depending on the material and intended use. Higher hardness increases wear resistance
DimensionsHighly variable and customized to OEM machine specifications. Typical ranges for width and height are 30-100 mm (W) and 20-50 mm (H). Lengths can vary from a few inches up to several feet
ToleranceManufactured to exacting standards to ensure precision cutting, typically with a tolerance of 0.02 mm (or 10 microns for critical bearing surfaces)
GeometryStraight blades for general purpose and high throughput; Hooked/Curved for tougher, fibrous materials like film or fiber; Toothed for fine grinding and consistent chip size
FinishMirror-polished finishes (Ra 0.4 um) are common to reduce friction, minimize material adhesion, and improve cut quality and ease of cleaning