 |
| Quantity: | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Product Description
The SJ Series Single Screw Extruder is one of the core machines in modern 3D filament extrusion lines. Designed for stable plasticizing, accurate material conveying, and continuous extrusion, this machine plays a critical role in manufacturing high-quality 3D printing filaments such as PLA, ABS, PETG, TPU, and other engineering plastics.
At Chenxing Machinery, we manufacture industrial-grade single screw extruders optimized for high-precision filament production. With decades of experience in plastic extrusion machinery, our SJ series extruders are widely used by global filament manufacturers seeking stable diameter control, efficient melting performance, and long-term production reliability.
In a 3D filament production line, extrusion precision directly affects:
Filament diameter consistency
Surface smoothness
Printing stability
Feeding performance in 3D printers
Final print quality
The single screw extruder is responsible for:
Melting raw plastic materials
Homogeneous mixing
Stable pressure generation
Continuous extrusion output
A high-quality extruder ensures that the filament maintains precise tolerances such as:
1.75mm filament
2.85mm filament
3.00mm filament
which are essential for modern 3D printing applications.
The SJ series extruder is widely used for producing:
PLA filament
ABS filament
PETG filament
TPU filament
Nylon filament
Carbon fiber reinforced filament
In addition to 3D filament production, the machine can also process:
PE pipes
PP sheets
ABS profiles
PET sheets
Plastic films
Plastic granules
Its versatile extrusion capability makes it suitable for both filament manufacturers and general plastic processing industries.
The extrusion process begins when plastic raw materials enter the hopper.
Inside the machine:
The rotating screw conveys material forward.
Barrel heaters gradually melt the plastic resin.
The screw compresses and homogenizes the molten material.
Stable melt pressure is generated.
Melted plastic exits through the extrusion die.
The filament enters cooling, diameter control, and winding systems.
The stable plasticizing performance of the SJ extruder directly determines filament quality and production efficiency.
Optimized screw geometry ensures efficient melting and uniform material mixing.
Suitable for PLA, ABS, PETG, TPU, PE, PP, PS, and other thermoplastic materials.
Advanced barrel heating design improves thermal efficiency while reducing energy consumption.
High-quality alloy steel components provide excellent wear resistance and long service life.
Integrated control systems allow precise temperature regulation and stable machine operation.
Multiple machine models are available for different filament extrusion capacities and factory requirements.
| Model | Screw Diameter (mm) | L/D Ratio | Main Motor Power (KW) | Barrel Heating Power (KW) | Screw Speed (RPM) | Output Capacity (KG/H) |
|---|---|---|---|---|---|---|
| SJ-30 | 30 | 25-30 | 5.5 | 3 | 140 | 30 |
| SJ-45 | 45 | 25-30 | 11 | 6 | 120 | 50 |
| SJ-55 | 55 | 25-30 | 15 | 9 | 100 | 70 |
| SJ-65 | 65 | 25-30 | 30 | 12 | 90 | 80 |
| SJ-75 | 75 | 25-30 | 45 | 18 | 85 | 100 |
| SJ-90 | 90 | 25-30 | 55 | 30 | 75 | 130 |
| SJ-100 | 100 | 25-30 | 75 | 36 | 70 | 160 |
| SJ-120 | 120 | 25-30 | 90 | 42 | 60 | 200 |
| SJ-150 | 150 | 25-30 | 132 | 56 | 60 | 300 |
Stable extrusion pressure improves filament roundness and diameter consistency.
Uniform plasticization creates smooth filament surfaces suitable for high-speed printing.
Designed for long-term stable operation in industrial filament manufacturing plants.
Accurate extrusion minimizes off-spec filament and raw material loss.
Can be integrated with:
Vacuum feeders
Drying systems
Laser diameter gauges
Water cooling tanks
Haul-off units
Automatic spool winders
Chenxing Machinery has more than 20 years of experience in plastic extrusion machinery manufacturing.
We provide complete 3D filament extrusion line solutions based on:
Raw material type
Filament diameter
Capacity requirements
Factory layout
Automation level
Our team provides:
Machine installation guidance
Process optimization support
Operator training
After-sales technical service
Every extruder undergoes comprehensive testing before shipment to ensure reliable industrial performance.
The machine can process PLA, ABS, PETG, TPU, Nylon, and other thermoplastic materials used in 3D printing filament manufacturing.
The extrusion line can produce standard filament sizes including 1.75mm, 2.85mm, and 3.00mm.
Yes. Chenxing Machinery can customize screw design, motor configuration, and extrusion capacity according to customer production requirements.
Absolutely. The SJ series extruder is designed for stable 24-hour industrial operation.
Yes. The extruder can be integrated with drying systems, cooling tanks, laser gauges, haul-off machines, and spool winding systems.
Looking for a reliable single screw extruder manufacturer for your 3D filament production project?
Chenxing Machinery provides high-performance extrusion solutions designed for precision filament manufacturing worldwide.
Visit Chenxing Machinery Official Website to learn more about our extrusion equipment and complete 3D filament extrusion line solutions.
