developmental education magnet plus

  types of magnetic ball materials

Sintered Ndfeb is the strongest permanent magnets in the world up to date, which has excellent properties of high remanence,coercivity,and Max.energy.

Neodymium Magnets (Nd-Fe-B) Overview

Neodymium Magnets (Neodymium Iron Boron Magnets), also known as NdFeB, NIB, or Neo magnets, are the most widely-used type of rare-earth magnet. It is the strongest type of permanent magnet made from an alloy of Neodymium, Iron, and Boron with the Nd2Fe14B tetragonal crystalline structure. It has replaced other types of magnets in many applications in modern products that require strong permanent magnets, such as motors in cordless tools, hard disk drives, and magnetic fasteners.

Use of sintered Neodymium magnets, either as an individual magnet or in an assembly, without license is prohibited by the Patent Law of CHINA. All sintered Neodymium Iron Boron magnets supplied by Jamag Magnets Company are licensed.

Key Advantages

• Neodymium magnets are the most powerful commercially produced magnets.
• Higher Maximum Energy Product ranging from 30 MGOe to 52 MGOe.
• Neodymium magnets can replace Samarium Cobalt magnets, especially where operating temperature is lower than 176F/80C.
• Very high strength and relatively low cost.
• Compared to Alnico and Sm-Co magnets, relatively easier to machine.

Quick Leads

• Manufacturing process - sintering (most common), injection molding, and compression bonding.
• Shapes available - blocks, bars, discs, rings, cylinders, arc segments, or irregular shapes, etc.
• Wide range of Grades available - from 3512 to 3833 or N35 to 38AH (First 2 digits represent BHmax, and second two digits represent Intrinsic Coercivity, Hci.)
• Density: 7.4 -7.6 g/ cm³; Hardness: 600 {Hv}
• Prone to oxidation, plating (Ni-Cu-Ni) is recommended
• Some particular grades of JAMAG Magnets can achieve 446F/230C, the max working temperature.
• Saturation magnetizing field required - about 35kOe
• Machining - Neodymium magnets should be machined by grinding using diamond wheels, however, of hard magnet materials, Neo magnets are the easiest ones. We can successfully machine very small magnets with tolerances up to +/-.001".

Common Applications

Sensors   Linear actuators   Microphone assemblies    Magnetic separators   DC and servo motors   Speakers   Printers   Magnetic hooks Computer rigid disc drives   Beam controls   Intelligent toys   MRI/NMR

How to Prepare Your Inquiry

Our manufacturer specializes in manufacturing permanent magnets according to customers' specifications. In order for us to supply you the right product at a good price within 24hours, we need you to provide us with as much information as possible about your magnet (See our Quotation Request Form). We need to know:
1.Size, shape, and grade N35 OR higher (send drawings if possible),
2. Magnetization direction,
3. Coatings Ni or Zn 
4. Quantity.

5. Payment method, T/T or Paypal

6. Destination, and whether have a DHL account. 
Once we have such information, we will send you a price quotation in detail. Please shop around to be sure you get the best price for the high quality permanent magnets you need

Jamag is your best choice  

JAMAG has the latest technology, superior quality and bargain choices,

for more information, pls contact me anytime~~~:)

we can also provide custom-made service (different sizes), for detail imformations, contact me pls!