Ferrite Ring Magnet AOAUTO Grade 8 Ceramic Disc Donut 30x18x5mm 28pcs

Description

Product Overview

The Ferrite Ring Magnet from AOAUTO is engineered for demanding industrial and hobbyist applications. Each unit measures 30 mm in outer diameter, 18 mm in inner diameter, and 5 mm in thickness, delivering a compact yet powerful magnetic field. Constructed from high‑performance Y35 ferrite, these Grade 8 ceramic disc magnets exhibit superior demagnetization resistance, corrosion resistance, and oxidation resistance, ensuring long‑term reliability even in harsh environments. The set includes 28 identical ring magnets, providing ample quantity for bulk projects, prototyping, or replacement inventories. With a precise central hole, the magnets can be easily mounted on shafts, bolts, or other hardware, allowing for secure attachment to metal surfaces without slipping. The product dimensions and weight (approximately 11.36 ounces for the full set) make it convenient for both handheld use and integration into larger assemblies.

Usage

These versatile ring magnets are suited for a wide range of scenarios. In residential settings, they serve as reliable fasteners for refrigerator doors, magnetic spice racks, and whiteboard accessories, keeping notes and photos firmly in place. In educational labs, the magnets enable quick assembly of magnetic circuits, allowing students to explore electromagnetic principles safely. For industrial users, the magnets are perfect for tool organization, magnetic sweepers, and temporary fixtures on metal workstations. Hobbyists appreciate the ease of integrating the magnets into DIY projects such as magnetic levitation experiments, custom magnetic closures for cabinets, and creative art installations. The central hole design also facilitates mounting on rotating shafts, making them ideal for motor testing rigs, sensor housings, and prototype gear assemblies.

Why Choose Us

Choosing AOAUTO means selecting a partner committed to quality and consistency. Each magnet undergoes rigorous inspection during and after production to verify magnetic strength, dimensional accuracy, and surface integrity. The use of Y35 ferrite material ensures a higher magnetic flux density compared to standard ferrite, translating into a stronger hold for the same size. Our packaging of 28 pieces per set is designed for convenience, reducing the need for multiple orders and minimizing inventory management overhead. Additionally, AOAUTO provides responsive customer support, offering technical assistance, replacement options, and guidance on optimal usage. Our reputation in the industrial and scientific market is reflected in a solid Best Sellers Rank and positive customer reviews, confirming the reliability and performance of our magnetic solutions.

Key Features

• High‑strength Grade 8 ferrite delivers a powerful magnetic pull in a compact ring shape
• Corrosion‑resistant ceramic composition ensures durability in humid or outdoor environments
• Central hole design allows easy mounting on shafts, bolts, and other hardware without slipping
• Pack of 28 magnets provides ample quantity for bulk projects, prototyping, and replacements
• Responsive after‑sales support and technical assistance from AOAUTO’s dedicated team

FAQ

Can these magnets be used on non‑metallic surfaces?

No. Ferrite ring magnets require a ferromagnetic surface such as steel or iron to generate a holding force. They will not adhere to plastic, glass, or wood.

What is the temperature range for safe operation?

The magnets maintain their magnetic properties from -20 °C up to 150 °C. Exposure beyond this range may cause a temporary loss of magnetism.

Are the magnets safe for food‑related applications?

While the ceramic material is non‑toxic, the magnets are not certified for direct contact with food. Use them in food‑storage areas only as a non‑contact holder.

How do I prevent the magnets from attracting each other during storage?

Store the magnets in the provided cardboard box with the individual compartments separated by a thin non‑magnetic barrier, or keep them spaced apart on a non‑magnetic surface.

Do you offer bulk discounts for larger orders?

Yes. AOAUTO provides tiered pricing for bulk purchases. Please contact our sales team for a customized quote based on your required quantity.