2006
Factory in this trade since
30,000 m²
Production site
30+
Countries supplied
Ex-stock
Chinese-machine parts
We make replacement screw elements, kneading blocks, screw shafts, barrel sections and wear liners for Andritz feed, aquafeed and food extruders. Feed duty is where abrasion and corrosion arrive together, so the grade and the clearance matter more than the drawing alone.
| Platforms covered | Andritz feed, aquafeed and food extruders — confirmed from the machine nameplate |
|---|---|
| Interchangeability | Dimensionally interchangeable with OEM |
| Base material | Corrosion-resistant grade at 58–62 HRC for abrasive and salty duty; 300-series stainless for product contact |
| Verification | CMM report per batch |
| Minimum order | 1 piece |
| Documentation | EN 10204 3.1 on request |
| Lead time | 30–45 days once material is available and the geometry is confirmed, plus transit |
We do not publish an Andritz model list. Platform names and generations vary too widely for a list to be reliable, and a wrong list is worse than none — a nameplate photograph settles it in one message.
Feed extrusion is often described as food extrusion with cheaper ingredients. That is backwards. On wear parts it is the harder duty, because three mechanisms arrive at once and reinforce each other.
A pit from corrosion removes the hard case locally. The abrasive particle then has somewhere to start. That is why a feed element often fails earlier than the same element on a food line running similar tonnage.
On feed and aquafeed lines the first symptom is product, not hardware. Watch for these, in this order:
Because the machine keeps running, the honest way to catch it is measurement: flight crest against bore, at every planned shutdown, recorded. A trend line tells you when to order. A single reading at breakdown tells you nothing except that you are late.
On abrasive feed duty the liner frequently reaches its limit before the elements do. Measure both at the same shutdown, or you will replace a screw set into a bore that is already oversize.
The grade follows the recipe, not the brand. A poultry feed line and a marine aquafeed line on the same platform will not take the same steel.
| Product contact, general food duty | 300-series stainless, nitrided or through-hardened |
|---|---|
| Product contact, abrasive recipe | Corrosion-resistant grade at 58–62 HRC (bone meal, mineral premix, aquafeed) |
| Non-contact positions | Nitrided steel or tool steel as for compounding |
| Barrel bore | Polished or plated bore; nitrided, alpha-101, HIP PM or laser-clad liner |
Interchangeable means the element fits the shaft, matches the centre distance and reproduces the conveying geometry, so it can run alongside original parts on the same shaft.
From those we confirm compatibility and quote before anything is machined.
We supply for the feed, aquafeed and food extrusion platforms we have seen in service. Andritz platform names and generations vary widely, so rather than publish a list that will be wrong for half the enquiries, we confirm from the machine nameplate. Send a photograph of it with your enquiry.
Aquafeed combines three wear mechanisms that feed alone does not: high mineral and bone-meal loading, salt from marine diets, and the higher specific mechanical energy needed to reach the required density and durability. Abrasion opens the clearance, corrosion pits the surface, and the two accelerate each other.
On feed and aquafeed lines the first sign is usually product, not the machine: pellet durability drops, bulk density drifts, or the sink rate of aquafeed changes. By the time throughput falls the clearance has usually been open for a while. Measure the flight crest against the bore at each planned shutdown.
Yes. Barrel sections, wear liners and liner replacement are supplied alongside elements, kneading blocks and shafts. On abrasive feed duty the liner often reaches its limit before the elements do, so it is worth measuring both at the same shutdown.
Allow 30 to 45 days once material is available and drawings or measurements are confirmed, plus transit. Liners in a grade not held in stock can take longer, so order against a planned shutdown rather than a breakdown.
Email a photo of the machine nameplate and the worn element and we will come back with a quotation.
Request a quote