by kanziye@gmail.com
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Gearboxes for Plastic Pelletizing and Recycling Lines – High Torque Solutions for Continuous Processing
Modern plastic recycling and pelletizing systems require gearboxes that can handle constant torque, high temperature, and abrasive material wear. Whether in extrusion pelletizing, strand cutting, or underwater pelletizing systems, the gearbox is a critical component for driving performance and product consistency.
At KNGEAR, we manufacture custom gearboxes engineered specifically for plastic pelletizing lines and recycling machinery, delivering long-term stability and efficiency.
♻️ Common Gearbox Applications in Plastic Recycling
| Equipment | Gearbox Function |
|---|---|
| Single- / Twin-screw Extruder | Drive high-viscosity melt at low RPM |
| Strand Pelletizer | Cut and feed plastic strands |
| Underwater Pelletizer | Control rotor and cutting chamber |
| Melt Pump / Gear Pump | Regulate pressure and flow to die |
| Compounding Extrusion Line | Power multiple synchronized elements |
⚙️ Gearbox Features for Pelletizing Lines
- High torque output (often 20,000–120,000 Nm)
- Oil-cooled designs for continuous operation under high temperature
- Hardened & ground gear sets (DIN 6 class accuracy)
- Thrust bearing support for screw pressure
- Dual output shafts for twin-screw systems
- Compact housings for modular integration into skid-mounted lines
🧩 Gearbox Models Used in Pelletizing and Recycling
KNGEAR offers both standard and customized gearbox solutions for extrusion and recycling lines. Among the most widely used series are:
- ZLYJ Series Gearboxes – High-precision, single-screw extruder gearboxes with integrated thrust bearings. Suitable for PVC, PE, and PP granulation.
- KLYJ Series Gearboxes – Designed for twin-screw extruder systems. Dual-output shafts ensure perfect synchronization for high-throughput plastic compounding and pelletizing.
Both series are available with optional oil cooling, flange mounting, and reinforced housings for recycled plastic processing.
🛠️ Engineering Customization by KNGEAR
- Compatible with extruder frame and motor layout
- Support for vertical or horizontal installation
- Carburized alloy steel gears for long service life
- Optional integration with melt pressure sensors or oil conditioning systems
- Special coatings for handling recycled plastic impurities
✅ Why KNGEAR for Plastic Recycling Drives
- Over 15 years of experience in plastic machinery applications
- Customized gearboxes for Chinese and international pelletizer brands
- Full control over design, gear cutting, and inspection
- Fast technical support and OEM drop-in replacement capability
- Delivered worldwide with CE-ready documentation
📧 Looking for a reliable gearbox partner for your plastic line?
Contact us today with your drawings or performance requirements — we’ll build a gearbox that performs 24/7.
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