Low Speed Plastic Crusher 2026: Quiet, High-Torque Shredding for Inline Recycling

What Is a Low Speed Plastic Crusher?

A low speed plastic crusher (also called a slow speed shredder) uses low RPM rotating blades to shred plastic materials into small particles or flakes. Unlike high-speed crushers that generate heat and noise, low speed crushers operate at 10-30 RPM, producing minimal dust, low noise, and minimal foreign matter contamination.

Low speed crushers are designed for inline recycling -- crushing plastic materials directly on the production line without removing them from the facility. This makes them ideal for plastic recycling centers, injection molding plants, and extrusion lines.

Low Speed vs. High Speed Plastic Crusher

ZILLION Low Speed Crusher Series

ZILLION offers two series of low speed crushers:

• ZL-MS Series: Compact low speed crushers for small-to-medium throughput (1.1-3.7kW, 15-50kg/h)
• AMG Series: Heavy duty low speed crushers for medium throughput (2.2-3.7kW, 50-200kg/h)

ZL-MS Series Specifications

AMG Series Specifications

Key Applications

1. Inline Recycling on Production Lines

Low speed crushers can be placed directly beside injection molding machines or extrusion lines to crush runner systems, sprues, and rejected parts immediately. The crushed material falls directly back into the production cycle, reducing material waste and transportation costs.

2. Bottle and Container Recycling

PET bottles, HDPE containers, and other hollow plastic products are ideal for low speed crushing. The slow rotation prevents shattering and produces uniform flakes suitable for re-extrusion.

3. Film and Sheet Recycling

Low speed crushing is gentler on plastic films and sheets, reducing fines generation and preserving material quality for recycling.

4. Electronic Waste Processing

Low speed crushers are used to pre-shred electronic plastic components before fine grinding, reducing operator exposure to hazardous materials.

How to Choose the Right Low Speed Crusher

Step 1: Identify Your Material Type

Different plastic materials have different crushing characteristics. Common materials include PET, HDPE, PP, ABS, and PVC. Each requires specific blade configurations and motor power.

Step 2: Determine Throughput Requirements

Calculate your required capacity based on production rate, percentage of waste material generated, and number of machines served.

Step 3: Check Available Space and Power

Low speed crushers require floor space, electrical supply matching motor power (220V single phase for small models, 380V three phase for large models), and a collection bin or conveyor below the discharge port.

Noise Reduction and Safety Features

Modern low speed crushers incorporate sound-dampening housing (75-85 dB), safety interlocks, overload protection, emergency stop buttons, and jam clearing mechanisms.

Maintenance and Blade Care

Regular maintenance includes monthly blade inspection, lubrication every 3-6 months, screen replacement when needed, and quarterly belt tension checks.

Frequently Asked Questions

Q: What is the difference between a low speed crusher and a granulator?
A: The terms are often used interchangeably. "Granulator" typically refers to machines for producing small granules (2-10mm), while "crusher" or "shredder" covers a broader range from coarse shredding to fine granulation.

Q: Can a low speed crusher handle metal-contaminated plastic?
A: Standard low speed crushers are not designed for metal contamination. Install a metal separator upstream for materials that may contain metal contaminants.

Q: How small can a low speed crusher shred plastic?
A: Screen size determines final particle size. Standard screens range from 6mm to 12mm. For finer particles (3-6mm), a secondary high-speed granulator may be needed.

Q: Do low speed crushers need to be anchored to the floor?
A: Small benchtop models (ZL-MS01 to ZL-MS03) are portable. Larger floor-standing models (ZL-MS05, AMG series) should be anchored to a concrete floor using anchor bolts.

Summary

Low speed plastic crushers offer significant advantages over high-speed crushers for inline recycling applications: lower noise, minimal heat generation, uniform particle size, and lower maintenance costs.

Key selection criteria: match capacity to your production line waste generation rate, verify material compatibility, check electrical requirements, confirm space allocation, and specify noise requirements.

ZILLION low speed crushers cover 15-200 kg/h with motor power from 1.1kW to 3.7kW. Contact ZILLION for custom configurations.

Contact ZILLION: leika@gdzillion.cn | +86 185 205 32504