Neodymium NdFeB Ring Magnet Ø12 x Ø7 x 3mm N45

Neodymium NdFeB Ring Magnet Ø12 x Ø7 x 3mm N45, Sintering Neodymium Ring Craft Magnet, Powerful Rare Earth Permanent Ring Magnet, Sintered Neodymium Iron Boron (NdFeB) magnet, Buy Super Strong Bulk NdFeB Ring Neo Magnets China Supplier & Factory

Neodymium NdFeB Ring Magnet Ø12 x Ø7 x 3mm N45 Feature:
Material Neodymium
Plating  Nickel (Ni-Cu-Ni)
Outer Diameter D 12 mm
Inner Diameter d 7 mm
Volum  224 mm³
Temperature max. 80 °C
Magnetic Grade N45
Tolerance 0.1 mm
Direction axial
Weight 0,001701 kg
Pull Power Force 1,700 kg
Hight H 3 mm

Sintered Neodymium Iron Boron (NdFeB) magnet
Sintered Neodymium Iron Boron (NdFeB), or “neo” magnets, is the third generation of permanent magnet developed in the 1980s. It offers the strongest magnetic power today. With its excellent magnetic characteristics Neodymium Magnet offers flexibility for new designs or is replacing older materials like Alnico and Ceramic in many applications, including high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors and loud speakers.

The neodymium atom also can have a large magnetic dipole moment because it has 7 unpaired electrons in its electron structure as opposed to (on average) 3 in iron. In a magnet it is the unpaired electrons, aligned so they spin in the same direction, which generate the magnetic field. This gives the Nd2Fe14B compound a high saturation magnetization (Js ~1.6 T or 16 kG) and typically 1.3 teslas. Therefore, as the maximum energy density is proportional to Js2, this magnetic phase has the potential for storing large amounts of magnetic energy (BHmax ~ 512 kJ/m3 or 64 MG·Oe). This magnetic energy value is about 18 times greater than “ordinary” magnets by volume. This property is higher in NdFeB alloys than in samarium cobalt (SmCo) magnets, which were the first type of rare-earth magnet to be commercialized. In practice, the magnetic properties of neodymium magnets depend on the alloy composition, microstructure, and manufacturing technique employed. n50 ring magnet, neodymium diametral ring magnet