Planetary screw barrel for plasticised PVC cable compound preparation. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Cable compounds must disperse stabiliser and plasticiser evenly without overheating the PVC — a planetary stage does exactly this over its full bore. We build planetary sets for compound preparation feeding granulation or direct extrusion.
Tell us the compound family and duty point; we match spindle count, bore and the drive interface to your line.
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 | Ø100–250 mm typical |
|---|---|
| Design | Low-shear full-bore kneading |
| Material | Nitrided; bimetallic bore for filled compounds |
| Compounds | PVC cable, plasticised and semi-rigid |
| Duty | Compound prep, granulation feed |
| Lead time | 40–55 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 |
For heat-sensitive, heavily plasticised PVC, planetary kneading gives even dispersion at lower temperature rise; twin-screw wins on throughput. We will recommend honestly from your duty point.
Sometimes — it needs drive and height. Send your line layout and we will say whether it fits.
Rolling surfaces of spindles and the bore at the feed zone; both are renewable.
For planetary roller extruders in rigid PVC compounding and calendering.
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Central spindle with helical flights matched to the roller set.
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Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
