Description

Product Title:

6063-T5 Aluminium Metric Round Spacers – Precision Standoffs for CNC and Robotics

Technical Overview:

These high-precision metric aluminium spacers are engineered for mechanical assemblies requiring consistent axial clearance and rigid structural support. Primarily utilised in CNC machinery, 3D printers, and robotic gantry systems, these spacers provide the necessary offset for our V-slot linear rails, motor mounts, and PCB standoffs.

Manufactured from 6063-T5 Aluminum, they offer an excellent strength-to-weight ratio, superior corrosion resistance, and high dimensional stability under mechanical load.

Technical Specifications:

Material: 6063-T5 Aluminium (Raw Mill Finish)
Internal Diameter (ID): 5.1mm (Optimised for M5 clearance)
Outer Diameter (OD): 10.0mm
Available Lengths: 3mm, 6mm, 6.35mm (1/4″), 9mm, 10mm, 20mm, 30mm, 35mm, 40mm
Compatibility: Designed for use with M5 Screws and our V-Slot motion systems extrusions.

Key Features:

Precision Machined: Minimal axial length tolerance for repeatable assembly and precise alignment of gantry plates and wheels.
Structural Integrity: Unlike nylon or plastic alternatives, these aluminium spacers do not compress under high torque, ensuring consistent belt tension and preload.
Standardised Sizing: Lengths are specifically chosen to match standard CNC plate thicknesses and eccentric spacer offsets (e.g., 6mm and 9mm standard gantry offsets).
Larger Footprint: 10mm OD means a more stable platform.
Clearance Fits: The 5.1mm Internal Diameter (ID) provides a “Close Fit” for M5 fasteners, ensuring minimal radial play while allowing for ease of assembly in multi-bolt patterns.
Stacking Pro-Tip: While these spacers can be stacked to achieve custom lengths (e.g., 6mm + 3mm for a 9mm offset), we recommend using a single continuous spacer for high-vibration applications to minimise the number of interface surfaces.