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 Buhler BCTM and BCTA twin-screw extruders on pasta, snack and breakfast-cereal lines. Parts are dimensionally interchangeable with the original, or made from a measured sample where no drawing survives.
| Models covered | Buhler BCTM and BCTA twin-screw extruders |
|---|---|
| Applications | Pasta, snack and breakfast-cereal lines |
| Interchangeability | Dimensionally interchangeable with OEM |
| Base material | 300-series stainless, nitrided or through-hardened; 58–62 HRC corrosion-resistant grade for abrasive recipes |
| Verification | CMM report per batch |
| Minimum order | 1 piece |
| Documentation | EN 10204 3.1 on request |
| Lead time | 30–45 days (imported-machine spares), plus transit |
The 30–45 day figure applies once material is available and drawings are confirmed. A specific surface finish or a grade not held in stock adds to that.
Wear does not spread evenly down a Buhler screw. It concentrates in two places, and which one dominates depends on whether the line is running pasta or snack and cereal.
On pasta duty the pressure-building section and the last conveying elements ahead of the die wear first, because that is where pressure peaks. The element is being asked to do work that a compounding screw never sees: build enough pressure to push a stiff, low-moisture dough through a die, continuously, without surging.
On snack and breakfast-cereal duty the kneading blocks in the cook zone wear first. Here the mechanism is different — high shear at temperature, with abrasive flour and bran in the mix, and often a mineral or vitamin premix added downstream.
Neither failure announces itself as a broken part. The line keeps running and the product drifts: pasta that no longer holds its shape at the die, cereal that needs more specific mechanical energy to reach the same cook.
Individual positions or a matched set, depending on how much of the shaft is out of tolerance. Where only two or three positions are worn, we quote those positions rather than a full screw — a full set is not automatically the cheaper answer.
Interchangeable means the element fits the shaft, matches the centre distance and reproduces the conveying geometry, so it can run alongside original Buhler parts on the same shaft. We work from OEM drawings where they are available and from measured samples where they are not.
A large share of Buhler enquiries arrive with a worn part and nothing else — no drawing, no part number, sometimes a machine the OEM has stopped supporting. That is workable. We measure the worn part, reconstruct the geometry and, where wear has changed the original profile, recover the profile from the unworn section of the same element or from its position on the shaft.
What we cannot do is guess. If the wear is severe enough that the original geometry is gone, we will ask for a section drawing, a sample, or a photograph of the same position on a sister machine.
The grade follows the duty, not the brand. A pasta line and a mineral-premix snack 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 (mineral premix, bone meal, 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 |
Each shipment includes a dimensional inspection report. On request we supply material certificates to EN 10204 3.1, hardness results and a CMM printout for the batch.
Most Buhler enquiries are answered from three things, none of which needs a drawing:
From those we confirm compatibility and quote before anything is machined.
Both. Most enquiries are for individual elements to replace the worn positions on an existing shaft. Where several zones are worn, or the shaft itself is out of tolerance, we quote a matched set. Individual pieces and full sets are made to the same dimensional standard.
Not necessarily. The two are different machine platforms, so element sizes and barrel bores may differ. Send the nameplate photograph and the element position and we will confirm which parts cross over before quoting.
In pasta duty the pressure-building section and the final conveying elements ahead of the die wear first, because that is where pressure peaks. On snack and cereal lines the kneading blocks in the cook zone wear first. Both show up as a change in product rather than as a broken part.
Yes. We measure the worn part and reconstruct the geometry, including the original profile where wear has changed it. That is routine for machines where the OEM no longer supplies the part or will not release the drawing.
A dimensional inspection report with every shipment. On request we add material certificates to EN 10204 3.1, hardness and case-depth records, and a CMM printout for the batch.
Email a photo, a drawing or the OEM part number and we will come back with a quotation.
Request a quote