Injection Molding Screw Barrel Wear: When to Replace

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September 26, 2026

Injection molding screw barrel wear can directly affect plasticizing quality, shot stability and production efficiency. Excessive clearance between the screw and barrel may cause material backflow, longer recovery time and unstable product weight.

Common signs of injection molding screw barrel wear include reduced output, black spots, poor melting and increased energy consumption.

Juyuan manufactures customized replacement screw and barrel sets for injection molding machines. Nitrided and bimetallic solutions are available according to resin type and wear conditions.

Need a new screw barrel? Send us your machine brand, model, screw diameter or drawing for a quotation.

WhatsApp: +86 13905808474
Email: cxj.job@gmail.com
Website: juyuan-machinery.com