Barrel section housing the planetary roller system. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
The planetary barrel carries the raceways the rollers run against. Those surfaces have to be true — an out-of-round raceway loads the rollers unevenly and shortens the life of the whole set.
Precision bored and honed, with bimetallic lining available for filled formulations.
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 | Raceway geometry, honed |
|---|---|
| Material | 38CrMoAlA / bimetallic option |
| Roundness | Verified and recorded |
| Cooling | Circuits to your layout |
| Ports | To specification |
| Inspection | Raceway measurement sheet supplied |
| 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 |
Roundness and geometry are measured at several stations and recorded; the sheet ships with the barrel.
Unlined for virgin PVC; bimetallic lining for filled formulations.
If the body is sound, yes. We measure first and will say if replacement makes more sense.
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.
