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/ Technical Services / Spare & Wear Parts / Extrusion Line Parts / Screws for Extrusion Lines

Screws for Extrusion Lines Precision-Engineered for Wire & Cable Insulation and Jacketing Processes

Designed for continuous and high-output extrusion processes
Available in single-screw and twin-screw configurations
Barrier, mixing, and vented screw geometries available
Compatible with PE, XLPE, PVC, PP, TPE, and LSZH compounds
Manufactured to tight dimensional tolerances for consistent melt quality
Surface treatments available: nitriding, bimetallic, and hard chrome
Full range of L/D ratios to match line speed and compound requirements
Custom geometries available based on OEM drawings or worn part samples

Primary insulation extrusion for power cables
Jacketing and sheathing lines for multi-core cables
Cross-linking (XLPE) extrusion lines
Fire-resistant and LSZH compound processing
Automotive wire insulation lines
Telecommunications and data cable production
Medium and high voltage cable manufacturing
Co-extrusion and tandem extrusion setups

We help identify the right screw based on your line specifications, compound type, and output requirements. Support includes geometry matching from OEM drawings or worn samples, cross-referencing with original part numbers, and technical review of L/D ratio, compression ratio, and flight depth — so you get a replacement that performs from day one.

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We supply extrusion screws for wire and cable production lines, covering a wide range of designs and configurations used in insulation, jacketing, sheathing, and XLPE cross-linking applications. Our catalog includes replacements compatible with equipment from leading manufacturers such as Maillefer, Troester, Nokia Maillefer, Davis-Standard, Berstorff, and Rosendahl, among others.

Extrusion screws are one of the most critical wear parts in any cable extrusion line. Over time, screw flights wear due to abrasive compounds, high processing temperatures, and mechanical stress — directly affecting melt quality, output consistency, and dimensional accuracy of the insulated or jacketed conductor. Replacing worn screws promptly is essential to maintain production yield and product compliance with IEC, UL, and other international standards.

We offer single-screw and twin-screw designs in a full range of diameters, L/D ratios, and geometries — including barrier screws, mixing screws, vented screws, and general-purpose screws. These are suitable for processing PE, XLPE, PVC, PP, TPE, LSZH, and halogen-free flame-retardant (HFFR) compounds used across power cable, automotive wire, data cable, and telecom cable manufacturing.

Surface treatment options include nitriding, bimetallic overlay (with wear-resistant alloys), and hard chrome plating, depending on the compound abrasiveness and processing temperature. All screws are produced to tight dimensional tolerances and can be matched from OEM drawings, worn part samples, or original part numbers — ensuring a direct fit without line modifications.