We supply custom Neodymium cube magnets with equal length, width, and height dimensions.
Commonly used in magnetic holding grids, sensor arrays, modular assemblies.
And applications where uniform geometry is required.
The manufacturing challenge with cubes is maintaining orthogonality.
That means to ensure all corners are true 90-degree angles.
Poor squareness causes gaps when cubes are stacked or aligned edge-to-edge.
This creates misalignment in grid arrays where multiple magnets must fit together precisely.
We control grinding on all six faces to ensure tight angular tolerances.
Available in sizes from 2mm to 60mm and custom magnetization directions.
The “60mm Limit” (Engineering Constraints)
Maximum Single-Piece Dimensions:
To guarantee 100% Magnetic Saturation (full strength throughout the core), the maximum size for a single monolithic cube is 60mm x 60mm x 60mm (approx. 2.36″).
Why this limit exists:
– Magnetizing a solid block larger than 60mm requires energy levels that exceed the capacity of standard industrial magnetizing coils.
– A larger block magnet will having a “soft” center that is not fully magnetized.
The Solution for Larger Cubes:
– If your project requires a cube larger than 60mm (e.g., 100mm), we supply this as a Composite Assembly.
– We bond multiple smaller blocks (e.g., four 50x50x50mm blocks) using high-strength industrial epoxy.
– This assembling method can create the larger dimension without compromising magnetic performance.
The “Orientation” Challenge
Since all sides look the same, users can get confused.
Identifying the Poles:
In a standard cube magnet, only two of the six faces are magnetic poles.
The other four are “sides.”
– The Problem: Visually, all 6 sides look identical.
– Our Solution: We offer Polarity Marking to speed up your assembly.
– Option: North Pole Dot / Dimple (Highly Recommended).
Why:
If you install one cube “sideways” in a Halbach array or holding grid, the magnetic circuit will fail.
Chamfers & Edge Condition
A perfectly sharp 90° corner on a Neodymium magnet is extremely fragile.
Standard Supply:
Our cubes come with a small Chamfer (Bevel) on all 12 edges.
The Benefit:
– Durability: Prevents corner chipping during handling.
– Plating Quality: Allows for smoother Nickel/Zinc coverage, preventing “dog-bone” buildup at the sharp points.
Surface Coatings
Ni-Cu-Ni (Nickel): The standard silver finish.
Black Epoxy: Popular for “hidden” cubes in joinery or design applications.
Gold (Au): Often used for small cubes (3mm-5mm) in magnetic desk toys or executive gifts.
Phosphated: Recommended if you plan to Over-Mold the magnet into plastic.
Safety Warning: Large Cubes
A 60mm cube is incredibly dangerous.
Handling Large Cubes (20mm – 60mm):
– Please exercise extreme caution.
– A 60mm N52 Cube has a pull force exceeding 150kg.
Crush Hazard:
– It will crush fingers instantly if it snaps to steel or another magnet.
Impact Hazard:
– If allowed to slam together, large cubes will shatter.
– It sends sharp shrapnel at high speeds.
– Eye protection and heavy gloves are mandatory.
Shipping:
– We ship large cubes in Shielded Wooden Crates to comply with IATA air cargo regulations.
Ordering Guide
To get a quick quote, please specify:
1). Dimension: Side length (mm).
2). Marking: Do you need a “North Pole” dot? (Highly recommended).
3). Grade: N35 (Standard) or N52 (Max Strength)?
4). Quantity: (MOQ applies for custom sizes).
