Description
HS Magnet’s Alnico 5 block magnet (30 × 30 × 15 mm) with a precision-drilled Ø8.2 mm mounting hole is engineered for reliable magnetic clamp and workholding applications. Manufactured from high-grade Alnico 5 alloy and CNC-ground on all faces, it delivers consistent flux, excellent thermal stability, and tight dimensional control in demanding environments.
Key Features
Magnetic Properties
- Grade: Alnico 5
- Remanence (Br): ≈ 1.20 – 1.30 T
- Maximum energy product (BHₘₐₓ): ≈ 5.8 – 6.2 MGOe
- Coercivity (Hcb): ≈ 45 – 50 kA/m
- Temperature coefficient of Br: + 0.02 %/°C
- Maximum operating temperature: 540 °C
Dimensions & Tolerances
- Block size: 30.00 × 30.00 × 15.00 mm
- Mounting hole: Ø 8.20 mm
- Standard tolerance: ± 0.05 mm (± 0.02 mm ultra-tight optional)
- CNC-ground faces ensure flatness and parallelism
Surface Finish & Coatings
- Natural grey, sintered finish
- Optional corrosion-resistant plating: nickel, tin or epoxy
Packaging & Quality Assurance
- Individually wrapped in anti-corrosion paper
- Packaged in foam-lined trays or polybags to prevent chipping
- Full batch traceability with material certificates and magnetic test reports
- Custom packaging: blister packs, wooden crates, bulk cartons
Typical Applications
- Magnetic clamp assemblies and chucks
- Workholding fixtures in milling, grinding, and turning
- Magnetic lifters and separators
- Jigs, fixtures and precision assembly platforms
- Automation equipment and robotics end-effectors
Why Choose HS Magnet?
- Over 20 years of expertise in Alnico magnet design and manufacturing
- In-house sintering, CNC machining and coating for full process control
- 100 % inspection of magnetic properties and dimensions
- Flexible MOQs: from prototype samples to high-volume production
- Fast global shipping and dedicated technical support
Contact HS Magnet today to discuss custom tolerances, special coatings, or bespoke packaging for your next magnetic clamp solution.
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