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Servo SJ65/33 Single-Screw Extruder
A high-efficiency, servo-driven single-screw extruder engineered for stable output, precise temperature control, and flexible formulation processing. Ideal for compounding, masterbatch, and small-batch granulation workflows, with seamless integration into pilot-scale granulation lines and R&D environments.
Servo SJ65/33 Single-Screw Extruder
Product Highlights
Precision Servo Drive and Stable Throughput
The SJ65/33 adopts a high-torque servo motor with vector control, delivering rapid start/stop response, low RPM ripple, and excellent melt stability. Closed-loop speed and pressure control ensure consistent output and superior granule quality across a wide range of recipes.
Optimized 33:1 L/D Screw Design
A proven barrier/mixing screw profile provides efficient melting, homogenization, and devolatilization. Optional mixing elements, shear-reducing sections, and wear-resistant bimetallic liners support abrasive fillers and high mineral loadings without sacrificing output.
Advanced Materials and Hygienic Build
Product-contact parts use nitrided or bimetallic barrels and high-wear screw metallurgy (38CrMoAlA, W6Mo5Cr4V2 options). Surface finishes minimize material hang-up and enable quick color change. Seals and gaskets are heat-resistant for stable operation with engineering polymers.
Smart Process Control and PAT-Ready
HMI/PLC with multi-zone barrel temperature control, melt pressure/temperature trending, and recipe management. Optional PAT integrations—inline moisture (NIR), torque/pressure analytics, and gravimetric feeder synchronization—enable data-driven optimization and QbD-aligned scale-up in pilot granulation lines.
Energy-Efficient, Low Noise, Compact Footprint
Servo drive plus VFD-controlled auxiliaries reduce energy consumption by 10–20% versus conventional induction systems. The compact, skid-friendly layout fits labs, pilot plants, and small-batch production cells while maintaining industrial reliability.
Seamless Upstream/Downstream Integration
Compatible with lab-scale granulation equipment and pilot-scale granulation lines: supports side feeders, liquid dosing, strand or water-ring pelletizers, air knives, and inline classifiers. Recipe portability simplifies transition from R&D to small-batch manufacturing.
Application Areas
Building and Construction
- PVC/PE/PP profiles, sealants, cable compounds, flame-retardant masterbatches, cement/plaster additives granulation.
Furniture and Wood Composites
- WPC masterbatch, color and UV stabilizer concentrates, scratch-resistant additives for decorative panels and edges.
Automotive and E-Mobility
- PP/PA/ABS/TPE compounding, lightweight fillers, conductive and antistatic blends, battery-pack accessory materials.
Appliances and Consumer Goods
- Color masterbatches, impact modifiers, odor/VOC-reduction formulations for housings and functional parts.
Specialty Chemicals and Additives
- Mineral-filled granules, desiccant masterbatch, nucleating agents, anti-block/slip additives.
Pilot-Scale R&D and Small-Batch Granulation
- Formulation screening, DoE, and process optimization with wet/dry/melt granulation compatibility and fast changeover.
Technical Specifications
Core Performance
- Screw diameter: 65 mm
- L/D ratio: 33:1
- Typical output: 120–280 kg/h (material and formulation dependent)
- Melt temperature control: multi-zone barrel with PID control, ±1.5 °C stability
- Melt pressure range: 0–25 MPa, high-precision transducer
Drive and Mechanics
- Servo motor: high-torque, energy-saving design with vector control
- Main motor power: 45–75 kW (configuration dependent)
- Gearbox: low-noise, high-torque gearbox with hardened gears
- Barrel options: nitrided steel or bimetallic liners for abrasive/high-fill systems
- Screw design: barrier + mixing sections; optional Maddock, pineapple, or blister elements
Feeding and Dosing
- Main feeder: gravimetric or volumetric
- Side feeder: twin-screw side feeder for fillers and recyclate
- Liquid dosing: 0.1–5.0 L/h for additives and plasticizers with closed-loop flow control
Process and PAT
- Sensors: melt temperature, melt pressure, motor torque, barrel zone temperatures
- PAT options: inline NIR moisture, inline particle size (downstream), torque/pressure trending
- Data and connectivity: OPC UA/Modbus TCP, CSV batch export, e-signature ready
Pelletizing and Cooling
- Strand pelletizer or water-ring pelletizer
- Air knife, water bath, or air cooling tunnel
- Inline classifier/screener for granule size control
Utilities and Energy
- Power supply: 380–480 V, 50/60 Hz, 3-phase
- Installed power: 55–95 kVA (depending on auxiliaries)
- Compressed air: 6–8 bar for cutters and valves
- Cooling water: 0.2–0.5 m³/h, 15–25 °C typical
- Energy efficiency: 10–20% lower consumption vs. non-servo equivalents
Materials and Compliance
- Contact materials: nitrided/bimetallic barrel, wear-resistant screw metallurgy
- Standards: CE marking; documentation for IQ/OQ available for regulated environments
- Safety: interlocks, over-torque and over-pressure protection, E-stop circuitry
User Recognition
Proven Market Performance
- Widely adopted by plastics compounders and R&D centers for masterbatch and additive granulation, with documented reductions in scrap and cycle time.
- Demonstrated stable throughput at low RPM for heat-sensitive polymers and precise moisture control when integrated into pilot-scale granulation lines.
Customer Feedback
- “Servo control delivered immediate torque response—color changes are faster and output is more consistent.”
- “With bimetallic barrels, CaCO3-filled PP ran 20% longer between maintenance intervals.”
- “Integration with NIR moisture and gravimetric feeders helped us hit CQAs on the first pass.”
Representative Case Studies
- Building Materials: Produced flame-retardant PP masterbatch with ±0.3% additive accuracy, reducing rework by 35%.
- Automotive: Compounded glass-filled PA with stable melt pressure, improving dimensional stability in injection-molded parts.
- R&D Scale-Up: Transferred a lab formulation to small-batch production with PAT guidance, achieving target granule size distribution without additional trials.
Why It Wins
Innovation and Competitive Edge
- Servo-driven precision, optimized 33:1 L/D screw geometry, and PAT-ready controls combine to maximize output stability and granule quality.
- Modular ecosystem compatible with lab granulation equipment and pilot granulation lines, enabling fast DoE cycles and risk-mitigated scale-up.
- Energy-efficient, compact, and compliance-ready—ideal for Google-ready product pages targeting small-batch granulator and pilot-scale granulation keywords.
