Dual-Shaft Recycling Shredder | D600–D2200 | 4 Knife Types | SKD11 HRC62

RELIABLE D-series dual-shaft recycling shredder — the industrial equipment with two synchronized shafts for shredding materials destined for recycling: ferrous and non-ferrous metals, household appliances, WEEE, tyres, lithium batteries, cables and solar panels. Available in eight models D600–D2200 with capacities from 500 kg/h to over 1200 kg/h.

Compared with single-shaft models at the same installed power, this dual-shaft recycling shredder produces 40% more, with SKD11 vacuum-hardened HRC62 knives changeable in 25 minutes versus 2 hours on traditional models.

The RELIABLE design philosophy for this dual-shaft recycling shredder comes down to four measurable parameters: more processed volume, higher shredding speed, better long-term stability and lower maintenance costs. Every specification — the 3D structure with stiffening ribs, the manganese steel liners that reduce wear by 75%, the failure rate of 0.35% versus the industry average of 1.2% and the maintenance cycle at 500 hours versus the standard 300 hours — is documented with comparative measurements against competing models. Key Advantages of the RELIABLE Dual-Shaft Recycling Shredder

• +40% capacity versus single-shaft models at the same installed power: The D1000 processes 900 kg/h of 3mm cold-rolled steel sheet; single-shaft models with the same power reach 500 kg/h. The D800 processes aluminium bars at 750 kg/h — 50% more than equivalent single-shaft models. Two synchronized shafts cut the material in two successive steps within the same rotation cycle, eliminating the jams and kickbacks specific to single-shaft shredders.

• SKD11 vacuum-hardened HRC62 knives — 1.6× the durability of standard knives: SKD11 die steel is one of the hardest materials available for industrial knives; vacuum hardening to HRC62 eliminates the thermal distortion and residual stresses that reduce the durability of knives with conventional heat treatment. The result: each set of knives lasts 1.6 times longer than standard knives, reducing the frequency and cost of changeover.

• Rapid blade change — 25 minutes instead of 2 hours: The modular quick-change structure of this dual-shaft recycling shredder allows a complete set of blades to be changed in 25 minutes without special tools or dismantling the shafts — versus the 2 hours required on traditional models. On an 8-hour shift, this means a blade change no longer halts production for half a working day.

• 4 knife types for any material — Equipment, SW, VZ and Pineapple: Each type of processed material has its optimal knife geometry: Equipment knife for heavy metals (refrigerators, metal drums); SW-type for brittle materials and aluminium (motor housings, wood); VZ for thin and light materials (aluminium packaging, car bodies); Pineapple knife for hard plastic and circuit boards, which reduces the material to under 10mm — the perfect configuration for WEEE recycling lines.

• 3D structure with stiffening ribs — +40% impact resistance, -12dB noise: Thickened steel sheet welded with three-dimensional 3D stiffening ribs increases resistance to the impact of hard metals by 40% versus conventional flat housings, while also reducing the noise level by 12 decibels — a direct advantage for compliance with industrial noise regulations in Romania and the EU.

• Wear-resistant manganese steel liners — service life >5 years: The special manganese steel liners covering the shredding chamber reduce wall wear by 75% versus standard carbon steel liners. Combined with the SKD11 knives, this extends the total service life of the shredder to over 5 years of intensive use without rebuilding the shredding chamber.

• 0.35% failure rate — versus the industry average of 1.2%: The annual failure rate of 0.35–0.48% of the RELIABLE series is three times lower than the industry average of 1.2%. This means a RELIABLE shredder fails on average once every 200–285 days, versus once every 83 days for an average industry shredder — a decisive difference for operators who cannot afford unplanned downtime.

• Maintenance costs documented at 18–22% lower: The cost of replacing the blades per cycle is 18% lower on the D600 and 22% lower on the D1200 versus similar industry products. The initial maintenance cycle at 500 hours (versus the standard 300 hours) reduces the number of annual interventions and the total cost of ownership over the service life of the equipment.

Models and Capacities — RELIABLE Dual-Shaft Recycling Shredder

Knife Types — Configuring the Shredder for Your Material

Selecting the correct knife type for a dual-shaft recycling shredder determines energy efficiency, product particle size and the service life of the blade set. RELIABLE offers four knife geometries, each optimized for a category of materials:

• Equipment knife: Robust geometry for heavy metals — refrigerators, metal drums and containers, steel structures. The knife profile distributes the cutting force over a wider area, preventing the blade from breaking on impact with materials of high mechanical strength.

• SW-type knife: Designed for brittle or crumbling materials — wood, cast aluminium housings (engine blocks, gearboxes), brittle plastic. The SW geometry initiates controlled cracking of the material without requiring the brute cutting force of the Equipment knife — better energy efficiency on low-strength materials.

• VZ knife: Optimal for thin and light materials — aluminium packaging, vehicle bodies, thin steel sheet. The VZ profile cuts the material with a shearing motion, producing uniform pieces with controlled particle size for subsequent baling or sorting lines.

• Pineapple knife: The solution for hard plastic and PCB circuit boards. The multi-edge profile of the pineapple knife reduces the material to dimensions under 10mm — particle size directly suited to the electrostatic and gravity separators in WEEE recycling lines, with no intermediate crushing pass.

Applications — Materials Processed by the RELIABLE Dual-Shaft Recycling Shredder

A RELIABLE-series dual-shaft recycling shredder is the entry point of any metal and WEEE recycling line. Recycling stations, end-of-life vehicle dismantling plants and operators managing waste electrical and electronic equipment use the D800–D1200 shredders as the first processing stage — reducing refrigerators, motors, rims and appliance housings to 50–150mm pieces ready to feed the crushers or separators in the secondary stage.

Manufacturers managing production waste — burrs and metal scrap from stamping, rejected sheets, cable and connector offcuts — use this dual-shaft recycling shredder to reduce waste volume and prepare it for recovery as secondary raw material. The VZ and SW knives cover the range of typical materials from the production of automotive components, electronics and industrial packaging. Explore the complete range of Uzinex industrial equipment for complete solutions in recycling and processing industrial waste.

Companies recycling lithium batteries, used photovoltaic panels and electrical cables use RELIABLE-type dual-shaft recycling shredder systems as the first fragmentation stage before separating the valuable components — copper, aluminium, polymers — through hydrometallurgical or density separation processes, in accordance with international standards for processing electrical and electronic waste. How It Works — The Shredding Process with the RELIABLE D-Series

• Material feeding and overload detection: The material to be shredded is fed into the chamber of this dual-shaft recycling shredder manually or by conveyor belt. The control system with servo motors monitors the torque on each shaft — when a hard, non-shreddable object is detected (a stone, a massive metal object), the system automatically reverses the rotation to clear the jam without damaging the knives.

• Synchronized shredding on two shafts: The two shafts rotate in opposite directions at slightly different speeds — the main shaft at 38 rpm, the secondary shaft at 35 rpm (D600) — creating a shearing and pulling force that draws the material between the knives and reduces it to the dimensions set by the retention grate.

• Controlled particle size through the discharge grate: The shredded material passes through the chamber's discharge grate only when it has reached the maximum set size. Oversized pieces remain in the shredding chamber and are re-shredded on the next cycle — uniform output particle size without manual sorting.

• Discharge and transport to the secondary stage: Material shredded to the set size falls by gravity or is discharged by conveyor belt towards the secondary crusher, the magnetic separator or the electrostatic separator — depending on the configuration of the recycling line.

• Preventive maintenance at 500 hours: Every 500 operating hours, the operator checks and, if necessary, replaces the knife set in 25 minutes via the quick-change structure. The manganese steel liners are inspected visually at the same interval — their 25% wear versus standard liners ensures that the liner replacement interval is significantly longer than the knife change cycle.

Frequently Asked Questions about the RELIABLE Dual-Shaft Recycling Shredder

How do I choose the D600, D800, D1000 or D1200 model for my facility?

Model selection is based on the daily volume of material processed and the dominant material type. The D600 (500–600 kg/h) covers small collection and recycling stations with 4–6 operating hours per day. The D800 (700–800 kg/h) is the standard model for medium-volume dismantling plants. The D1000 (800–1000 kg/h) covers metal processing plants with full-time operation. The D1200 (1000–1200 kg/h) is the solution for large recycling centres with continuous flow. The UZINEX team analyzes your volume and materials and recommends the dual-shaft recycling shredder model with the best cost-to-capacity ratio. What is the "Pineapple" knife and why is it essential for WEEE recycling?

The Pineapple knife has multiple cutting edges distributed across the circular profile of the blade — similar to a pineapple — which fragment hard material, such as PCB boards and hard plastic components, to dimensions under 10mm in a single shredding pass. For WEEE recycling lines, this eliminates the intermediate crusher before the electrostatic or gravity separator, reducing the number of pieces of equipment in the line and the total cost of the installation. SKD11 knives at HRC62 — how often do they need replacing versus standard knives?

SKD11 knives at HRC62 last 1.6 times longer than standard carbon steel knives. On a shredder running 16 hours a day, 250 days a year, this means that if a standard set lasts 6 months, the SKD11 knives last almost 10 months — 4 fewer changes per year, each taking 25 minutes with the quick-change structure. The savings in downtime and blade cost add up significantly over the service life of the equipment. What happens if a hard object (a stone, a massive bolt) enters the shredder?

This dual-shaft recycling shredder is equipped with servo motors that monitor torque in real time. When the maximum torque is exceeded — a sign that a non-shreddable object is jammed between the knives — the system automatically reverses the rotation of both shafts to clear the jam and restarts in the normal direction. This prevents damage to the knives and shafts on impact with objects of extreme hardness, without operator intervention. Can the shredder process lithium batteries safely?

Yes — lithium batteries are explicitly listed in the applications of the RELIABLE series. Processing lithium batteries requires additional precautions compared to inert materials: adequate ventilation, a fire suppression system and specific operating procedures to manage the risk of short circuit and ignition. The UZINEX team can provide consultancy for configuring the lithium battery processing line with the necessary safety measures. Why Buy the RELIABLE Dual-Shaft Recycling Shredder from UZINEX?

• Free consultancy for model and knife type selection: The UZINEX team analyzes the materials processed, the daily volume and the configuration of your existing recycling line and recommends the D-series model and knife combination with maximum throughput for your specific application.

• Delivery, commissioning and staff training included: Every RELIABLE dual-shaft recycling shredder delivered through UZINEX includes installation and commissioning on your site and operator training for correct use, preventive maintenance at 500 hours and rapid blade change in 25 minutes.

• Extended 60-month warranty and technical support under 36 hours: The 60-month warranty and the guaranteed response time under 36 hours ensure the continuity of recycling operations — with priority delivery of SKD11 knives and replacement liners from UZINEX's own stock.

• A globally proven solution — active installations in Europe, Asia and South America: The RELIABLE series — this dual-shaft recycling shredder — is installed in recycling facilities in Europe, Southeast Asia and South America — operating references under real production conditions, not pilot projects. Available on request.

• Custom configuration for any material or volume: D1400–D2200 models for large industrial volumes, special knife configurations for non-standard materials and integration into complete recycling lines — RELIABLE designs the complete solution, UZINEX delivers it and commissions it in Romania.

RELIABLE dual-shaft recycling shredder D600–D2200 — 40% more efficient than single-shaft models, SKD11 HRC62 knives changeable in 25 minutes, manganese liner with a service life >5 years and a failure rate 3 times below the industry average, for recycling stations handling metals, WEEE, lithium batteries and tyres that need more capacity at documented lower maintenance costs.