SmCo ring magnets serve in high-temperature sensors, magnetic couplings, pumps and rotary equipment where the central hole allows shaft mounting.
We produce rings with axial, radial or multi-pole magnetization.
Key Specifications
| Specification | Value |
|---|---|
| Grades | Sm1Co5, Sm2Co17 |
| Shapes | Ring, tube |
| Max working temp | Up to 350 °C |
| Magnetization | Axial, radial, multi-pole |
| Sizes | OD 5 – 100 mm typical |
| Applications | Sensors, couplings, pumps, generators |
All magnets are produced to order. Please provide grade, dimension (or drawing), magnetization direction, coating and quantity for quotation. Email sales@polemagnet.com or use the inquiry form — we reply within 24 hours.
FAQ
SmCo Ring Magnets — FAQ
Can SmCo rings be radially multi-pole magnetized?
Yes, radial multi-pole patterns are available and commonly used in high-temperature encoder and coupling applications.
What tolerance is achievable on SmCo rings?
Grinding achieves ±0.05 mm on OD and ID for most ring sizes.
Do you provide free samples for testing?
Yes, sample orders are welcome. Send your drawing or specification together with the intended application so our engineers can recommend the correct grade, magnetization direction and coating before we prepare samples.
Can the factory produce to my drawing with special tolerances?
Yes. We machine, grind and inspect to customer drawing tolerances. For sintered NdFeB the standard machining tolerance is ±0.05 mm and can be tightened to ±0.02 mm with diamond grinding where the geometry allows.
Need Custom Magnets for Your Project?
Send your drawing, grade, magnetization direction and quantity. Our engineers will reply with a quotation within 24 hours.