Rubber Screw Barrel

Heavy-duty screw barrel designed for rubber extrusion and vulcanization processes. Heat-resistant materials, high torque, stable output for EPDM, silicone, and natural rubber.

Product Overview

Vanwell rubber screw barrels are engineered for the demanding requirements of rubber extrusion and vulcanization processes. Built with heat-resistant alloys and specialized flight geometry, our rubber screws handle the high viscosity and abrasive nature of uncured rubber compounds.


The screw design features a deep feed section for effective feeding of rubber batches, followed by a compression zone that ensures thorough plasticization and uniform vulcanization. Bimetal barrel linings and surface-hardened screws provide extended wear life even with highly filled rubber compounds containing carbon black, silica, or other reinforcements.

Technical Specifications

Screw DiameterØ40mm – Ø200mm
L/D Ratio8:1 to 16:1
Material38CrMoAlA / Heat-Resistant Alloy
Surface TreatmentNitriding / Plasma Nitriding
HardnessHRC 60-68
Compression Ratio1.2:1 – 1.8:1
Temperature RangeUp to 400°C
ApplicationsEPDM, Silicone, NR, SBR

Key Features

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Heat-Resistant Materials

High-temperature resistant steel alloy for stable performance during vulcanization.

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High Torque Design

Robust screw shaft and deep flight design handle high viscosity rubber compounds.

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Wear Resistant

Plasma nitriding surface treatment for extended life with carbon-black filled rubber.

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Uniform Extrusion

Precisely machined flights ensure consistent rubber profile extrusion quality.

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Bimetal Barrel Lining

Wear-resistant barrel liner handles abrasive fillers and high-hardness compounds.

Efficient Feeding

Large volume feed section for continuous rubber batch feeding without bridging.

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Universal Compatibility

Fits standard rubber extruders from small laboratory to large industrial production.

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High Temp Resistance

Stable performance at vulcanization temperatures up to 400°C.

Applications

EPDM Weather Strips
Silicone Rubber Extrusion
Automotive Seals & Gaskets
Natural Rubber Bands
EPDM Roof Membranes
Rubber Hose Extrusion
SBR Conveyor Belts
Rubber Tile Production
Medical Grade Silicone

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