Block NdFeB Magnets

The specifications of block NdFeB magnets are determined by three dimensional parameters: length, width and thickness. According to unified industry standards, the dimension aligned with the magnetization axis is defined as thickness. For standard products, thickness is the smallest dimension, and customized non-standard magnetization is supported.

We can customize and manufacture long strip block magnets magnetized along the length or width upon customers’ requests. No matter what magnetization mode is adopted, we consistently adhere to the unified definition standard of the thickness dimension to achieve clear and standardized specification labeling.

Performance Grades: Please refer to our complete NdFeB grade performance datasheet.

Magnetization Direction: Fully customizable to match your equipment operation and installation requirements.

1. Core Material

Block NdFeB magnets are mainly composed of neodymium, pure iron and boron, with the chemical formula Nd₂Fe₁₄B. During production, various auxiliary metal elements are proportioned precisely according to required magnetic performance. The magnets are shaped via multiple precise metallurgical processes, featuring stable material properties and uniform magnetic performance.

2. Product Classification

NdFeB magnets are divided into two main categories: sintered NdFeB and bonded NdFeB. Sintered NdFeB boasts far superior magnetic performance, powerful magnetism and high stability, known as the "King of Permanent Magnets" in the industry. It is our core block magnet product, suitable for most industrial permanent magnet applications.

3. Production Process

Our sintered block NdFeB magnets are manufactured via a standardized full workflow with key procedures as follows: precise batching → high-temperature melting → ultra-fine powder making → oriented compaction → high-temperature sintering → precision machining → magnetization to finished products.

Secondary processing services including grinding, slicing, wire cutting, drilling, counterboring and precision electroplating are available upon customized demands, ensuring tight dimensional tolerances and perfect adaptability for application.

4. Surface Treatment

To improve rust resistance, corrosion resistance and oxidation resistance for different working environments, we offer a full range of surface coating treatments.

Conventional treatments: zinc plating (blue-white zinc, color zinc, etc.), nickel plating, Ni-Cu-Ni composite coating and paint coating.

Premium special treatments: epoxy resin coating, electrophoresis, phosphating, gold plating, silver plating, chrome plating, all customizable to match customers’ service environments and anti-corrosion grade requirements.

5. Application Fields

Benefiting from ultra-high permanent magnetic performance, flexible dimensions and wide compatibility, block NdFeB magnets are widely used in industrial and precision equipment, including various motors, VCM motors, electro-acoustic devices, MRI equipment, industrial magnetic separators, automation equipment, precision instruments and new energy equipment.