Xcalibur Replacement Barrel & Screw
Precision-engineered replacement assembly for the Xcalibur extruder
Overview
The Xcalibur Barrel & Screw is a precision-engineered replacement assembly for the Xcalibur extruder, designed for continuous processing of abrasive and high-performance polymer systems. Hardened wear surfaces, a deep groove thrust bearing, and tight manufacturing tolerances make it suitable for aerospace, medical, and automotive-grade material workflows where contamination control and batch repeatability are non-negotiable.
Screw Design & Engineering
Specifications
- Overall length: 400mm (300mm effective)
- Diameter: 22mm
- Flight angle: 23°
- Channel depth: 6mm progressive taper
- L/D ratio: 18:1
Three-Stage Progressive Design
Feed zone (0–130mm)
Deep channel geometry accommodates varied pellet sizes and bulk densities. Suitable for heat-sensitive materials requiring temperature-controlled intake.
Compression zone (130–200mm)
1.36:1 compression ratio with controlled shear heating for thermal management across processing transitions.
Metering zone (200–300mm)
Delivers uniform melt pressure, final homogenisation, and consistent output for dimensional stability.
Thrust Bearing Assembly
Deep groove bearing manages axial load under high back-pressure, maintaining precise screw alignment and stable output across the full processing temperature range.
Material Capability & Quality
Engineered for Abrasive & High-Performance Systems
- Carbon fibre composites — aerospace structural applications
- Metal-filled polymers — automotive thermal management
- PEEK / PEI — oil & gas downhole equipment
- Ceramic-loaded materials — marine propulsion components
Wear Resistance
Hardened screw surfaces with wear-resistant coatings handle abrasive fillers without accelerated degradation. Replaceable flight edges allow targeted maintenance rather than full assembly replacement, reducing downtime and cost.
Contamination Control
Barrel rotation capability enables rapid material changeover with complete purging between runs — essential when sequentially processing medical-grade, aerospace-specification, or incompatible polymer systems where cross-contamination cannot be tolerated.
Quality & Traceability
Precision-ground surfaces and controlled manufacturing tolerances support batch-to-batch repeatability. Full process parameter logging enables material traceability for regulatory compliance, OEM approval workflows, and quality certification across aerospace, automotive, and medical applications.
Looking for a replacement Barrel & Screw for the Noztek Pro or Touch? Click here