15mm N52 Neodymium Ball Magnet: Super Strong Rare Earth

The 15mm N52 Neodymium Ball Magnet: Super Strong Rare Earth (SKU MAGNET-BALL-15mm) is a single spherical magnet made from rare earth material. It suits specialised magnetic applications where a compact, strong magnet is needed.

Reading the spec

• 15mm ball: about 1.5cm across. Small enough to handle easily, yet a solid piece of magnet material.
• N52: the maximum grade of neodymium material. For a magnet this size, that means the strongest pull neodymium offers.
• Spherical shape: there is no flat face or fixed top and bottom. The ball can rest against steel, or against another magnet, from any angle.

What else you need

A magnet only works against something that responds to it. That means ferrous metal such as iron or steel, or a second magnet. Plan the mating surface or partner magnet before you plan the ball.

Handling

Neodymium is brittle. Two strong magnets can snap together hard enough to chip or crack, and can trap skin between them. Keep the ball away from:

• pacemakers and other medical implants
• bank cards and other magnetic storage
• phones, hard drives and similar electronics
• young children, because a swallowed magnet is a medical emergency

Pull the ball off a steel surface by sliding or rolling it clear. Prying it straight up takes more force and risks a sudden release.