High Torque Twin Screw Core Shafts for Co-Rotating Extruders
These high torque twin screw core shafts are key transmission components specifically engineered for co-rotating parallel twin-screw extruders, designed to withstand extreme high-torque, heavy-load operating conditions. Crafted from high-strength 38CrMoAlA/SACM645 alloy steel, they undergo precision quenching, tempering, and optional ion nitriding treatments, achieving exceptional rigidity, toughness, and wear resistance—effectively preventing shaft deformation, bending, or fracture during long-term high-torque extrusion.
Optimized for high-load scenarios such as high-fill plastic modification, WPC compounding, lithium battery diaphragm production, and large-capacity extrusion, these core shafts ensure stable power transmission, precise synchronization of twin screws, and seamless compatibility with screw segments and barrel sections. They are the core guarantee for the stable operation of high-performance co-rotating twin-screw extrusion lines.
Key Specifications
| Parameter |
Detail |
| Product Type |
High Torque Twin Screw Core Shafts |
| Base Material |
38CrMoAlA / SACM645 Alloy Steel |
| Heat Treatment |
Precision Quenching & Tempering; Ion Nitriding (Optional) |
| Torque Bearing Capacity |
Customizable (Based on Extruder Model & Load Requirement) |
| Hardness |
HRC 28–32 (Core); HV 850–1000 (Nitrided Surface, Optional) |
| Applicable Equipment |
Co-Rotating Parallel Twin-Screw Extruders (Φ35–Φ150mm) |
| Applicable Scenarios |
High-Torque Extrusion, High-Fill Compounding, WPC Production, Lithium Battery Diaphragm Extrusion |
| Customization |
Customizable to match extruder model, shaft diameter, length, and connection dimensions |
Frequently Asked Questions (FAQ)
Q: Why are these core shafts suitable for high-torque extrusion?
A: Made of high-strength 38CrMoAlA/SACM645 alloy steel and treated with precision quenching & tempering, they have excellent torsional strength and toughness, which can stably bear high torque without deformation or fracture—solving the difficulty point of frequent shaft damage in heavy-load production.
Q: Can these core shafts match my existing co-rotating extruder and screw segments?
A: Yes. We customize the shaft diameter, length, connection structure (with screw segments), and installation dimensions according to your extruder model, ensuring perfect synchronization with twin screws and seamless compatibility with other components.
Q: What is the service life of these high torque core shafts?
A: Under normal high-torque operating conditions, the service life can reach 20,000+ working hours, thanks to the high-strength material and professional heat treatment, which is far longer than standard core shafts.
With precision machining, high-strength material selection, and targeted heat treatment, these high torque twin screw core shafts provide reliable power transmission for high-performance co-rotating twin-screw extrusion lines. They effectively solve the core problems of shaft deformation, fracture, and unstable operation in high-torque scenarios, reducing maintenance costs and downtime, and becoming an essential component for manufacturers pursuing high efficiency and stability.
