Neodymium Ring Magnets
-Product Highlights
MagnetGlobal’s Neodymium Ring Magnets are precision-machined annular NdFeB magnets, produced across a wide range of outer diameter, inner diameter, and thickness combinations. Ring magnets are widely used in motor and sensor assemblies, magnetic couplings, and any application requiring a through-bore for a shaft, fastener, or wiring.
Product Information
Material & Grade Options
Standard grades N35–N52, with high-temperature thermal grades (M, H, SH, UH, EH) available for applications up to 200°C. Axial or diametric magnetization available depending on your application; multi-pole magnetization can be arranged for motor and encoder applications.
Typical Dimension Range
| Dimension | Typical Range |
| Outer Diameter (OD) | 5 mm up to 150 mm |
| Inner Diameter (ID) | 2 mm up to 100 mm (sized to your shaft or fastener) |
| Thickness | 1 mm up to 30 mm |
Ranges above reflect common production sizes. Custom OD/ID/thickness combinations and magnetization patterns are available — send us your drawing or required dimensions for a quote.
Key Advantages
- Precise Bore Tolerance: Machined to ±0.05 mm for reliable fit over shafts and through-bolts.
- Magnetization Flexibility: Axial, diametric, or multi-pole magnetization to match motor, sensor, or coupling requirements.
- Full Grade Range: From standard N35 through high-temperature EH-grade material for motors and assemblies that run hot.
Applications
Electric motor rotors, magnetic couplings, sensor and encoder assemblies, speaker components, and any design requiring a magnet with a central through-hole.
Contact Us
If you have any needs or questions, please feel free to contact us. Our team is always available — real people, ready to help at every step.
