Selecting the correct machine depends primarily on your target end-product size and hourly capacity. For rough shredding (50-150mm pieces), a Double-Shaft Shredder is the industry standard due to its high torque and stability. If you require fine rubber powder (1-5mm), you must invest in a multi-stage recycling line that includes a primary shredder, a rasper for wire separation, and a granulator. Always verify the blade material, preferably D2 (SKD-11) or DC53 high-alloy steel, to ensure longevity against the high-tensile steel wires found in radial tyres.