Description
HS Magnet’s Alnico Class 3 Odometer Ring Magnet (outer Ø 23.00 mm × inner Ø 13.70 mm × thickness 3.00 mm) is engineered for reliable, repeatable flux in compact rotary devices. Machined from premium Alnico 3 alloy, it offers excellent thermal stability, corrosion resistance and dimensional precision—perfect for odometers, encoders and other metering instruments.
Key Features
- Material & Magnetic Properties
• Grade: Alnico 3 (Class 3)
• Remanence (Br): ≈ 0.45 – 0.50 T
• Intrinsic coercivity (Hci): ≈ 35 – 45 kA/m
• Maximum energy product (BHₘₐₓ): ≈ 3.5 – 4.5 MGOe
• Maximum operating temperature: up to 500 °C - Dimensions & Tolerances
• Outer diameter: Ø 23.00 mm
• Inner diameter: Ø 13.70 mm
• Thickness: 3.00 mm
• Standard tolerance: ± 0.05 mm (± 0.02 mm optional) - Surface Finish & Coatings
• Standard: oxide-passivated for basic corrosion protection
• Optional coatings: nickel, Ni–Cu–Ni, gold plating or epoxy for enhanced durability
• Precision-ground pole faces and edges for uniform field distribution - Packaging & Handling
• Individually foam-padded or tray-packed to prevent chipping
• Includes magnetic warning labels and handling instructions
• Custom bulk, blister or kit packaging available on request
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