JWSSG Series Pipe Crusher and shredder Unit

The JWSSG Series Pipe Crusher and Shredder Unit is engineered for the most demanding pipe recycling tasks, delivering industrial-grade shredding performance for large-diameter plastic pipes. Unlike conventional crushers, this dual-shaft, low-speed, high-torque unit handles everything from production scrap to post-consumer bulky pipes.

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Application

The JWSSG Series is widely used in pipe extrusion plants, municipal recycling centers, and industrial waste processing facilities.

In-line Extrusion Waste Shredding
A German pipe manufacturer uses a JWSSG-800 directly after its extrusion line to instantly shred rejected 800mm HDPE pipes. The combination of dual 37kW motors and a Φ1028mm rotor diameter achieves up to 1,200 kg/h throughput, feeding directly to a downstream pelletizer.

Post-Consumer Bulky Pipe Recycling
A UK recycling center uses a JWSSG-1600 to process waste 1600mm sewer pipes (PE and PP). The 2×110kW drive and Φ1968mm rotor generate tremendous inertia, easily shredding thick-wall and steel-reinforced pipes without downtime. Output reaches 2,500 kg/h, saving 60% of pre-shredding time compared to single-shaft shredders.

Material Recovery Facility (MRF)
In Australia, an MRF uses a JWSSG-1000 to reduce the volume of 1000mm PVC pipes from construction waste. The wide feed opening and aggressive rotor geometry prevent bridging even when feeding bundled materials.

Advantages

Feature	Advantage
Extra-large rotor diameters (Φ848–Φ1968mm)	Generates high flywheel inertia – cuts thick-wall and large-diameter pipes without a hydraulic ram feeder.
Dual 30–110kW drives	Provides balanced high torque at low speed. Reduces noise, dust, and thermal overload risk.
Direct feed up to 1600mm pipes	No pre-cutting required. Saves labor and energy.
Dual-shaft anti-jam design	Self-cleaning hooks prevent wrapping. Handles contaminated pipes (with sand, film labels, or light steel).
Replaceable tool steel cutters	All cutters are field-replaceable. Rotor and counter knives made of CrMoV tool steel – 8,000–10,000 hours between re-grinds.
Modular screen basket	Interchangeable screens (40–120mm) control output size. Changeover in under 5 minutes to suit downstream processes.

Process

Every JWSSG unit undergoes a 7-step verification before shipment. Our ISO 9001:2015 certified process includes:

Raw Material & Manufacturing
Rotor forgings – Ultrasonic testing per EN 10228-3 to rule out internal defects.
Welded frame – Magnetic particle inspection on all primary welds.

Assembly & Commissioning
Dynamic balancing – Each rotor (up to Φ1968mm) balanced to ISO 1940 G6.3, eliminating vibration at full load.
No-load run test – 4 hours continuous; bearing temperature rise ≤40°C (monitored by thermocouples).
Load simulation – We use actual 1600mm PE pipes (for JWSSG-1600) mixed with metal particles to verify anti-jam logic and overload protection.

Final Acceptance
Output particle size analysis – Sieve test ensures 90% of shredded material passes the selected screen size.
Sound pressure level measurement – ≤82 dB(A) at 1m (enclosed version).
Factory Acceptance Test (FAT) – Customers are invited to witness shredding of their own pipe samples.
Real example: A Canadian customer sent 12 tons of 1200mm HDPE pipes with 8% sand contamination. The JWSSG-1200 passed FAT without issues, running 6 hours continuously with bearing temperatures below 65°C and no unshreddable rejects.

Parameters

Model	Rotor Dia. (mm)	Drive Power (kW)	Shreddable Pipe Dia. Max. (mm)	Output (kg/h)
JWSSG-630	Φ848	2 × 30	630	800–1000
JWSSG-800	Φ1028	2 × 37	800	1000–1200
JWSSG-1000	Φ1258	2 × 45	1000	1200–1500
JWSSG-1200	Φ1478	2 × 55	1200	1500–2000
JWSSG-1600	Φ1968	2 × 110	1600	1800–2500

Q1: What is the maximum pipe diameter I can feed directly without pre-cutting?
A: The “max pipe diameter for shredding” equals the actual feed opening size. For the JWSSG-1600, you can feed pipes up to 1600mm OD. Larger pipes (e.g., 1800mm) require a simple guillotine pre-cut – but the rotor will still bite into flattened sections.

Q2: Can it shred pipes with light steel reinforcement (e.g., steel-PE composite pipes)?
A: Yes, for occasional steel wires ≤4mm. The two low-speed rotors (approx. 60–80 RPM) crush and tear them. For continuous steel-reinforced pipes, we recommend the JWSSG-S series with hardened wear plates.

Q3: How do I change the output size?
A: Replace the screen basket. Standard screens: 40mm, 60mm, 80mm, 120mm. For coarse output (e.g., followed by washing), use the 120mm screen. For direct feeding to an extruder, use the 40mm screen. Two operators with a simple lifting device – about 15 minutes.

Q4: What weekly maintenance is required?
A:
Check hydraulic oil level (if the unit has a hydraulic ram – optional).
Check counter knife gap (adjust to 0.5–1mm).
Listen for unusual bearing noises.|
Lubricate rotor bearings via the automatic lubricator (standard on 1200 and 1600 models).
No daily knife sharpening – tool steel blades hold their edge for hundreds of hours.

Q5: How does the JWSSG compare to a single-shaft shredder for pipe shredding?
A: Single-shaft ram-fed shredders often jam on long, soft pipes because the rotor pushes material sideways. The JWSSG’s dual-shaft design makes the two rotors intermesh, pulling pipes down evenly. This eliminates bridging and saves 30–40% energy over single-shaft on large-diameter (>800mm) materials.

Q6: Do you offer sound enclosures?
A: Yes. Optional bolt-on sound enclosures reduce noise to ≤78 dB(A) at 1m – critical for indoor installations or recycling facilities near residential areas.

Q7: Can I see a test before purchasing?
A: Absolutely. We offer free sample testing at our factory (viewable live via video or webcam). For major buyers, we arrange a Factory Acceptance Test (FAT) using your material.