Rubber screw barrel for continuous vulcanisation (CV) and cable jacket lines. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Cable jacket compounds — XLPE, EPR, hypalon-style — need a shear profile that wets the conductor without overheating the insulation. Our cable screws run a gentle compression curve with polished channels for clean strippable or bonded jackets.
Built for CV lines and standard jacketing extruders. Tell us the compound, conductor size and line speed and we size the screw and barrel zones.
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.
| Screw diameter | Ø50–150 mm |
|---|---|
| Design | Gentle compression for insulation-safe shear |
| L/D ratio | 12–20 depending on CV / jacket duty |
| Material | 38CrMoAlA nitrided, polished |
| Compounds | XLPE, EPR, neoprene-class, EPDM |
| Lead time | 30–45 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 — send the extruder model and head pressure; CV duty needs a screw that holds pressure flat at high head, which our cable profile is built for.
Indirectly, through shear heat: over-sheared compounds change surface chemistry and adhesion. A gentle profile keeps the jacket consistent.
Both — we measure your barrel bore first and advise honestly whether the barrel can stay.
For hot-feed rubber extruders — hose, profiles and cable covering.
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Cold-feed barrel with temperature-control jacket options.
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Pin-barrel set for better mixing and lower melt temperature.
View Details →Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
