Industrial single-shaft, double-shaft or four-shaft shredder? ...

The single-shaft (single-rotor), double-shaft or four-shaft industrial shredders guarantee different performances and are suitable for the treatment of different types of material.

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To choose which type of shredder to prefer, it is necessary to take into account many factors, such as:

• Type of material to be shredded: Some materials can be treated by both single-shaft shredders, double-shaft or four-shaft shredders, while others require a specific type of shredder. For example, rubber and WEEE can only be shredded with a double shaft, while plastic or industrial pallets require treatment with a single rotor.

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• Dimensions of the material to be shredded: Normally, double-shaft shredders are used for the treatment of large waste because they allow a drastic reduction in volume thanks to a dual blade system that turns in opposite directions. Four-shaft shredders further evolve this technology, equipped with a grid to calibrate size, making them suitable for handling large quantities of large waste. In contrast, single-rotors are ideal for grinding smaller material. However, due to customization options for the blade dimensions, they can also offer high performance and long-term operational efficiency with lower maintenance costs compared to double-shaft shredders.

• Possible presence of non-shreddable material: A critical factor to consider is the potential presence of non-shreddable components that could damage the shredder blades. If it's uncertain whether the material is free from such components, a slow single-shaft shredder is recommended. This reduces damage risk and allows for faster maintenance support compared to double-shaft or four-shaft shredders. Notably, the Camec single-shaft shredder features a shock sensor that halts operation when foreign components are detected.

• Post-treatment size of the material: If the primary goal is to reduce material volume, a double-shaft shredder is the optimal choice due to its ability to shred various materials efficiently. Conversely, if a uniform residue size is also important, a single-rotor equipped with a grid regulating the output is advisable. In cases where material requires control over size but isn't suitable for single-rotors, a four-shaft shredder with a grid can be a viable alternative.

To discover the characteristics of our single-shaft, double-shaft, and four-shaft industrial shredders and to find out what type of material they can handle, download the CAMEC Industrial Shredder Guide!

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