Are you running a KraussMaffei, Battenfeld, or Jwell extrusion line and looking for replacement conical twin-screws? Or perhaps you’re expanding your PVC production and need help choosing the most cost-effective screw system that still delivers high performance?
This article provides a side-by-side comparison of conical twin-screw systems used in major extrusion brands, and more importantly—how you can replace them without relying solely on the expensive OEMs.
🏭 Top Brands Using Conical Twin-Screw for PVC Extrusion
| Brand | Common Model | Typical Size | Applications |
|---|---|---|---|
| KraussMaffei | KMD 2/50, 2/75 | Ø65/132, Ø80/156 | Window profiles, PVC panels |
| Battenfeld-Cincinnati | TwinEX series | Ø55/110, Ø65/132 | PVC pipes, foam boards |
| AMUT | BA Series | Ø65/132, Ø80/156 | Technical profiles, WPC |
| Theysohn | TTS series | Ø63/132, Ø92/188 | Large-diameter pipes |
| Jwell | SJZ series | Ø65/132, Ø80/156 | Wide range of PVC products |
| Others (local OEMs) | Custom | Ø45–Ø105 | General PVC processing |
All of the above brands adopt conical twin-screw structures because of their high torque, low-speed operation, and compatibility with high-fill PVC formulations.
❗ Problems Customers Face with OEM Replacements
When extrusion customers come to us, they’re usually facing one or more of these problems:
- ⚠️ Long delivery times from OEMs (6–10 weeks or more)
- 💰 High spare part costs from original equipment suppliers
- 🔧 No technical support for screw geometry optimization
- 🔍 Unclear specs—especially with second-hand machines
- 📉 Low efficiency due to using wrong or worn-out screws
✅ Our Cost-Effective Replacement Solution
At Zhoushan Juyuan Machinery Co., Ltd., we manufacture custom-fit replacement conical twin-screw and barrel sets that are 100% compatible with the world’s top extrusion brands.
🔹 Supported Brands:
- KraussMaffei (Germany)
- Battenfeld-Cincinnati (Austria)
- AMUT (Italy)
- Jwell (China)
- Theysohn (Germany)
- YOUR local machine brand – just send us key dimensions or drawings
🔹 What Makes Our Screws Different:
- Material options: Nitrided 38CrMoAlA or bimetallic liner
- Screw coatings: Colmonoy or PTA-welded wear-resistant layers
- CNC-precision machining for perfect concentricity
- Custom geometry for better plastification and energy efficiency
- Quick turnaround: Standard delivery in 2–4 weeks
🔁 Sample Comparison: KraussMaffei vs Jwell Replacement Screws
| Feature | KraussMaffei KMD 2/50 | Jwell SJZ65/132 | Our Replacements |
|---|---|---|---|
| Torque Load | Medium | Medium–High | Match original spec |
| Max RPM | 38–45 | 35–50 | Adjustable |
| Output | ~250kg/h | ~280kg/h | Optimized to ~300kg/h |
| Delivery Time | 8–10 weeks | 4–6 weeks | 2–4 weeks |
| Price | $$$$ | $$ | $$ |
🧠 Don’t Know Your Screw Model? No Problem.
Many customers using second-hand machines or mixed-line setups are unsure what screw they need. Here’s what we need from you:
✅ Brand & model of extruder (if known)
✅ Basic measurements (outer diameter, L/D ratio, flight depth)
✅ Application (PVC pipe? WPC panel? CPVC?)
✅ Output expectations (kg/h or extrusion speed)
✅ Your current screw wear status (photo or data)
We will identify or redesign the ideal replacement screw and barrel set for your machine and material.
📞 Let’s Help You Save Time & Cost on Conical Twin-Screw Replacements
Stop overpaying for OEM parts or waiting months for delivery. Let us help you upgrade or replace your conical twin-screw system with the same (or better) performance at a fraction of the cost.
📌 Zhoushan Juyuan Machinery Co., Ltd.
📧 Email: cxj.job@gmail.com
🌐 Website: https://juyuan-machinery.com/
📱 WhatsApp: +85244499051
Send us your drawing or photo—we’ll do the rest. Fast delivery, expert support, and competitive pricing.