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Samarium Cobalt Ring Magnet Description

Samarium cobalt ring magnets are disc magnets or cylinder magnets with a plain hole through the center of the magnet. Samarium cobalt (SmCo) ring magnets are widely used in applications that have high temperature requirements. Samarium cobalt (SmCo) ring magnets can maintain their magnetic field in temperatures that exceed 250 C.  There are two compositions of magnets in this family: Sm1Co5 and Sm2Co17. The highest commercially available energy products of Sm2Co17 are in the 30MGOe range.

Key Features of SmCo Ring Magnets

• High Magnetic Strength: Strong performance with excellent stability

• Wide Temperature Range: Operates reliably from -273°C to +350°C

• Corrosion Resistant: No coating needed—naturally oxidation-resistant

• Compact Ring Design: Easy integration into motors, sensors, couplings

• Brittle but Powerful: Handle with care; designed for performance

Specifications of SmCo Ring Magnets

• Material: SmCo5 or Sm2Co17

• Grades Available: YXG28 to YXG34H

• Dimensions: ID 3mm – 100mm; Custom sizes available

• Max Operating Temp: Up to 350°C

• Shape: Axially or radially magnetized ring

Also, you can use the homepage magnet finder to filter by shape, size (thickness, diameter, OD, ID), grade, coating, and pull force for super neodymium magnets.

Samarium Cobalt Ring Magnet Applications

SmCo ring magnets can be used for coreless motors, variable frequency air conditioners, oil industry dewaxing device motors, sensors, computer disc drivers, linear actuators, etc, which have good applications in the low-carbon, and energy-saving.

Stanford Magnets specializes in manufacturing and supplying SmCo ring magnets applied in various industrial applications. We have advanced technology, rich experience, and professional engineering technicians in this field. If you require a specific size, please contact us for a custom SmCo magnet quote.