Rubber Extruder Screw and Barrel
Screw Diameter : Φ15 – Φ500 mm
L/D Ratio: 15:1 – 55:1
Surface Roughness: Ra 0.4 μm
Linearity : 0.015 mm/m
Zhejiang Zhongyang Screw Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of rubber extruder screw and barrel in China. With abundant experience, we warmly welcome you to buy durable rubber extruder screw and barrel from our factory. All customized products are with high quality and competitive price.
Product Introduction
Our Rubber Extruder Screw and Barrel are precision-engineered for the unique challenges of rubber processing. Designed to handle high viscosity, significant heat buildup, and the curing characteristics of elastomers, this system ensures smooth, continuous extrusion of profiles, seals, and tire components with precise dimensions.
Product Description
Processing uncured rubber compounds demands specific engineering. Our system features a shorter, deeper-channel screw design (lower L/D ratio) to accommodate high volumetric throughput and minimize shear-induced heat generation, which can cause premature scorching. The screw geometry is optimized for efficient feeding of cold, sticky rubber strips or pellets and provides a gradual, controlled temperature rise through the barrel. The barrel is equipped with precise, multi-zone temperature control systems, often utilizing liquid heating and cooling, to effectively manage the exothermic reaction inherent in rubber extrusion. Special attention is given to streamlining the flow path and utilizing specialized surface treatments or coatings to prevent material hang-up and degradation. The result is a consistent, bubble-free extrudate with an excellent surface finish, ready for downstream vulcanization. This reliable performance is crucial for maintaining tight tolerances and complex cross-sectional shapes in final products like seals, gaskets, and tire treads.
Our Advantages
- Anti-Scorch Design: Lower shear profiles and precise thermal management prevent premature curing (scorching).
- High-Viscosity Handling: Deep channels and robust drive systems ensure smooth feeding and conveying of sticky rubber.
- Dedicated Thermal Management: Liquid-conditioned barrels expertly handle the exothermic nature of rubber processing.
- Precision Dimensional Control: Delivers stable extrusion for complex profiles with tight tolerances.
Technical Date
|
Screw Diameter |
Φ15 – Φ500 mm |
|
L/D Ratio |
15:1 – 55:1 |
|
Materials (Base/Liner) |
Alloy Structural Steels: |
|
Surface Roughness |
Ra 0.4 μm |
|
Linearity |
0.015 mm/m |
|
Nitrided Hardness |
HV 850 – 1000 |
|
Nitrided Depth |
0.5 – 0.8 mm |
|
Bimetal Liner Thickness |
Screw: 2 – 3 mm |
|
Bimetal Liner Hardness |
HRC 50 – 65 |
Application
Specifically used for the continuous profile extrusion of automotive, construction, and industrial seals, including door seals, window guides, O-rings, and gaskets. Also a key component in producing tire components (treads, sidewalls), rubber hoses, cable jacketing, and various solid or hollow rubber profiles.
FAQs
1.Q: Can you customize the screw design for our specific PVC formulation and product?
A: Absolutely. A key strength is our flexible customization. We can tailor the screw compression ratio, length-to-diameter (L/D) ratio, and flight design to perfectly match your specific material blend (e.g., filler content) and final product requirements, optimizing performance and quality.
2.Q: What is your experience in this field?
A: Our engineering team possesses over 20 years of specialized experience in designing and manufacturing screw and barrel systems, with deep expertise in PVC extrusion applications. This allows us to provide reliable solutions for complex processing challenges.
3.Q: Why should we choose you over other suppliers?
A: Choosing us means gaining a long-term technical partner, not just a component supplier. We combine premium materials, deep customizability, proven quality control, and responsive expert support to ensure your production's success, efficiency, and lower total cost of ownership.
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