From old to new
A second life for your extruder barrel

Extruder barrels generally have a long service life, but internal wear eventually necessitates replacement. For full-body barrels, this means the entire housing must be replaced, even if the outer casing and cooling are still in excellent condition.

SPS | Solids Process Solutions, in partnership with Extruder Experts, offers an innovative revision process for worn extruder barrels in co-rotating twin-screw extruders.

40% Cost Savings
This revision method delivers up to 40% cost savings compared to purchasing a completely new barrel and supports a more sustainable operation by giving high-quality machine components a second life instead of discarding them.

The revision process includes the following steps:

1. Inspection of the used extruder barrel
   The process begins with a thorough inspection to determine the extent of wear and assess the cooling channels.
2. Sandblasting and removal of the liner
   The worn liner is removed with a hydraulic press, and the barrel is sandblasted to clear old coatings and contaminants, creating a clean base for the new liner.
3. Production of the new liner
   A new liner, custom-made from wear-resistant special steel, is then manufactured to exact specifications.
4. Insertion of the new liner
   In the heated barrel, the cooled new liner is carefully and precisely inserted to ensure optimal fit and functionality.
5. Grinding the liner
   Finally, the barrel is ground to achieve a smooth surface, giving the entire unit a renewed, “like-new” appearance.

Would you like to find out if your extruder barrels can undergo revision? Contact SPS | Solids Process Solutions. Contact us. We are happy to help you find the most sustainable solution to keep your extrusion process up-to-date.