Countersunk Ø20.0 mm N40 Nickel (Ni+Cu+Ni) Neodymium Magnet

high consistency, high max continuous working temperature
excellent corrosion resistance
NdFeB countersunk ring magnet, with a big hole in one side and another small hole in the other. It is used for fixing a contersunk screw easier.
NdFeB, the third generation of rare earth permanent magnet,has the high remanence,high coercive force,high energy product and high cost ratio.It can be easily formed into various size and widely used in many fields.
1.Material  of NdFeB magnet:
Magnet N-( N30-------N52), working temperature:80 degree Celsius.
Magnet M-(N33M-----N50M), working temperature:100 degree Celsius.
Magnet H-(N33H------N48H),  working temperature:120 degree Celsius.
Magnet SH-(N30SH---N45SH), working temperature:150 degree Celsius.
Magnet UH-( N30UH--N40UH),  working temperature:180 degree Celsius.
Magnet EH-(N28EH---,N38EH)     working temperature:200 degree Celsius.
Magnet AH-(N28AH, N30AH, N33AH)working temperature:220 degree Celsius.
2.Surface Treatments: Zinc, Nickel, Nickel+Copper+Nickel, Epoxy, Gold, Silver, Passivation, any coating  as you like.
3.Magnet shape: Block,Ring, Disc, Cylinder, Rod,Bar, Cube,Sphere,Strip etc.
4.Directions of Magnetization: Axial, thickness, radial, dameter,Multi-pole oriented
5. Packing methord: standard export package, vacuum bag, all available upon your request.
Application:
Our magnets can be widely used in all kinds of electromotors, separators, audio systems, wind turbine, sensors,medical equipment,toys,computers, elevators, cellphones, VCDs and maglev.
We are well equipped to manufacture these materials to customers' specifications.