breaks down large units into small parts, e.g. down to 250-100 mm. Relevant products can be metal, wood, plastic, e-scrap, MSW etc.

is often used to break down into very small units, e.g. down to approx. 5 mm. Roto-grinding is suitable for wood, plastic, waste without metal, paper etc.

as roto-grinders, but can process hard materials such as wood with nails in it, e-scrap, hard white goods, tires with wires, MSW with metal pieces etc.