Single-Screw Extruder Gearbox
KAIBO’s single-screw extruder gearbox delivers robust torque transmission for plastic extrusion systems. Featuring precision-ground gears, heavy-duty housing, and advanced lubrication, it ensures stable operation for granulation, film, and sheet extrusion. ISO 9001-certified, with custom solutions and fast delivery.

Product Overview
KAIBO’s Single-Screw Extruder Gearbox, an ISO 9001-certified solution custom-engineered for single-screw extruders (granulation lines, cast film systems, and sheet extrusion machines), addresses high-load power transmission challenges with unparalleled reliability. Crafted with 18CrNiMo7-6 precision gear grinding and a ductile iron housing, this gearbox ensures 98% operational efficiency, reducing energy costs by 18% in PP/PE granulation and enabling high-speed production at 200m/min for film extrusion. As a leading single-screw extruder gearbox manufacturer, KAIBO integrates axial load-resistant design to stabilize large-diameter screws, minimizing vibration and noise (≤75dB no-load) for continuous industrial applications demanding precision and durability.
Core Advantages
- High-Strength Ductile Iron Housing: Engineered to resist deformation and corrosion, supporting heavy axial loads from single-screw extrusion.
- Precision-Ground Alloy Gears: Heat-treated 18CrNiMo7-6 gears with involute tooth profiles ensure smooth transmission and minimal wear.
- Pressurized Forced-Lubrication System: Advanced oil circulation reduces friction, enhances efficiency, and extends component life by 30%.
- Single-Screw Specific Design: Tailored to handle high axial forces, stabilizing screws up to 120mm diameter for consistent extrusion.
- Ultra-Low Noise Operation: ≤75dB (no-load at 1m) via optimized gear meshing and housing rigidity, meeting industrial noise standards.
- Rigorous Quality Testing: Each gearbox undergoes dynamic load testing, thermal cycling, and vibration analysis for 10,000+ hours of maintenance-free operation.
Application Scenarios
- PP/PE Granulation Lines: High-torque drive for single-screw pelletizers in recycling and resin production.
- High-Speed Cast Film Extrusion: Precision speed control for film thickness uniformity in packaging and agricultural films.
- ABS/PVC Sheet Extrusion: Heavy-load support for single-screw machines producing construction-grade sheets.
- Bioplastic Extrusion: Energy-efficient drives for eco-friendly material processing with variable torque needs.
- Medical Device Manufacturing: Low-noise, high-precision gearboxes for single-screw extrusion of medical-grade plastics.
Technical Specifications
Parameter | Typical Value | Notes |
---|---|---|
Input Power | 1.5–110 kW (Fully Customizable) | Suits small lab extruders to large industrial single-screw systems. |
Input Speed | ≤3500 RPM | Compatible with high-torque motors; supports variable speed drives. |
Gear Ratio | 8–60 (Customizable) | Multi-stage design for high torque at low speeds (ideal for thick sheets). |
Output Torque | 10,000–80,000 N·m (Customizable) | Powers single screws up to 150mm diameter in heavy-duty applications. |
Output Speed | 30–1200 RPM (Ratio-Dependent) | Adjusts for 20–200m/min production speeds in film and sheet extrusion. |
Mounting Method | Flange (Standard); Custom Shaft | Quick installation on standard extruders; retrofittable for non-standard setups. |
Protection Grade | IP55 (IP66 Optional) | Dust/water protection; IP66 for harsh environments like outdoor plants. |
Noise Level | ≤75 dB (No-load, 1m Distance) | Ensures operator comfort in 24/7 production facilities. |
Efficiency | ≥96% (Single-stage) | High efficiency reduces energy consumption in continuous extrusion. |
3-Step Quick Selection
- Identify Extruder Type: Specify single-screw application (granulation, film, sheet) and screw diameter.
- Share Operational Data: Provide input speed, required gear ratio, and expected output torque. Our engineers will recommend models within 24 hours.
- Request Custom Solutions: For special needs (high-temperature resistance, corrosion-proof materials, non-standard interfaces), tailored designs with 4–6 week lead times.
Ready to Revitalize Your Extruder Process? Let's Talk
🌎 Visit Our Website: https://kaiboi.com
📧 Request A Quote: info@kaiboi.com
📂 Free Download : Extruder Gearbox Selection Manual.PDF
FAQs
Q1: How to select the right single-screw extruder gearbox?
Q2: What maintenance ensures long-term reliability?
Q3: How does KAIBO’s design reduce noise?