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Injection Molding Screw Barrel: Selection, Maintenance & Troubleshooting14 2026-07

Injection Molding Screw Barrel: Selection, Maintenance & Troubleshooting

Screw Barrel for WPC Extrusion: How to Stop Wood-Plastic Wear09 2026-07

Screw Barrel for WPC Extrusion: How to Stop Wood-Plastic Wear

Screw Barrel for PVC Pipe Extrusion: How to Specify the Right One06 2026-07

Screw Barrel for PVC Pipe Extrusion: How to Specify the Right One

Extruder Screw Barrel: The Complete Guide to Types, Materials & Selection01 2026-07

Extruder Screw Barrel: The Complete Guide to Types, Materials & Selection

Conical vs Parallel Twin Screw Extruder: Which One for Your Line?29 2026-06

Conical vs Parallel Twin Screw Extruder: Which One for Your Line?

When to Replace a Worn Screw Barrel: Signs, Wear Tolerances & Repair vs Replace22 2026-06

When to Replace a Worn Screw Barrel: Signs, Wear Tolerances & Repair vs Replace

A screw barrel is worn out when the radial clearance between screw and barrel exceeds the manufacturer’s tolerance — usually signaled by falling output, surging, poor mixing, or black specks. Minor flight damage can sometimes be repaired; once the barrel bore or screw flights are worn past tolerance, replacement is the economical fix. Measure the clearance before you decide.
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