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Zerma GST 250/450

Optimisation of an Established Concept.

Size Reduction of Large Blow-Moulded Parts as well as Start and End Pieces

In a compact redesign, the best features of the proven GST and GSC series have been integrated, with particular emphasis on weight, handling, and energy efficiency. These compact granulators are fully soundproofed, ensuring extremely quiet operation. The granulators are available with a 250 mm rotor diameter and widths of 300, 450, and up to 600 mm. The curved rear wall of the cutting chamber ensures aggressive material infeed and prevents material blockages. As with all ZERMA granulators, the rotor and stator knives can be adjusted outside the machine, minimizing downtime during maintenance.

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The strongly tangential, curved rear wall of the cutting chamber, in combination with the aggressive open rotor design, ensures reliable material intake and minimizes the risk of blockages. These compact granulators are ideal for use in blow moulding operations. They are suitable for recycling large parts such as bottles, canisters, and crates. Thanks to their low feed height, the machines can be easily fed by hand or with a small conveyor belt. The low noise emission and compact footprint make these granulators the perfect solution for inline size reduction.

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Optional Rear Wall with Raised Stator Knife — M Version:
The infeed method with a raised stator knife is better suited for processing thicker-walled and more compact parts, such as injection moulded components, profiles, and sheets. Thanks to the cutting geometry and reduced aggressiveness of the rotor, high-quality regrind can be achieved regardless of the material type or form, such as injection moulded parts, profiles, or sheets.

Control System and Switch Cabinet:
The integrated control and operator console not only conforms to all relevant safety regulations, but can also be customised to specific requirements. In addition, peripheral devices such as feed conveyors, metal detection, and discharge systems can be seamlessly integrated into the machine’s control system. For increased efficiency, an optional intelligent energy-saving function is available, which reduces power consumption during idle periods and can automatically start and stop the system based on the status of upstream machines.

Standard configuration with blower, 0.37 kW power consumption and 400 mm cyclone

Rotor diameter (mm): 250
Rotor width (mm): 450
Drive (kW): 7.5
Number of rotor knives: 3 x 2
Number of stator knives: 2
Screen perforation (mm): > 6
Weight approx. (kg): 700
Feed opening (mm): 380 x 450
Feed opening option M version (mm): 295 x 450

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