Magnetic Ring Assembly (Closed O‑Shape)

● Core Advantages of Closed O Shape Magnetic Ring Assembly

‑ Full closed O‑loop magnetic circuit design, effectively reduce magnetic flux leakage, uniform magnetic field, stable sensing signal and consistent adsorption force.

‑ One‑piece integrated forming without splicing gap, avoid magnetic displacement and failure caused by long‑term vibration.

‑ High‑performance NdFeB magnet core, stable magnetism, anti‑demagnetization under normal‑temperature working condition.

‑ Flat ring structure for embedded injection molding installation, will not scratch or damage plastic shell and mold.

‑ Multiple anti‑corrosion surface treatments, nickel plating, gold plating and epoxy coating for various harsh working environments.

● Comparison: Closed O‑Shape VS Open Split Magnetic Ring

‑ Magnetic performance: Closed O‑shape owns complete magnetic loop with low leakage; open split ring has obvious magnetic flux loss and unstable magnetic field.

‑ Application: Closed O‑shape fits precision sensing, wireless charging and high‑reliability electronics; open split ring is suitable for simple positioning and low‑demand assemblies.

‑ Molding performance: Seamless closed ring friendly for injection embedding; split ring seam may scratch plastic housing during molding.

‑ Service life: Integral closed structure without loose risk; split ring is easy to shift under long‑time vibration.

● Main Application Scenarios

This double-row closed O magnetic ring features low leakage performance, suitable for charging scenarios and injection molding processing, customizable plating services are available and factory samples can be provided for testing

‑ Precision electronic sensing modules: magnetic sensors, position detection and signal transmission equipment.

‑ Injection molding embedded magnetic parts: all‑plastic integrated electronic hosts, smart home plastic accessories.

‑ Wireless charging magnetic components: positioning magnetic ring for low‑power wireless charging coils.

High-definition display of the magnetic power bank compatible with smartphones, demonstrating the magnetic attachment usage effect and highlighting the MagSafe magnetic charging feature

‑ High‑end 3D educational toys: stable magnetic splicing and conduction for interactive model products.

● Technical Specifications

Thin metal power bank supporting magnetic wireless charging, real-time battery percentage screen

‑ Main Material: NdFeB magnet core + high‑precision metal outer frame

‑ Surface Treatment: Environmental nickel plating / gold plating / epoxy anti‑rust coating

‑ Size: Standard sizes in stock, non‑standard sizes support custom mold opening

‑ Magnetic Grade: N35 / N38 / N42 optional according to magnetic force requirements

‑ Working Temperature:‑20℃ ~ 80℃, high‑temperature resistant grade available

‑ Compliance: Meet international RoHS environmental‑protection standards

● Customization & Supply Capacity

‑ Support custom size, magnetic strength, plating finish and packaging label.

‑ Independent anti‑collision packaging, export carton for bulk orders.

‑ Standard samples:1‑3 working days; custom samples:4‑7 working days.

‑ No strict MOQ for trial orders, support small‑batch trial and million‑level mass production.

● Frequently Asked Questions

‑ Can I customize special‑size closed O shape magnetic ring assembly?

Yes, we offer exclusive mold opening according to your drawings and injection‑molding requirements.

‑ Which magnetic grade should I choose.

N35 for consumer electronics and toys; N38/N42 for high‑sensitivity sensing devices. Our team can give free professional suggestions.

‑ Will it crack during injection molding?

Integral pressure forming enhances anti‑cracking performance. The seamless flat ring will not scratch or crack plastic housing in full‑wrap injection molding.