Original Square NdFeB Magnet Magnetic Block

Overview

The Original Square NdFeB Magnet Magnetic Block is a foundational neodymium magnet designed for industrial and educational applications, featuring a standardized square geometry (10x10x10mm to 100x100x100mm) and N40-N45 grades for reliable magnetic performance. Constructed from sintered NdFeB with a nickel-copper-nickel coating, this block magnet offers consistent magnetic flux density and mechanical durability, serving as a building block for magnetic assemblies, separators, and research projects.

Features

Standardized Performance:

Grade Options: N40 (BHmax: 38-40 MGOe) for general use, N45 (BHmax: 43-45 MGOe) for stronger fields, both with coercive force ≥1300 Oe to resist demagnetization from stray fields.

Uniform Magnetization: Axial magnetization ensures consistent pole orientation (north-south on opposing faces), ideal for stacking or arranging in arrays.

Durability and Versatility:

Industrial-Grade Coating: 20μm Ni-Cu-Ni plating passes 500-hour salt spray tests, suitable for outdoor magnetic separators and conveyor belt systems.

Machinable Surface: Smooth sides (Ra ≤3.2μm) allow bonding with adhesives or mechanical fasteners, enabling custom assemblies like magnetic tool holders and pickup tools.

Cost-Effective Solution:

Economical Sizing: Standard 10x10x10mm blocks start at $0.50/unit in bulk, with volume discounts for 1000+ pieces, making them ideal for educational kits and prototyping.

Stock Availability: 95% of orders for standard sizes (up to 50x50x50mm) ship within 48 hours from our global warehouses.

Application

Magnetic Separation: Removes ferrous contaminants from grain, plastics, and pharmaceuticals, with N45 blocks capable of lifting 2kg at 5mm air gap.

Educational Kits: Used in physics labs for demonstrating magnetic fields, Faraday's law, and Lorentz force, with non-toxic coatings safe for student handling.

DIY Projects: Powers homemade magnetic levitation devices, pickup tools, and refrigerator magnets, with customizable engraving for branding (minimum order 100 pieces).

Industrial Fixtures: Secures tools and components in jigs and fixtures, reducing setup time in assembly lines through quick magnetic attachment.

FAQ

Q: How many blocks can I stack before losing magnetic strength?

A: Stacking 10 N45 blocks axially increases pull force linearly, but lateral stacking (side-by-side) creates a wider pole face without significant strength gain.

Q: Can I drill holes in the magnet for mounting?

A: Yes, drill at low speed with a carbide bit, but avoid overheating (keep below 80°C) to prevent demagnetization.

Q: What is the difference between axial and radial magnetization?

A: Axial (through-thickness) is standard; radial (around the edge) is available for custom orders, ideal for cylindrical applications like roller bearings.

Q: Do these blocks come with protective packaging?

A: Yes, each block is individually wrapped in anti-static film, with bulk orders packed in styrofoam inserts to prevent chipping during transit.