3mm (1/8") Neodymium Sphere Magnets – N52 Grade 

Key Features:

• Diameter: 3mm (Approx. 1/8")
• Precision Tolerance: ±0.05mm 
• Magnet Grade: N52 
• Pull Force: Approx. 0.46 lbs 
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating 
• Magnetization: Axially magnetized (Poles on opposite sides of the sphere)

Material Description:

Our 3mm N52 spheres are designed for high-performance applications where multi-directional movement is essential. Unlike block or disc magnets, these spheres can rotate freely to find their poles, making them perfect for creating articulated joints in scale models or acting as precision bearings in micro-mechanical systems. The N52 grade ensures that even at this micro-scale, the magnetic bond is secure and responsive.

Handling Advice: NOTICE: These magnets are tiny and travel quickly. Because they are spherical, they can roll easily and snap together from a distance. Always use a non-magnetic tray or mat when working with these spheres to prevent loss or accidental impact shattering of the brittle neodymium core.

Warnings and Safety Information:

• CHOKING & INGESTION HAZARD: Extremely dangerous if swallowed. Their size makes them easily ingestible by children or pets.
• Ingestion Warning: Swallowing two or more magnets can cause they to attract through intestinal walls, leading to severe internal injury or death. KEEP OUT OF REACH OF CHILDREN.
• Medical Safety: KEEP AWAY from pacemakers and sensitive medical implants at all times.
• Electronics: Safe for modern devices at a distance, but avoid direct contact with magnetic storage.

Applications:

• Articulation for 28mm and 32mm gaming miniatures (perfect for ball-and-socket limb joints)
• Precision micro-robotics and miniature magnetic bearings
• Scientific research involving magnetic field mapping and fluid dynamics
• Custom jewelry clasps and micro-mechanical latches
• Interactive 3D-modeling and architectural structural prototypes