Replacement screw elements for co-rotating twin-screw compounding extruders, all major brands. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Elements are where compounding performance is actually built: conveying pitch, kneading disc offset, mixing geometry. We supply individual elements and full section kits machined to your shaft — keyed, splined or hex — in nitrided or wear-protected steel.
Built for parallel co-rotating twin-screw lines from lab to production scale. Send the shaft section drawing or a sample element and we reproduce the geometry, including worn profiles we reverse-engineer.
Quote within one business day. We reply with a matching proposal, delivery date and price — no generic catalogue PDF.
Standard range shown. Every dimension below can be changed to your machine, resin and output — custom manufacturing is our daily business.
| Diameter | Ø20–135 mm typical |
|---|---|
| Bore | Keyway / spline / hex, to shaft drawing |
| Types | Conveying, kneading (30/60/90°), mixing, ZME |
| Material | 38CrMoAlA nitrided; wear-protected option |
| Hardness | HV 900–1020 nitrided |
| Lead time | 20–35 days |
The honest answer depends on your resin, not on price. Here is how we advise customers.
| Gas Nitrided (38CrMoAlA) | Bimetallic Alloy Lining | |
|---|---|---|
| Best for | Unfilled PE, PP, PS, ABS, virgin PVC | Glass-filled, mineral-filled, recycled, corrosive |
| Surface hardness | HV 900–1020, depth 0.45–0.7 mm | Alloy layer 2–5 mm, metallurgically bonded |
| Typical service life | Baseline | 3–5× baseline on abrasive resin |
| Cost | Lower | Higher, recovered through fewer stoppages |
| Certification | MTC with heat number | MTC + hardness records, third-party on request |
Yes — reverse-engineering worn elements is routine for us. Send the sample; we measure, redraw, confirm and reproduce.
Common geometries in semi-finished steel, finished to your bore on order — typically 20–35 days.
All mainstream co-rotating twin-screw geometries; send the shaft drawing or a sample and we match it.
Conveying, kneading and mixing elements for co-rotating twin-screw compounders.
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Modular barrel segments with bimetallic lining for compounding lines.
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Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
