40mm x 20mm x 4mm N52 Square Block Rare Earth Neodymium Magnet 40x20x4mm

Key Specifications

• Pull Force: 26.5 lbs
• Dimensions: 40mm × 20mm × 4mm thickness
• Material: Neodymium (NdFeB) - The world's strongest permanent magnet

Product Description

This high-performance N52 neodymium magnet block delivers exceptional holding power in a large rectangular format. Made from premium rare earth alloy of neodymium, iron, and boron, it generates an impressive 26.5 lb pull force while maintaining a slim 4mm profile.

The magnet features durable nickel-copper-nickel plating to prevent corrosion and ensure long-term reliability. Despite its powerful magnetic capabilities, the brittle ceramic-like construction requires careful handling to prevent chipping, cracking, or damage from impact.

Important Safety Information

⚠️ WARNING: Handle with extreme caution - not suitable for children.

• Keep away from children due to serious choking hazard
• Never swallow or insert into body - can cause severe internal injury
• Maintain minimum 6-inch distance from pacemakers and medical devices
• Prevent magnets from colliding forcefully to avoid dangerous shattering
• Keep away from electronic devices, credit cards, and smartphones
• Use protective gloves and eye protection when handling
• Store magnets separated by non-magnetic spacers

Common Uses

Perfect for heavy-duty and industrial applications including:

• Industrial holding and mounting systems
• Magnetic separation and material handling
• Speaker and audio equipment manufacturing
• Automotive magnetic accessories and tools
• Commercial display and signage mounting
• Science demonstrations and educational projects
• Magnetic sweepers and retrieval tools
• Workshop and garage organization systems