Pultruded Carbon Fibre Tube (Hollow) 8mm(OD) * 6mm(ID)* 1000mm(L) (Pack of 2)

The Pultruded Carbon Fibre Tube is a high-strength, lightweight hollow composite structure manufactured through continuous pultrusion process, delivering exceptional stiffness-to-weight ratios for demanding engineering applications. Aerospace engineers, robotics developers, and precision instrumentation specialists rely on these tubes for structural frameworks, drone components, and vibration-damping assemblies where material performance directly impacts system efficiency. This product solves the critical challenge of reducing component mass while maintaining rigidity in weight-sensitive applications, eliminating the need for heavier aluminum or steel alternatives.

Product Overview

Pultruded carbon fibre tubes are manufactured through a continuous pultrusion process where carbon fibre reinforcement is drawn through a resin bath and shaped within a heated die, creating a uniform, isotropic composite structure with exceptional longitudinal strength. The 8mm outer diameter with 6mm inner diameter configuration provides a 1mm wall thickness optimized for applications requiring high bending stiffness without excessive weight penalty. The pultrusion method ensures consistent fibre alignment along the tube axis, delivering tensile strengths exceeding 600 MPa and modulus values around 50 GPa, making this geometry ideal for precision mechanical assemblies.

Each tube in this pack of two measures 1000mm in length, providing sufficient material for dual-component projects or backup inventory for prototyping cycles. The hollow design minimizes material usage while the carbon fibre matrix offers superior damping characteristics compared to isotropic materials, reducing vibration transmission in sensitive applications. The smooth inner and outer surfaces facilitate seamless integration with standard mechanical fittings, bearings, and coupling systems commonly used in robotics, optical equipment, and aerospace subassemblies.

Key Specifications

Key Features

• Exceptional strength-to-weight ratio with tensile strength exceeding 600 MPa, enabling lightweight structural designs in aerospace and robotics applications without compromising load-bearing capacity
• Continuous pultrusion manufacturing ensures uniform fibre alignment and consistent mechanical properties throughout the 1000mm length, eliminating weak points common in wrapped or wound tubes
• Superior vibration damping characteristics inherent to carbon fibre composites reduce resonance frequencies in precision instrumentation, optical mounts, and sensitive mechanical assemblies
• Smooth inner and outer surfaces facilitate precision machining, threading, and integration with standard mechanical fittings, bearings, and coupling systems without additional surface preparation
• Corrosion-resistant composite matrix eliminates oxidation concerns in marine, outdoor, and chemical environments where traditional metal tubes require protective coatings
• Thermal stability with low coefficient of thermal expansion maintains dimensional accuracy across temperature variations, critical for precision applications and calibrated instruments

Applications and Use Cases

• Drone and UAV structural frames where the 8mm diameter provides optimal stiffness for quadcopter arms and fuselage sections, reducing total system weight to extend flight duration
• Robotics joint actuators and linkage mechanisms utilizing the tube as a rigid shaft support, benefiting from carbon fibre's damping properties to reduce oscillation in multi-axis robotic arms
• Precision optical instrument mounts and telescope tube assemblies where vibration isolation and dimensional stability are critical for maintaining optical alignment and image quality
• Aerospace subassemblies including antenna supports, sensor booms, and structural reinforcement elements where weight reduction directly translates to fuel efficiency and payload capacity
• High-speed rotating spindle shafts in CNC equipment and precision machinery, leveraging the tube's high modulus and low density to achieve higher RPM capability with reduced inertial forces
• Medical device frameworks and surgical instrument handles where biocompatibility and non-magnetic properties of carbon composites are essential for MRI-compatible and sterilizable equipment

How to Use

Begin by inspecting both tubes for any surface damage or manufacturing defects upon receipt. The smooth outer surface is ready for immediate assembly without additional finishing. For applications requiring threaded connections, use a sharp cutting tool or precision saw to create clean end cuts perpendicular to the tube axis, then deburr edges with fine sandpaper to prevent fibre fraying. The 1mm wall thickness accommodates standard metric threading up to M6 with appropriate tapping tools designed for composite materials, using cutting fluid to prevent overheating and resin degradation.

For mechanical assembly, the 6mm inner diameter accommodates standard 5mm diameter shafts with minimal clearance, or 4mm shafts with room for bearing installation. Apply a light coating of epoxy adhesive or mechanical fasteners to secure components within the tube bore, avoiding excessive force that could cause internal fibre splitting. When machining or drilling, maintain moderate speeds and feed rates to prevent delamination at the composite surface. The tubes can be cut to custom lengths using a fine-toothed saw or CNC waterjet cutting system, with subsequent edge sanding to restore surface smoothness for precision fit applications.

Frequently Asked Questions

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