Single Shaft Shredders: the Blue Marlin
Single shaft shredders are used to reduce bulky materials and prepare them for the separation and classification stages that follow. Featuring easily removable grids, these machines produce uniform output sizes, ensuring high density and effective impurity removal. The Blue Marlin single-shaft shredder by Zato prioritises safety during routine or scheduled maintenance, minimises downtime and delivers high reliability. Where a precise, screened particle size matters — for example ahead of LIBS or eddy-current sorting — a single shaft shredder keeps the material open and consistent, making it the natural choice for clean, repeatable results.
General features
- Exceptional robustness
- Maximum accessibility to all wear parts, including blades and grids
- High-quality components sourced from leading international brands
- Load-Sensing software for optimised processing of various materials
How the Blue Marlin single shaft shredder works
Among Zato’s single shaft shredding machines, the Blue Marlin is engineered so that every wear part is reachable, which is what keeps maintenance fast and downtime low. As experienced single shaft shredder manufacturers, Zato combines a removable grid with Load-Sensing control to hold a uniform output size across very different materials.
- Dual gearboxes transmit power and prevent shaft twisting when encountering oversized or unshreddable objects
- Sturdy gearbox support with a double reaction arm
- Open hydraulic circuit for improved long-term safety and ease of maintenance
- Hydraulic system with constant-power pumps for energy savings during standby
Blue Marlin – technical data
 Blue Marlin | |
| Weight | 45 t |
| Installed power at the rotor | 355 kW |
| Loading mouth capacity | 11,5 m³ |
| Pusher type | tilting |
| Motorization | electric |
| Rotor weight | 11 t |
| Rotor length | 2900 mm |
| Rotor diameter | 840 mm |
| Rotor speed | 20 rpm |
| Blade size | 120x120x60 mm |
Dimensions
Video single-shaft shredders
Blue Marlin
Not just aluminium! Blue Marlin is the multi-material shredder for any lightweight scrap need
Applications
FAQ
When should I choose a single-shaft shredder instead of a twin-shaft one?
Choose a single-shaft shredder when a uniform, screened output size is the priority — for example to prepare material for LIBS, eddy-current or sensor-based sorting. Zato’s Blue Marlin pushes material against a removable grid to control the particle size precisely, whereas a twin-shaft shredder is preferred for opening bales and densifying bulky loads.
What output size can a single-shaft shredder produce?
The output size is set by the grid (screen) fitted to the machine and can be changed by swapping grids. On the Blue Marlin, the grids are easily removable, so the same shredder can deliver different uniform sizes depending on the downstream process; Zato helps select the right grid for your target fraction.
How easy is maintenance on a single-shaft shredder?
Maintenance is a core design goal. The Blue Marlin offers maximum accessibility to all wear parts, including blades and grids, and its open hydraulic circuit improves long-term safety and serviceability. This reduces downtime during routine or scheduled maintenance and helps keep the line running.
Can a single-shaft shredder process aluminium and cables?
Yes. The Blue Marlin is a multi-material machine suited to lightweight scrap such as aluminium profiles, UBC and electrical cables, using Load-Sensing software to adapt to different materials. Zato can arrange a test with your own material to confirm the output quality before purchase.
Does a single-shaft shredder generate a lot of fines?
A well-configured single-shaft shredder keeps fines low because it controls size with a grid rather than by high-speed impact, which preserves material for downstream sorting. With the Blue Marlin, Zato tunes rotor speed and grid selection to minimise fines while holding a consistent output.
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