For hot-feed rubber extruders — hose, profiles and cable covering. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Hot-feed rubber extrusion runs compound that has already been warmed on a mill, so the screw's job is conveyance and stable pressure, not melting. We design the channel and compression for that, with a surface finish that releases cleanly.
Built for hose, profile, cable covering and general rubber goods, nitrided for wear resistance against carbon-black-loaded compounds.
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 | Ø30–200 mm |
|---|---|
| L/D ratio | 4–12 typical for hot feed |
| Material | 38CrMoAlA nitrided |
| Feed | Hot-feed, mill-warmed compound |
| Finish | Polished, clean release |
| Options | Temperature-control jacket |
| Lead time | 30–40 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 |
Hot feed takes pre-warmed compound and has a shorter L/D. Cold feed takes room-temperature strip and needs a longer, higher-compression screw. Tell us which your line uses.
Carbon black and mineral fillers are abrasive. Nitriding gives a hard, low-friction surface that resists it.
Yes — machine model, diameter and L/D, or send the worn parts.
Cold-feed barrel with temperature-control jacket options.
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Pin-barrel set for better mixing and lower melt temperature.
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For rubber strainer machines filtering compound before calendering.
View Details →Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
