Pin-barrel set for better mixing and lower melt temperature. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Pins projecting into the channel continuously split and recombine the compound. That improves dispersion and, just as important, keeps the melt temperature down — which is what lets you run faster without scorching.
We machine the pin holes to your pattern and supply the screw with interrupted flights to match, so the pins pass cleanly through the channel.
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.
| Bore diameter | Ø45–200 mm |
|---|---|
| Design | Pin barrel + interrupted-flight screw |
| Pin layout | To your pattern and count |
| Material | 38CrMoAlA nitrided |
| Benefit | Better dispersion at lower melt temperature |
| Compounds | EPDM, SBR, NR, NBR blends |
| Lead time | 40–50 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 |
Pins mix without adding shear heat, so you get dispersion without pushing the compound towards scorch.
Not practically — a pin barrel is a different design. A replacement set is the route.
It depends on compound and output. Tell us both and we specify the layout.
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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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.
