Single shaft shredders adopt a simple yet efficient shredding principle that relies on the coordination of a rotating main shaft, fixed blades and a pushing mechanism. Unlike dual shaft models that use two interlocking shafts, single shaft shredders leverage one central rotating shaft equipped with multiple moving blades arranged in a spiral pattern. This design enables targeted and powerful shredding of various materials by combining rotational force with controlled feeding.

The core of the principle lies in the interaction between moving blades on the rotating shaft and fixed blades installed on the machine's inner wall. As the main shaft rotates at a steady speed, the moving blades grab materials fed into the chamber and pull them toward the fixed blades. The shearing force generated between the moving and fixed blades tears and cuts the materials into smaller pieces. The spiral arrangement of moving blades ensures continuous contact with materials, avoiding gaps in the shredding process and improving efficiency.

A hydraulic pushing plate plays a key role in realizing this principle. It slowly pushes materials toward the rotating shaft, ensuring consistent contact with the blades and preventing materials from being thrown back by centrifugal force. This pushing mechanism also adjusts pressure according to material hardness, providing stable feeding without overloading the machine. For flexible or bulky materials, the pushing plate helps press them against the blades, avoiding wrapping around the shaft and ensuring smooth operation.

The shredding principle also incorporates adjustable blade gaps to control the size of shredded output. By fine-tuning the distance between moving and fixed blades, the machine can produce different granularities to meet diverse application needs. This adaptability, combined with the shearing and tearing forces generated by the single rotating shaft, makes the machine suitable for processing a wide range of materials, from soft plastics to hard wood and electronic waste, while maintaining stable and reliable performance.