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Product Description
The XB-L Series Single Shaft Shredder is a low-speed, high-torque, single-rotor shredding solution engineered specifically for soft to medium-hard materials. Designed and manufactured by Chenxing Machinery in Zhangjiagang, China, this series delivers reliable coarse shredding for downstream granulation and pulverizing processes across plastic recycling, rubber processing, textile waste handling, and wood scrap reduction.
The machine operates on a proven hydraulic ram-feed principle: material loaded into the hopper is continuously pushed by a reciprocating hydraulic ram toward the high-speed rotating main shaft rotor. Moving knives mounted on the rotor interface with fixed knives positioned above and below the shaft, creating a scissor-like shear action that progressively tears large feedstock into smaller strips and chips. Shredded particles pass through a bottom screen when they reach the target size, while oversized material remains in the cutting chamber for further reduction.
Key design highlights include a full-chamber reciprocating feed motion that eliminates dead zones and prevents jamming, a large-diameter main shaft (Φ300–Φ500 mm) that maximizes shear contact area, a direct-coupled gearbox drive that reduces vibration and power loss compared to belt-driven alternatives, a dual fixed-knife arrangement (top and bottom) that prevents material wrapping around the shaft, and a PLC-based control system with automatic overload reverse-and-retract protection. When hard contaminants enter the cutting chamber, the system automatically reverses the rotor, ejects the obstruction, and resumes forward rotation — protecting both the knives and drivetrain from damage.
| Model | Shaft Diameter (mm) | Moving Knives (pcs) | Fixed Knives (pcs) | Max Capacity (kg/h) | Motor Power (kW) | Feed Mouth L×W (mm) | Weight (kg) | Dimensions L×W×H (mm) |
|---|---|---|---|---|---|---|---|---|
| XB-L2455 | 300 | 24 | 2 | 400 | 22 | 800×1300 | 3600 | 3250×1500×2350 |
| XB-L3063 | 300 | 30 | 2 | 550 | 30 | 900×1300 | 4000 | 3250×1750×2350 |
| XB-L3980 | 350 | 39 | 2 | 750 | 45 | 1100×1500 | 6000 | 4150×1900×2450 |
| XB-L36100 | 400 | 36 | 2 | 1200 | 55 | 1300×1800 | 8000 | 4700×2550×2650 |
| XB-L42120 | 400 | 42 | 2 | 1500 | 75 | 1500×1900 | 9500 | 5350×2850×2760 |
| XB-L64160 | 500 | 64 | 4 | 5000 | 132 | 2200×2200 | 18000 | 5900×3050×2960 |
Capacities are indicative and depend on material type, bulk density, screen aperture, and feed consistency.
| Component | Specification |
|---|---|
| Moving Knives | Alloy tool steel, heat-treated to HRC 56–60. Replaceable design with counter-bored bolt mounting. Quantity varies by model: 24 to 64 pcs. |
| Fixed Knives | D2 / SKD-11 tool steel. Dual-knife layout — one above and one below the rotor shaft (XB-L64160: 4 fixed knives). Adjustable gap between fixed and moving knives for optimal shear clearance. |
| Main Shaft / Rotor | Large diameter Φ300–Φ500 mm, forged from 40Cr alloy steel with quenching and tempering treatment. Precision-machined knife-mounting grooves. Designed for high radial load and impact resistance. |
| Hydraulic Ram / Pusher | Reciprocating hydraulic ram with full-chamber travel. Thrust force tailored to model (up to several tonnes). Continuously pushes material toward the rotor without dead zones. Hydraulic power unit with adjustable speed and pressure. |
| Gearbox / Reducer | Heavy-duty industrial gearbox, direct-coupled via flexible coupling. High reduction ratio for low-speed / high-torque output. Branded unit (SINOTOP or equivalent), splash-lubricated. |
| Drive System | Direct coupling between motor and gearbox via flexible coupling and shear-pin protection. Eliminates belt slippage, reduces vibration, and maximizes power transmission efficiency. Iron safety pins provide mechanical overload protection upstream of PLC logic. |
| PLC Controller & HMI | Programmable Logic Controller with color touchscreen HMI interface. Functions: Start Stop Forward Reverse Auto-Reverse on Overload / Emergency Stop. Real-time monitoring of motor current, hydraulic pressure, and running hours. |
| Overload Auto-Reverse Logic | When motor current exceeds preset threshold (indicating jam or hard contaminant), PLC commands automatic rotor reversal. The rotor rotates backward briefly to eject the obstruction, then resumes forward rotation. Cycle repeats up to a configurable retry limit before requiring operator intervention. |
| Screen / Sieve | Replaceable perforated screen positioned beneath the rotor. Controls output particle size. Standard aperture range: 10–80 mm (customizable). Material: wear-resistant steel plate. Quick-change design with bolted access panel. |
| Main Motor | Three-phase asynchronous motor, IP55 protection, F-class insulation. Brand: domestic premium or optional European brand (Siemens, WEG). Power range: 22 kW to 132 kW across the series. |
| Hopper Liner | Replaceable wear-resistant steel liner plates (Hardox or equivalent). Protects hopper walls from abrasion by heavy or sharp-edged materials. |
| Machine Frame / Base | Heavy welded steel structure, stress-relieved after welding. Integrated vibration-dampening feet or anchor bolt provisions. Designed for minimal floor footprint per output capacity. |
Full-Chamber Reciprocating Feed Motion — The entire hopper chamber moves in a reciprocating cycle, eliminating feeding dead zones and ensuring continuous, jam-free material delivery to the rotor. No manual intervention needed to clear bridging or blockages.
Oversized Main Shaft Rotor — Custom-designed large-diameter shaft (Φ300–Φ500 mm) maximizes the shear contact surface between moving and fixed knives. Greater contact area translates directly to higher throughput per revolution.
Direct-Coupled Drive System — The motor-to-gearbox connection uses a flexible coupling instead of belt drive. This design reduces vibration, protects the gearbox and main shaft bearings, and eliminates belt slippage power loss. Shear pins add a mechanical safety layer.
Dual Fixed Knife Configuration (Top & Bottom) — Fixed knives positioned both above and below the rotor create two cutting zones per revolution. This dual-shear geometry prevents soft materials from wrapping around the shaft — a common failure mode in single-knife designs — and produces smaller, more uniform output particles.
PLC Intelligent Control with Auto-Reverse — The proprietary PLC program manages start, stop, forward rotation, reverse rotation, and automatic overload protection. When the system detects an overload (hard contaminant or excessive feed), it automatically reverses the rotor to eject the obstruction, then resumes forward rotation — all without manual intervention.
Replaceable Wear Components — Moving knives, fixed knives, hopper liners, and the screen are all designed for quick replacement. Downtime between knife changes is minimized by accessible mounting and standardized bolt patterns.
Adjustable Output Particle Size — The bottom screen is available in multiple aperture sizes (10–80 mm range). Simply swap the screen to adjust output particle size for different downstream processes — coarse shredding for granulators or finer output for pulverizers.
Heavy-Duty Welded Frame — The machine base is a stress-relieved welded steel structure designed for long-term stability under high vibration and impact loads. Generously dimensioned bearing housings and robust shaft supports ensure extended service intervals.
The XB-L Series Single Shaft Shredder handles a wide range of soft to medium-hard materials commonly found in recycling and waste management operations:
PE Film Recycling — Shredding post-consumer and post-industrial polyethylene film (LDPE LLDPE HDPE) into flakes for washing lines and pelletizing systems.
PP Woven Bag & Jumbo Bag Shredding — Pre-shredding polypropylene woven sacks, FIBC bulk bags (jumbo bags), and raffia waste into manageable strips.
Waste Tire Pre-Crushing — Coarse shredding of passenger car and light truck tires before downstream crumb rubber processing or pyrolysis.
Textile & Fabric Waste — Shredding garment offcuts, carpet waste, clothing rejects, and non-woven fabric scrap for fiber recovery.
Leather & Synthetic Leather Scrap — Reducing leather trimmings, shoe manufacturing waste, and synthetic leather offcuts.
Paper & Cardboard — Bulk shredding of cardboard boxes, paper rolls, and book/magazine waste for pulping.
Wood Offcuts & Pallets — Shredding wood trim pieces, pallet blocks, MDF offcuts, and sawmill waste into chips for biomass or particleboard production.
General Waste Plastics — Mixed rigid and semi-rigid plastic scrap that falls into the soft-to-medium hardness range.
The shredding operation follows a continuous, automated workflow:
Material Loading — Raw material is loaded into the hopper via conveyor, grab crane, or forklift. The large feed mouth accommodates bulky items without pre-cutting.
Hydraulic Ram Feed — The reciprocating hydraulic ram pushes material from the hopper into the cutting chamber. The ram's stroke and speed are adjustable via the HMI to match material density and desired throughput.
Rotor Shear Shredding — The main shaft rotor spins at low speed with high torque. Moving knives mounted on the rotor pass between the upper and lower fixed knives, shearing material into progressively smaller pieces.
Screen Classification — Shredded material falls through the bottom screen when it reaches the target aperture size. Oversized particles remain in the chamber for further cutting.
Discharge — Sized output exits through the discharge chute and can be conveyed to downstream equipment (granulator, washing tank, pulverizer) by belt or screw conveyor.
Overload Auto-Reverse — If an unshreddable object enters the chamber and motor current spikes, the PLC triggers automatic reverse rotation. The rotor reverses briefly, ejecting the obstruction, then resumes normal forward operation.
Single-shaft shredders excel with soft, pliable materials (films, fibers, textiles) that a dual-shaft shredder may wrap around or fail to grip effectively. The hydraulic ram in a single-shaft machine ensures positive material feed regardless of material density or elasticity, while dual-shaft machines rely on cutter hook-and-grab geometry. For pure soft-material lines — PE film, PP bags, textile waste — single-shaft is the correct first-stage solution. Dual-shaft shredders are better suited for mixed rigid waste, bulky hollow items, and materials requiring high throughput with less emphasis on particle size uniformity. If your feedstock is exclusively soft material, the XB-L series single-shaft design will yield more consistent output and lower maintenance.
The hydraulic ram is the core throughput-determining component. It compresses and advances material against the rotor at a controlled rate — faster ram speed increases throughput but raises motor load, while slower speed improves cutting consistency. The ram system requires: (a) monthly hydraulic oil level and filter checks, (b) quarterly inspection of cylinder rod seals for leakage, (c) annual hydraulic oil analysis and replacement if contamination is detected, and (d) periodic ram face wear-plate inspection — the leading edge of the ram face experiences the most abrasion and benefits from scheduled weld-overlay or replacement before knife clearance is affected.
The PLC continuously monitors the main motor's real-time current draw. When current exceeds a configurable threshold (typically set at 110–130% of rated full-load current), the system interprets this as a jam or unshreddable object. The PLC immediately commands the rotor to stop, reverses rotation for a preset duration (typically 2–5 seconds), and then resumes forward rotation. This cycle repeats up to a programmable retry count (usually 3 attempts). If the overload persists after all retries, the system halts and triggers an alarm on the HMI. This dual-layer protection — mechanical shear pins plus electronic auto-reverse — prevents catastrophic knife damage, gearbox shock loading, and motor burnout.
Soft materials — particularly films and fibers — have a strong tendency to wrap around a rotating shaft when only a single fixed knife is present. The XB-L's dual fixed knife layout (top + bottom) creates two cutting interfaces per revolution. The upper fixed knife shears material on the downward rotor stroke, while the bottom fixed knife catches any material that survived the first cut and might otherwise begin wrapping. This symmetric cutting geometry ensures material is intercepted and cut from both sides of the shaft circumference. The result is near-zero shaft wrapping, smaller average particle size, reduced downtime for manual de-wrapping, and a lower probability of shaft-bearing overload due to unbalanced wrapped mass.
Moving knives are manufactured from high-grade alloy tool steel, heat-treated to HRC 56–60 for an optimal balance of edge retention and impact toughness. In typical PE film shredding at 20 hours/day operation: (a) knives should be rotated (4 usable edges per knife) every 80–120 operating hours, (b) re-sharpening is recommended after all 4 edges have been used — approximately every 320–480 hours, (c) a complete knife set replacement is typically needed after 3–4 sharpening cycles (around 1,200–1,800 hours). For abrasive materials such as glass-fiber-reinforced plastics or heavily contaminated waste, reduce intervals by 30–50%. Hard-facing or tungsten carbide inlays are available as a factory option for extreme abrasion applications.
Chenxing Machinery is a well-established manufacturer of plastic processing and recycling equipment based in Zhangjiagang, Jiangsu Province, China. With years of engineering experience and a growing global customer base, we offer a complete product ecosystem that covers shredding, crushing, pulverizing, extrusion, and full recycling lines.
The XB-L Single Shaft Shredder is part of a comprehensive equipment portfolio designed to work seamlessly together:
Shredding & Size Reduction: The Single Shaft Shredder feeds directly into our SMF Series Disc Grinding Pulverizer or SMP Series Knives Pulverizer for fine powder production.
Crushing: After coarse shredding, our NSPC Series Crusher provides secondary size reduction.
Extrusion: Shredded and crushed material is fed into our Conical Twin Screw Extruder or Single Screw Extruder for pelletizing.
Pelletizing & Recycling Lines: Complete systems including our Water Strand Pelletizing Line and Water-Ring Cutting Waste Plastic Recycling & Granulating Line provide end-to-end recycling solutions.
Profile & Board Extrusion: Downstream applications are supported by our PVC/WPC Profile Extrusion Line, PPR/PPH High-Speed Pipe Production Line, and PVC/WPC Celuka Foam Board Sheet Extrusion Line.
Auxiliary Equipment: All shredding and recycling lines are supported by our full range of auxiliary equipment including chillers, loaders, vibrating screens, dust collectors, and more.
We design and manufacture our shredders with a focus on three engineering principles verified through field operation: reliability under continuous duty, maintainability through accessible component layout, and adaptability through modular configuration options. Our About Us page provides further detail on our factory, team, and quality management system.
Our technical team has extensive experience across multiple application scenarios — from standard post-industrial film recycling to challenging mixed-waste processing lines. We provide pre-sales application engineering support to help match the correct shredder model to your specific material, throughput target, and downstream process requirements.
Stay informed through our Company News page for product updates, exhibition schedules, and case studies. For direct inquiries, our English-speaking sales team is available to discuss your project requirements, arrange factory visits, and provide detailed quotations.
Describe Your Material — Tell us what you need to shred: material type, form (film woven bags tires / textiles), approximate dimensions, and any contamination (dirt, metal, moisture).
Define Your Requirements — Specify target throughput (kg/h) and desired output particle size. If you have downstream equipment, share its inlet requirements for optimal matching.
Receive Our Proposal — We will recommend the optimal XB-L model, provide a detailed quotation, and share machine drawings and layout suggestions.
Confirm & Produce — Upon order confirmation, we manufacture your shredder, conduct factory acceptance testing (FAT), and arrange shipping to your destination.
Contact Information:
Email: ceo@cxsljx.com
Phone / WhatsApp: +86 15951187228 (Nicole)
Company: Zhangjiagang Chenxing Machinery Co., Ltd.
Website: https://www.chenxingmachinery.com/
