Description
HS Magnet’s ferrite ring magnet (Ø68 × Ø32 × 8 mm) is engineered for reliable, cost-effective performance in audio and electromechanical devices. Made from high-grade strontium ferrite (SrO·6Fe₂O₃), this ring-shaped magnet delivers stable flux, excellent temperature stability and long service life—ideal for loudspeaker drivers, microphones, small motors and sensors.
Key Features
- Material & Magnetic Properties
• Composition: SrO·6Fe₂O₃ (Hard Ferrite, Ceramic)
• Remanence (Br): ≈ 0.25 – 0.35 T
• Coercivity (Hcj): ≥ 200 kA/m
• Maximum energy product (BHₘₐₓ): ≈ 1.0 MGOe
• Curie temperature: ≈ 450 °C - Dimensions & Tolerances
• Outer diameter (OD): 68 mm
• Inner diameter (ID): 32 mm
• Thickness (height): 8 mm
• Standard tolerance: ± 0.3 mm (± 0.1 mm on request) - Finish & Coating Options
• Natural ceramic gray (standard)
• Optional epoxy paint (black or custom colors)
• Optional nickel or zinc plating - Magnetization
• Axial through thickness (flat faces are N/S)
• Radial magnetization available upon request - Packaging & Handling
• Individually poly-bagged or bulk in foam-lined cartons
• Protective spacers to prevent chipping
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