ZY-S Single-Shaft Shredder | V/Spiral Rotor, Discharge Screen, 5 Models 22–110kW | UZINEX

The ZY-S series single-shaft shredder is the industrial shredding equipment with a rotor whose knives are mounted in a V or spiral pattern, fixed counter-knives and an interchangeable discharge screen that controls the maximum fragment size at the outlet — available in five sizes from the ZY-S600 (22 kW, 600×600 mm chamber, 2.200 kg) to the ZY-S1500 (110 kW, 1.500×1.500 mm chamber, 9.800 kg) — designed for processing rigid and flexible plastic, rubber, paper, cardboard, electrical cables and electronic waste (WEEE) at low rotation speed, high torque, optimised energy consumption and low noise levels.

The ZY-S single-shaft shredder distinguishes itself from dual-shaft shredders through the presence of a discharge screen: the material remains in the cutting chamber and is re-cut by the rotor until the fragments become smaller than the screen openings, ensuring a uniform maximum size for all fragments at the outlet — an essential characteristic for applications requiring controlled particle size, such as recycling plastic for subsequent pelletising or the safe and verifiable destruction of documents and products. Key Advantages of the ZY-S Single-Shaft Shredder

• Interchangeable discharge screen — controlled maximum fragment size — the ZY-S single-shaft shredder has a discharge screen that retains the material in the cutting chamber and releases it only when the fragments are smaller than the screen openings; by changing the screen for one with smaller or larger openings, the operator precisely controls the maximum size of the fragments produced; this feature is unique compared with dual-shaft shredders, which discharge the material regardless of the size of the fragments produced.

• Rotor with V-pattern or spiral knives — progressive cutting, high torque, reduced vibration — the ZY-S single-shaft shredder uses a rotor with knives positioned in a V or spiral pattern that contact the material progressively, not simultaneously; progressive cutting reduces the load peaks on the motor compared with a rotor with straight knives that strike the material simultaneously, allows operation at a lower speed with the same result, and generates less noise and vibration in the equipment structure.

• Cr12MoV, SKD11 and D2 knives — high hardness for hard plastic, cables and WEEE — the ZY-S single-shaft shredder is equipped with knives made of Cr12MoV, SKD11 or D2 alloy tool steels with a hardness of 58–62 HRC; these materials withstand the abrasive wear caused by glass-fibre-reinforced plastic, WEEE with small metal components, cables with copper cores and other materials with hard inclusions; the knives can be removed and re-sharpened modularly, extending the service life of the set compared with non-removable monobloc knives.

• Low rotation speed with high torque — optimised energy consumption and low noise level — the ZY-S single-shaft shredder operates at low rotation speed with high torque, a principle that consumes less energy per kg of material processed than high-speed shredders at the same capacity; the low rotation speed generates less noise — in accordance with environmental standards for industrial installations in areas with noise restrictions — and reduces wear on the bearings and transmission compared with operation at high speeds.

• Modular design for fast maintenance — knife replacement without complete dismantling — the ZY-S single-shaft shredder has a modular design that allows individual access to each knife for inspection, re-sharpening or replacement without dismantling the complete rotor; worn knives are identified visually and replaced selectively, reducing maintenance costs compared with replacing the complete set; routine intervention takes 1–2 hours compared with 4–8 hours on shredders with a monobloc rotor.

• 5 models for any volume — from 600mm to 1500mm cutting chamber — the ZY-S single-shaft shredder covers the entire range of industrial capacities: the ZY-S600 for workshops and small recycling centres, the ZY-S800 and ZY-S1000 for medium installations, the ZY-S1200 and ZY-S1500 for high-capacity industrial lines; the capacity difference between models is 2–5 times, allowing precise sizing against the real volume of waste processed.

• Overload protection and electrical protection — safe operation on heterogeneous materials — the ZY-S single-shaft shredder has an integrated mechanical overload protection and electrical protection system; when the knives are jammed by an unexpected hard object (a metal part in WEEE, an anchor in cables), the protection system stops the motor and triggers the alarm before the overload damages the transmission; the electrical protection prevents the motors from burning out during voltage variations or short circuits in the control system.

Technical Specifications — ZY-S Single-Shaft Shredder (All Models)

Operating Principle of the ZY-S Single-Shaft Shredder

The ZY-S single-shaft shredder operates on a distinct principle compared with dual-shaft shredders, which gives it the advantages of controlled fragment size and versatility on non-metallic materials:

• Gravity or forced feeding — the material is introduced into the feed chamber of the ZY-S single-shaft shredder by gravity (for materials that fall freely) or by a forced-feeding system with a hydraulic pusher (for bulky or light materials that do not fall onto the rotor on their own); the optional hydraulic pusher ensures continuous contact of the material with the rotor even for light materials such as expanded plastic or films.

• Progressive rotor-to-fixed-knife cutting — the V or spiral rotor of the ZY-S single-shaft shredder rotates and cuts the material through the shearing action between the moving knives of the rotor and the fixed knives mounted on the housing; the V or spiral geometry means that at each rotation only a few knives are in contact with the material simultaneously, reducing the load peak on the motor compared with a straight rotor where all the knives strike at the same time.

• Recirculation through the screen until the desired size — the cut fragments fall onto the discharge screen of the ZY-S single-shaft shredder; those smaller than the screen openings fall into the collection chute; those that are larger are lifted by the continuously moving rotor and re-cut; the process repeats automatically until all the fragments in the chamber are below the screen size — without manual intervention and without large pieces at the outlet.

• Gravity or pneumatic discharge — the fragments that pass through the screen of the ZY-S single-shaft shredder are discharged by gravity into the collection container or pneumatically through a suction system into bags or silos; pneumatic discharge is used when the small size of the fragments and the low density of the shredded plastic would create a slow build-up beneath the screen without active suction.

Compatible Materials — What the ZY-S Single-Shaft Shredder Can Shred

• Rigid and semi-rigid plastic — the ZY-S single-shaft shredder efficiently processes all common types of rigid plastic: PET, HDPE, PP, PS, ABS, rigid PVC, PC — including products with complex geometry (jerry cans, crates, technical plastic parts) that cannot be cut efficiently by slow dual-shaft shredders; the discharge screen ensures that the shredded plastic fragments are the right size for feeding the granulator or extruder in the subsequent recycling stage.

• Flexible plastic and films — the ZY-S single-shaft shredder with a hydraulic pusher processes films, bags, stretch film and flexible plastic materials that would otherwise wrap around the shafts of slow dual-shaft shredders; the pusher forces the flexible material onto the rotor and prevents build-up in the feed chamber.

• Electrical cables and cable bundles — the ZY-S single-shaft shredder cuts cable bundles into uniform fragments for the subsequent separation of copper and aluminium from the PVC sheathing; the fine-opening screen allows short fragments with a large separation surface to be obtained, optimising the recovery of the valuable metal in the density-separation or flotation stage; electrical cable recycling is one of the main applications of the single-shaft shredder in the waste sector.

• Electronic waste (WEEE) and household appliances — the ZY-S single-shaft shredder fragments dismantled WEEE components (circuit boards, housings, plastic and light-metal components) into controlled-size fragments for the separation of valuable fractions; the overload protection of the ZY-S single-shaft shredder handles the small metal parts inherent in WEEE without damaging the knives or the transmission.

• Paper and bulky cardboard — the ZY-S single-shaft shredder processes cardboard boxes, archive folders, documents, magazines and office paper in large volumes; the application of safe and verifiable destruction of confidential documents is possible by choosing a screen with small openings that produces illegible fragments, and the destruction protocol can be documented by recording the screen used.

• Soft rubber and pre-cut tyres — the ZY-S single-shaft shredder processes soft rubber, industrial gaskets and pre-cut tyre pieces (not whole tyres — these require the ZY-DT shredder); the rubber fragments produced by the ZY-S single-shaft shredder can be further processed by the ZY-SW separator to separate the residual wire.

• Pharmaceutical and food industry waste — the ZY-S single-shaft shredder is used for the safe destruction of expired or withdrawn products, returned pharmaceutical packaging and damaged food products; the discharge screen guarantees that the destroyed product cannot be reconstituted or reused, providing physical proof of destruction.

The ZY-S Single-Shaft Shredder vs the ZY-DT Dual-Shaft Shredder — When to Choose the Single Shaft

• Choose the ZY-S single-shaft shredder when the fragment size at the outlet must be controlled — the discharge screen of the ZY-S guarantees that no fragment larger than the screen opening size leaves the chamber; dual-shaft shredders (ZY-DT) have no screen and produce fragments of variable sizes, some larger, which can be problematic for downstream recycling processes that require uniform particle size.

• Choose the ZY-S single-shaft shredder for plastic, paper, soft rubber and non-metallic WEEE — the rotor with V or spiral knives of the ZY-S is optimised for materials with elastic or layered behaviour (plastic, cardboard, rubber) that absorb the cutting energy; the ZY-DT dual-shaft shredder with a dual motor is sized for the tensile strength of the wire-reinforced rubber of whole tyres, not for the fragmentation of plastic or paper.

• Choose the ZY-DT dual-shaft shredder for whole tyres — whole tyres with steel wire require the dual-motor system and the specific blades of the ZY-DT; the ZY-S single-shaft shredder can process pre-cut tyre pieces, but not whole tyres.

• Choose the ZY-S scrap metal shredder for ferrous and non-ferrous metals — although both pieces of equipment carry the ZY-S code, the scrap metal shredder has flat Cr12MoV blades optimised for hard metals, without a screen, while the single-shaft shredder has a rotor with V/spiral knives and a screen — completely different configurations for different materials.

Industries and Applications — Who Uses the ZY-S Single-Shaft Shredder

• Plastic recyclers — controlled particle size for extruders and granulators — the ZY-S single-shaft shredder produces plastic fragments at the size specified by the chosen screen, directly compatible with the feed opening of the extruder or granulator in the next stage; the uniform size of the fragments optimises the productivity of the pelletising stage and reduces rejects compared with feeding non-uniform fragments.

• Authorised WEEE recycling centres — the ZY-S single-shaft shredder fragments dismantled electronic components for the separation of valuable fractions (precious metals, copper, aluminium) from plastic and other non-metallic materials; the controlled fragment size maximises the efficiency of downstream separation processes.

• Secure document and product destruction firms — the ZY-S single-shaft shredder with a small-opening screen is the certified equipment for the safe destruction of confidential documents, counterfeit products, returned defective clothing, expired pharmaceuticals and any products that must be physically destroyed with documentation of the process.

• Industrial producers with process plastic waste — the ZY-S single-shaft shredder processes plastic rejects from injection moulding and extrusion (sprues, non-conforming parts, thickened materials) at the right size for reintroduction into the production process as internally recycled material; internal recovery of plastic waste eliminates the cost of purchasing virgin raw material for part of production.

• Collection-centre operators with mixed plastic and WEEE flows — the ZY-S single-shaft shredder efficiently handles mixed flows of recyclable materials through its versatility: the same machine processes rigid plastic, cables and non-metallic WEEE with the same screen or with different screens for each material, without requiring separate equipment for each category.

Frequently Asked Questions about the ZY-S Single-Shaft Shredder

What screen size should be chosen for the ZY-S single-shaft shredder when recycling plastic?

The screen opening size for the ZY-S single-shaft shredder depends on the final application of the shredded plastic: for feeding a laboratory granulator, openings of 10–20 mm; for a standard industrial granulator, 20–40 mm; for filler in composite materials, 5–10 mm; UZINEX engineers recommend the screen size based on the type of plastic processed and the technical specifications of the granulator in the downstream stage. Can the ZY-S single-shaft shredder process plastic with high moisture or contamination?

The ZY-S single-shaft shredder can process plastic with moderate moisture without mechanical problems; plastic heavily contaminated with food or chemical residues requires more frequent cleaning of the cutting chamber to prevent corrosion of the knives and the screen; for flows with severe contamination, UZINEX engineers recommend pre-washing the material before shredding to maximise knife service life. How many of the rotor knives can be replaced independently on the ZY-S single-shaft shredder?

The ZY-S single-shaft shredder has knives mounted modularly on the main rotor; worn knives are identified individually by visual inspection and replaced selectively without dismantling the other knives or the rotor; the ZY-S600 model has 26 rotor knives + 4 fixed knives, while the ZY-S1500 model has 98 knives — each removable independently; replacement knife sets in Cr12MoV, SKD11 and D2 are available in stock at UZINEX. Is the ZY-S single-shaft shredder suitable for the destruction of products with legal compliance requirements?

The ZY-S single-shaft shredder with a discharge screen can form part of a documented destruction process for products with legal requirements (pharmaceuticals, branded products, data on physical media); for full compliance, the destruction process must be supplemented by documenting the series of screen used, the weight of the destroyed material and destruction certificates; UZINEX engineers advise the customer on choosing the appropriate technical configuration at commissioning. Why Choose UZINEX for the ZY-S Single-Shaft Shredder

• Pre-purchase consultancy — model, screen and knives for the specific material — UZINEX engineers analyse the type of material processed, the daily volume, the desired fragment size and the final application of the shredded material in order to recommend the correct ZY-S single-shaft shredder model and the optimal configuration of screen and knives from the Cr12MoV, SKD11 or D2 series.

• Transport and commissioning included — the ZY-S single-shaft shredder (2.200–9.800 kg) is delivered with specialised equipment anywhere in Romania; at commissioning, UZINEX engineers fit the specified screen, test all protection functions and calibrate the equipment on the customer’s real material.

• Extended 60-month warranty and spare parts in stock — the ZY-S single-shaft shredder benefits from a 60-month warranty; replacement Cr12MoV/SKD11/D2 knives, interchangeable screens, bearings and transmission elements are kept in stock at UZINEX for fast replacement.

• Nationwide service with intervention within 24–48h — the UZINEX service team intervenes on site anywhere in Romania; the availability of replacement knives and screens in stock minimises downtime for routine replacements.

• Financing and European-funding eligibility — leasing and credit solutions available; the ZY-S single-shaft shredder qualifies for European funding as an investment in recycling and waste management.

• Complete range for any recycling flow — UZINEX offers complete solutions for shredding and crushing: the ZY-S single-shaft shredder for plastic, WEEE and paper; the ZY-S scrap metal shredder for metals; the ZY-DT whole-tyre shredder for tyres; the ZY-SW wire separator for the rubber recycling line — all available with integrated nationwide service and a 60-month warranty.

The ZY-S single-shaft shredder, with its rotor with V or spiral knives, an interchangeable discharge screen for controlled fragment size, modularly re-sharpenable Cr12MoV/SKD11/D2 knives, overload protection and low rotation speed with high torque, is the industrial shredding equipment for rigid and flexible plastic, cables, WEEE, paper, cardboard and soft rubber — available in 5 models from 22 kW (600×600 mm) to 110 kW (1.500×1.500 mm) for any recycling-line capacity.