Neodymium Block Magnet

Square Block Neodymium Magnet:

Square block Neodymium magnets are a type of Neodymium magnet characterized by their square shape with equal dimensions on all sides. These Neodymium rare earth block magnets possess exceptional magnetic strength and are widely utilized in various industrial and consumer applications. Their uniform shape and powerful magnetic field make them ideal for tasks requiring strong magnetic attraction in a compact form factor. Square block Neodymium magnets are commonly found in magnetic clasps, closures, fasteners, and magnetic therapy devices. Their versatility and high performance make them indispensable in industries ranging from manufacturing and engineering to healthcare and consumer electronics.

Rectangular Block Neodymium Magnet:

Rectangular block Neodymium magnets, on the other hand, feature a rectangular shape with different dimensions for length, width, and thickness. These magnets offer similar magnetic strength to their square counterparts but provide flexibility in their dimensions, allowing for customization to suit specific applications. Strong rectangular Neodymium magnets are often employed in magnetic separation systems, magnetic resonance imaging (MRI) machines, magnetic therapy products, and various industrial assemblies where a strong and tailored magnetic field is required. Their rectangular shape enables efficient utilization of space and facilitates integration into complex designs. With their robust magnetic properties and adaptable geometry, rectangular block Neodymium magnets serve as indispensable components across a broad spectrum of industries and applications.

Characteristics of Neodymium Block Magnet:

• Outstanding magnetic properties – Br high to 14.5 kGs (1. 45T) and (BH)max high to 52 MGOe (414 kJ/m3)

• High demagnetization resistance – maximum Hcj higher than 35 kOe (2785 kA/m)

• High working temperature – maximum working temperature high to 230ºC

• Wide range of grades with new ones regularly being developed – High magnetic properties, AH grades or Low Weight Loss materials and so on.

Size Range of Neodymium Block Magnet:

Normal Size Range: L(Length): 1~180mm, W(Width): 0.4~100mm, T(Thickness): 0.4~120mm

Maximum Size: Rectangular: L180 x W80 xT60mm, Square: L100 x W100 xT70mm

Minimum Size: L1 x W1 x T0.4mm

Orientation Direction Size: Lower than 80mm

Tolerance: Generally +/-0.1mm, Particularly +/-0.03mm

How to Machine Neodymium Block Magnet:

Generally the finished block of small dimension is sliced from the big block directly. If the dimension of one or two directions is large, for example >60mm, it should need grinding and EDM cutting, due to the limits of the slicing machine. If all three directions are too large, only grinding is enough. Prior to coating, the small block needs vibration tumbling and the big block needs manual chamfering.

Main Application for Neodymium Block Magnet:

It is mainly used in the electric motors, wind turbines, pump couplings, chemical pumps, sensors, magnetic sputtering cathodes, magnetic assemblies, etc.

Small Rectangular Neodymium Magnets: Typically used in crafts, small electronic devices, and sensors.

Medium Neodymium Block Magnets: Common in more substantial electronic applications, motors, seamless hermetic pumps, and machinery.

Large Block Neodymium Magnets: Used in industrial applications, magnetic separation, and larger machinery.

Main Test Items Prior to Delivery:

Hight-quality rare earth Neodymium block magnets are hard to produce, so we have a strict testing procedure before the Neodymium magnet is delivered. In order to ensure NdFeB magnets to meet requirements, we main test following items: size, weight loss, magnetic properties, flux, flux density, angle deviation, magnetic loss, appearance, coating thickness, corrosion resistance, etc.