Extruder Shafts are essential transmission components designed for high-torque, high-precision twin-screw extrusion systems. With diameters ranging from φ10 mm to φ120 mm and lengths of up to 15 meters, these shafts ensure reliable torque transmission and synchronization between co-rotating or counter-rotating screw elements, maintaining stable extrusion performance even under extreme working conditions.
Our shafts are fully compatible with leading extruder brands, including Coperion, Leistritz, KraussMaffei, JSW, Toshiba, Baker Perkins, SM Platek, Wenger, Clextral, Bühler, BUSS, and more.
Each extruder shaft is manufactured from High-Torque Alloy Steel with a torque capacity of up to 18 Nm/cm². The alloy composition and heat treatment process provide exceptional wear resistance, corrosion resistance, and durability, making them suitable for continuous operation in demanding environments such as plastics compounding, chemical extrusion, and polymer processing.
Spline Types
Available spline and connection standards include:
DIN 5480 Involute Splines
JIS-B-1603 Splines
GB3478 Splines
Hexagonal Keys
Flat Keyway & Semi-Circular Keys
Rectangular Splines
This wide compatibility ensures seamless installation across various extruder models and torque transmission systems.
1. Milling Shaft Technology
The milling shaft manufacturing process is based on precision metal cutting. Through high-accuracy machining, alloy billets are transformed into shafts with exact spline geometries.
Core Technical Advantages:
Continuity of Metal Fibers: Maintains the internal fiber flow of the material, improving tooth fatigue life by over 30% compared with traditional cutting.
High Flexibility: Milling cutters and programs can be quickly adjusted for different spline types, ideal for multi-model, small-batch customization.
Cost Efficiency: Requires lower equipment investment and shorter setup cycles compared to cold rolling or forging, reducing cost by 20–30%.
2. Cold-Rolled Shaft Technology
The cold-rolling process utilizes metal plastic deformation principles, forming the shaft body and spline profile simultaneously without cutting.
Functional Advantages:
Superior Strength: Cold rolling induces surface work hardening, increasing hardness by 15–25%, torsional strength by 20–30%, and extending fatigue life by over 50%.
High Precision: Controlled forming via dies achieves tight dimensional tolerance and smooth surface finish, improving assembly accuracy and transmission efficiency.
Material Efficiency: Material utilization exceeds 90%, compared with 60–70% in traditional machining, and processing time is reduced by up to 60%.
Structural Integrity: The integrated forming avoids weld stress concentration, ensuring high rigidity and resistance to impact loads.
Adaptability: After treatments like nitriding or chrome plating, shafts gain enhanced corrosion resistance, enabling stable operation in humid or abrasive environments.
Twin-Screw Extruders: Ensures synchronized torque transmission between screws for stable melt pressure and output.
Plastic Compounding & Pelletizing Lines: Ideal for high-torque and continuous-duty extrusion.
Machinery & Automation Equipment: Suitable for use in high-speed, vibration-prone drive systems requiring precision alignment and wear resistance.
Industrial Power Transmission: Reliable performance under high mechanical loads in chemical and materials processing facilities.
High-Torque Alloy Steel Construction: Provides world-class mechanical reliability under heavy-duty extrusion operations.
Dual Manufacturing Options: Both milling and cold-rolling shafts available to meet different cost-performance needs.
Customizable Spline Standards: Fully compatible with multiple international specifications (DIN, JIS, GB).
Precision & Longevity: Optimized structure, surface treatment, and inspection ensure long service life and consistent quality.
