SM-03152023 N52-grade neodymium magnet 50x50x25mm with a precision-machined central hole
Features
Industry-Leading Magnetic Strength
The N52 grade provides 20–30% stronger magnetic force compared to lower grades like N42 or N35, enabling reliable performance in heavy-duty tasks. For example, a 50x50x25mm N52 magnet can generate sufficient pull force to secure metal components weighing hundreds of kilograms, making it ideal for industrial clamping, lifting systems, and magnetic separators. Its high remanence (Br ≥ 1.48 Tesla) ensures minimal flux loss over time, maintaining consistent performance in demanding environments.
Precision-Machined Central Hole
The 50x50x25mm magnet features a precision-drilled central hole (diameter typically tailored to customer specifications), allowing for secure mounting via bolts, shafts, or screws. This design eliminates the need for adhesive or external fixtures, streamlining assembly processes in automated machinery, robotic arms, and CNC equipment. The hole’s tolerance is maintained at ±0.05mm, ensuring exact alignment with mechanical components and preventing vibration or misalignment during operation.
Corrosion-Resistant Coatings
To enhance durability in harsh conditions, the magnet is coated with triple-layer nickel-copper-nickel (Ni-Cu-Ni) plating, which provides superior resistance to humidity, chemicals, and oxidation. Alternative coatings like epoxy resin or gold/silver plating are available for specialized applications, such as marine environments or electronics manufacturing. Salt spray testing confirms the coating’s longevity, with nickel-plated variants enduring 48–72 hours of corrosion exposure without degradation.
High-Temperature Stability
While standard N52 magnets operate optimally below 80°C, advanced variants incorporate trace elements like dysprosium (Dy) to improve coercivity and thermal resistance. This modification allows the magnet to retain performance in applications involving intermittent heat exposure, such as electric motor rotors or industrial actuators.
Customization and Compliance
Manufacturers offer customizable dimensions, tolerances, and coatings to meet specific project requirements. For instance, the 50x50x25mm block can be adjusted to thinner profiles (e.g., 50x50x10mm) for space-constrained assemblies. Additionally, the magnet complies with RoHS, REACH, and EPR regulations, ensuring safety and environmental sustainability in global markets.
Applications
Product Details
Introduction
The N52-grade neodymium magnet (50x50x25mm with a precision-machined central hole) represents the pinnacle of commercially available rare-earth magnetic technology. Engineered for high-performance industrial applications, this magnet combines exceptional magnetic strength, precision engineering, and versatile mounting capabilities. As the highest standard grade in the neodymium-iron-boron (NdFeB) family, the N52 designation signifies a maximum energy product of 52 MGOe (Mega-Gauss Oersteds), delivering unmatched holding force and efficiency in compact dimensions. Its square block shape with a central hole enables secure integration into mechanical systems, robotics, and automation setups, making it a critical component in advanced manufacturing and engineering.