HN-M Dual-Shaft Shredder | 3 Models 4–30kW, Heat-Treated Frame, PLC Reversal | UZINEX

The HN-M series dual-shaft shredder is the industrial shredding equipment with two counter-rotating shafts, a frame welded from high-quality steel and heat-treated to relieve internal stresses, and PLC control with automatic shaft reversal on overload, available in three sizes: HN-M180A (4 kW, 320 kg capacity, 1.200×600×1.000 mm), HN-M400A (15 kW, 680 kg, 1.200×600×1.200 mm) and HN-M500 (15 kW × 2, 1.200 kg, 1.900×600×1.200 mm), 380V three-phase supply — designed for processing mixed materials from plastic, rubber, wood, metals, electronic waste, paper, cables, tyres, municipal solid waste and food residues.

The HN-M dual-shaft shredder differs fundamentally from single-shaft shredders through the absence of a discharge screen and through the simultaneous action of two shafts rotating in opposite directions, drawing the material into the cutting zone without requiring an additional pusher; the material is torn and cut between the blades of the two shafts and is discharged directly under its own weight once the fragments are small enough to pass between the shafts — combining high throughput, maximum versatility on mixed materials and compact dimensions in the same machine. Key Advantages of the HN-M Dual-Shaft Shredder

• Heat-treated welded frame for relieving internal stresses — superior structural durability — the HN-M dual-shaft shredder has a frame welded from high-quality steel and subjected to stress-relief heat treatment after welding; the heat treatment eliminates the residual stresses in the weld structure that would otherwise cause gradual deformation and cracking under the repeated loads of processing hard materials; the heat-treated frame of the HN-M dual-shaft shredder maintains the alignment of the shafts and bearings throughout the equipment’s service life, regardless of the number of load cycles.

• Two counter-rotating shafts — automatic material feeding without a pusher — the HN-M dual-shaft shredder has two shafts rotating in opposite directions; this counter-rotation generates a drawing force that pulls the material from the feed chamber into the cutting zone without requiring an additional hydraulic pusher; bulky material thrown into the feed chamber of the HN-M dual-shaft shredder is automatically gripped by the two shafts and processed without operator intervention for each piece fed.

• Automatic shaft reversal via PLC — zero blockages left unresolved manually — the HN-M dual-shaft shredder monitors the motor current via PLC and detects overload when a hard object jams between the shafts; on jamming, the PLC automatically reverses the direction of rotation of both shafts simultaneously, releasing the trapped object and resuming cutting in the normal direction; the automatic reversal of the HN-M dual-shaft shredder eliminates the need to stop the line manually at each jam, essential when the processed material is heterogeneous and occasionally contains parts of unexpected resistance.

• Compact format — the smallest model at 4 kW and 1.200×600×1.000 mm — the HN-M180A dual-shaft shredder, at 4 kW and dimensions of 1.200×600×1.000 mm, is the most compact industrial shredder available at UZINEX; the small dimensions allow installation in confined spaces where single-shaft equipment or larger scrap metal shredders cannot be placed; the HN-M180A dual-shaft shredder is the solution for small workshops, repair shops and collection points with limited space.

• The widest range of materials — plastic, rubber, wood, metal, WEEE, municipal, food — the HN-M dual-shaft shredder processes the most diverse range of materials in the entire UZINEX recycling equipment catalogue: rigid and flexible plastic, rubber, wood and furniture residues, light metals, WEEE, paper, cables, tyres, municipal solid waste and food residues — all with the same machine without reconfiguration; the versatility of the HN-M dual-shaft shredder is at its maximum compared with shredders specialised in a single type of material.

• Alloy-steel blades with high wear resistance — extended service life on heterogeneous materials — the HN-M dual-shaft shredder has blades made of alloy steel with high resistance to abrasive wear; the heterogeneous materials processed by the dual-shaft shredder — especially mixed ones with hard inclusions (WEEE with small metal parts, reinforced rubber, wood with nails) — cause uneven abrasive wear on the blades; the alloy steel chosen for the HN-M dual-shaft shredder balances the hardness needed for wear resistance with the toughness needed to absorb impulsive shocks.

• 380V three-phase — stable power when processing hard and dense materials — the HN-M dual-shaft shredder runs on a 380V three-phase supply; the three-phase supply provides the stable torque needed to process materials of varying resistance (wood, rigid plastic, rubber) without speed variations or voltage overloads on the motors; the HN-M500 model with 15 kW × 2 (30 kW total) benefits from the three-phase supply for the independent operation of the two motors with torque optimally distributed on each shaft.

Technical Specifications — HN-M Dual-Shaft Shredder (All Models)

Operating Principle of the HN-M Dual-Shaft Shredder

• Feeding through the upper chamber — the operator introduces the material into the upper feed chamber of the HN-M dual-shaft shredder; the two counter-rotating shafts generate a drawing force that pulls the material down toward the cutting zone without manual intervention per piece fed.

• Tearing and cutting between the two shafts — the blades of the two shafts of the HN-M dual-shaft shredder interlock slightly and act through shearing and tearing; the combined action fragments the material by traction and cutting simultaneously, effective on flexible materials (films, textiles) that cannot be cut efficiently by compression.

• Gravity discharge below the shafts — the fragments produced by the HN-M dual-shaft shredder fall by gravity between the shafts and are collected in the container beneath the equipment; the size of the discharged fragments depends on the distance between the shafts and the blade profile; without a screen, the size is not precisely controlled but throughput is higher than with screened shredders.

• Automatic reversal on overload — the PLC of the HN-M dual-shaft shredder continuously monitors the current; upon detecting an overload, it simultaneously reverses both shafts, releases the trapped material and resumes the normal cutting cycle after a few seconds; operator intervention is not needed for standard unblocking.

The HN-M Dual-Shaft Shredder vs the Other Shredders in the UZINEX Range

The HN-M dual-shaft shredder occupies a distinct niche in the UZINEX recycling equipment range — that of maximum versatility on mixed materials in a compact format:

• Compared with the ZY-S single-shaft shredder — the HN-M dual-shaft shredder has no screen, so it does not precisely control fragment size; it is preferred when versatility on mixed materials and throughput are priorities over the precise particle size needed when recycling plastic for pelletising; the HN-M dual-shaft shredder also processes fibrous materials (textiles, wood) that the single-shaft type handles less easily without a pusher.

• Compared with the ZY-S scrap metal shredder — the HN-M dual-shaft shredder covers a wider range of materials (including wood, municipal waste, food residues) and is available in a much more compact format (4 kW, 1.200×600×1.000 mm); the ZY-S scrap metal shredder with Cr12MoV blades is optimised exclusively for hard metals and does not efficiently process soft or organic materials.

• Compared with the ZY-DT whole-tyre shredder — the HN-M dual-shaft shredder is the general versatile machine; the ZY-DT shredder with a dual motor of 60–180 kW and a mass of 8,5–15 tonnes is specialised exclusively for whole tyres at large industrial volumes; the HN-M dual-shaft shredder can process pre-cut tyre pieces, but not whole tyres and not at the volume of the ZY-DT.

• Optimal sizing HN-M180A vs. HN-M400A vs. HN-M500 — the HN-M180A (4 kW, 320 kg) is the solution for workshops, shops and small collection points; the HN-M400A (15 kW, 680 kg) covers medium installations with daily flows of 3–6 tonnes; the HN-M500 (30 kW, 1.200 kg) serves recycling centres with flows of 8–12 tonnes per day.

Materials Compatible with the HN-M Dual-Shaft Shredder — The Complete Range

• Rigid and flexible plastic — the HN-M dual-shaft shredder processes plastic containers, crates, jerry cans, PVC profiles, films and bags; the tearing action of two counter-rotating shafts is also effective on flexible films that wrap around the single shaft of single-shaft shredders.

• Wood and furniture residues — the HN-M dual-shaft shredder processes boards, panelling, frames, disassembled furniture and chipboard or MDF residues; applying blades on two shafts generates the tearing forces needed to fragment wood without frequent blockages.

• Rubber and pre-cut tyres — the HN-M dual-shaft shredder processes rubber pieces, industrial gaskets and pre-cut tyres (sectioned beforehand); for whole tyres, the specialised ZY-DT shredder is recommended.

• Light metals and WEEE — the HN-M dual-shaft shredder fragments aluminium, copper, appliance housings and dismantled WEEE components; for iron and hard steel, the ZY-S scrap metal shredder with Cr12MoV blades is recommended.

• Mixed municipal solid waste — the HN-M dual-shaft shredder is used in municipal waste sorting stations to reduce the volume of solid waste before sorting or compaction; solid waste management is one of the main sectors using dual-shaft shredders worldwide.

• Food residues for composting — the HN-M dual-shaft shredder processes organic food residues (vegetables, fruit, kitchen scraps) to reduce their size before the industrial composting or anaerobic digestion process; smaller fragments accelerate microbiological decomposition and increase the yield of compost or biogas production.

• Paper, cardboard and cables — the HN-M dual-shaft shredder shreds loose paper and cardboard, cable bundles and textiles to reduce volume before baling or further processing.

Industries and Applications — Who Uses the HN-M Dual-Shaft Shredder

• Industrial recycling centres with mixed flows — the HN-M dual-shaft shredder is the ideal machine for centres receiving heterogeneous unsorted waste: plastic, wood, rubber, light metal and WEEE in the same batch; a single HN-M dual-shaft shredder processes the entire mixed flow without requiring separate lines per material category.

• Municipal waste sorting stations — the HN-M dual-shaft shredder reduces the volume of municipal solid waste before mechanical or manual sorting; reducing the volume increases the processing capacity of the sorting line and lowers the cost of transporting the waste to the final treatment facilities.

• Food industry and industrial composting — the HN-M dual-shaft shredder processes food residues from processing plants, high-volume restaurants and markets; the fragments produced by the HN-M dual-shaft shredder have the optimal size to accelerate fermentation in composting or biogas facilities.

• Producers with mixed process waste — the HN-M dual-shaft shredder handles the heterogeneous industrial waste generated by plants with composite products (furniture with metal fittings, appliances with plastic housings and metal components); a single versatile machine replaces several specialised shredders.

• Merchandise and returned-product destruction services — the HN-M dual-shaft shredder physically destroys expired goods, defective products and returns with packaging, regardless of the composite material of the product; versatility on mixed materials is essential when the products to be destroyed combine plastic, paper, metal and other materials in the same item.

Frequently Asked Questions about the HN-M Dual-Shaft Shredder

Does the HN-M dual-shaft shredder produce uniformly sized fragments like the single-shaft shredder with a screen?

No. The HN-M dual-shaft shredder has no discharge screen, so it does not precisely control the maximum fragment size; the fragments are discharged by gravity once they are small enough to pass between the shafts, producing a more variable size distribution than the single-shaft shredder with a screen; if precise fragment particle size is critical for the downstream process, the ZY-S single-shaft shredder with an interchangeable screen is recommended. Can the HN-M180A dual-shaft shredder (4 kW) process thick rigid plastic — crates, jerry cans?

The HN-M180A dual-shaft shredder, at 4 kW, is designed for materials of moderate resistance; plastic crates and empty jerry cans can be processed efficiently; thick rigid plastic (over 10–15 mm thickness) or large parts require the HN-M400A (15 kW) or HN-M500 (30 kW) model to provide sufficient torque; UZINEX engineers assess the customer’s specific material and recommend the correct model on request. Can the HN-M dual-shaft shredder process wet waste or waste with residual liquids?

The HN-M dual-shaft shredder can process materials with moderate moisture and minor liquid residues; food residues and municipal waste with natural moisture are processed without mechanical problems; large volumes of free liquid in the feed chamber can affect shaft lubrication and must be avoided; after processing wet materials, cleaning the cutting chamber is recommended to prevent corrosion and the build-up of organic residues. What capacity difference is there between the HN-M400A and the HN-M500, and when is the larger model justified?

The HN-M400A dual-shaft shredder produces 680 kg per batch compared with 1.200 kg for the HN-M500; the HN-M500 also has double the power (30 kW versus 15 kW) thanks to two independent 15 kW motors, which also allows it to process harder materials at the same throughput; if the daily flow exceeds 5–6 tonnes or the material includes parts of higher resistance, the additional investment in the HN-M500 is justified by the higher productivity and the additional torque available. Why Choose UZINEX for the HN-M Dual-Shaft Shredder

• Pre-purchase consultancy — the correct model for the material type and volume — UZINEX engineers analyse the type of materials processed, the daily volume and the maximum dimensions of the pieces fed in order to recommend the suitable HN-M dual-shaft shredder model and to confirm whether the HN-M or a specialised shredder (ZY-S single-shaft, ZY-DT tyres) is the optimal solution for the customer’s specific flow.

• Transport and commissioning included — the HN-M dual-shaft shredder is delivered free of charge anywhere in Romania; UZINEX engineers test all PLC functions (automatic reversal, overload protection), check the shaft alignment and train the operator at commissioning.

• Extended 60-month warranty and spare parts in stock — the HN-M dual-shaft shredder benefits from a 60-month warranty; replacement alloy-steel blades, shaft bearings and PLC components are kept permanently in stock at UZINEX.

• Eligible for public procurement SEAP/SICAP — the HN-M dual-shaft shredder can be procured through public procurement procedures by sorting stations, sanitation services and public authorities with solid-waste management obligations.

• Nationwide service with intervention within 24–48h — the UZINEX service team intervenes on site anywhere in Romania for any fault on the HN-M dual-shaft shredder.

• Financing through credit and leasing — financing solutions available; the HN-M dual-shaft shredder qualifies for European funding as an investment in waste management and the circular economy.

• Complete range of shredders for any material — UZINEX offers complete solutions for shredding and crushing: the HN-M dual-shaft shredder for versatile mixed materials, the ZY-S single-shaft shredder for plastic with controlled particle size, the ZY-S scrap metal shredder for hard metals and the ZY-DT whole-tyre shredder for the rubber recycling line — all with integrated nationwide service and a 60-month warranty.

The HN-M dual-shaft shredder, with its heat-treated welded frame, two counter-rotating shafts with automatic feeding, PLC with automatic shaft reversal on overload, wear-resistant alloy-steel blades and 380V three-phase supply, is the versatile shredding equipment for mixed materials — plastic, rubber, wood, light metal, WEEE, municipal waste and food residues — available in three models from 4 kW (compact industrial desktop format) to 30 kW (medium recycling installations).