17.5mm x 7.5mm x 3mm Ferrite Ring Magnet (Outer Dia 17.5mm, Inner Dia 7.5, Height 3mm)

17.5mm × 7.5mm × 3mm Ferrite Ring Magnet (Outer Dia 17.5mm, Inner Dia 7.5mm, Height 3mm)

This ferrite ring magnet is made from sintered strontium ferrite (ceramic), one of the most widely used and cost-effective permanent magnet materials available. With an outer diameter of 17.5mm, inner diameter of 7.5mm, and a height of 3mm, this ring magnet features a central hole that makes it ideal for applications requiring a fastener, rod, or shaft to pass through the centre. The ring shape provides a unique magnetic field distribution compared to solid disc magnets, making it a versatile choice for a wide range of mechanical and electronic applications. Ferrite magnets are naturally resistant to corrosion and demagnetisation, making them a practical long-lasting choice for both indoor and outdoor use without any protective coating needed.

Key Features

• Central hole allows a fastener, rod, or shaft to pass through for easy mounting
• Ring shape provides unique magnetic field distribution suited for mechanical applications
• Naturally corrosion resistant, suitable for outdoor and humid environments
• High operating temperature of up to 250°C for heat exposed applications
• Axially magnetised through height for easy stacking and alignment
• Cost effective choice for general purpose and bulk applications

Common Uses

• Motor and speaker assemblies
• Sensor and reed switch activation
• Magnetic bearings and couplings
• Craft and hobby projects
• Educational science experiments
• Packaging and box closures
• General purpose holding and organising