N28EH Neodymium-Iron-Boron Ring Magnet

/N28EH Neodymium-Iron-Boron Ring Magnet
  • N28EH Neodymium-Iron-Boron Ring Magnet

N28EH Neodymium-Iron-Boron Ring Magnet, RingMagnet, N28EH Magnets, N28EH Neodymium Magnet, Permanent Motor Magnet, Speaker Magnet, Neodymium Ring Magnet, Magnetic Rings, Sintered Neodymium-Iron-Boron Ring

Product Name: N28EH Neodymium-Iron-Boron Ring Magnet
Magnet ID:Neodymium-N28EH-2
+ Highest Energy of All Permanent Magnets
+ Moderate Temperature Stability
+ High Coercive Strength
+ Moderate Mechanical Strength
Our Superiority: Customized is Available!
* T/T, L/C, Paypal and other payment accepted.
* Orders of any size.
* Worldwide delivery. Fast Shipping.
* Quality and price guaranteed.
* Contact us to discuss your magnet needs.
Hangseng Magnetech Inc. (SUPERMAG, neoi) is your best source for the highest quality magnets, neodymium magnets, magnetic devices and expert application assistance for OEM, point-of-purchase, industrial and retail markets.

1. RAW MATERIALS High Working Temperature Segment Magnet
Minerals – such as Neodymium, Iron and Boron – are sourced from all around the world.
Many required elements, such as Neodymium, are very uncommon and newver found on their own. They must be heavily refined & processed before the material is useable!
The course materials are jet-milled down into powder, which is then blended into an incredibly precise composition.
At this point the powder is in danger of oxidation, and must be kept in an inert gas, such as Argon!
The mixture is compacted into shape and a magnetic field is appled to ensure all particles are aligned… this maximises magnetic output!

Neodymium Iron Boron magnet ring with color zinc plated, thickness of coating is 8 -10microns
Besides color zinc coating, we also provide Zn coating (one layer), zinc Cr3+, coating.
znic Cr3+, coating is shinny color, and Znic coating is bright blue.
Ring magnet are used for holding systems,permanent magnet filter, loudspeaker, headphones and meters
Packaging: Neutral box packaging, inner box , foam inside and other protection, to ensure safely of transportation.
Air package and sea packages are both available..
Delivery time: 8 ~ 20days, depend on customer’s order quantity.
Loading port : Ningbo port or Shanghai Port

  • Affordable price
  • Customized magnet is Available
  • Any payment accepted
  • Fast shipping, Worldwide delivery
  • Quality guaranteed
  • Offer free neo magnets solution

Product Range


Magnetisation Grade:         N28EH
Material: Sintered Neodymium-Iron-Boron (NdFeB, NIB, REFeB, Neoflux, NeoDelta), Rare Earth Neo
Magnet ID:              Neodymium-N28EH-2
Plating / Coating:  Nickel (Ni-Cu-Ni) / Double Ni / Zinc (Zn) / Epoxy (Black/Gray)
N28EH Magnet Shape:         Block, Segment, Arc, Cube, Ring, Disc, Disk, Cylinder, Cylindrical, Round, Tube, Wedge, Rectangle, Rod, Bar
N28EH Magnet Size:  Customized
Tolerance:         ±0.05 mm
Magnetisation Direction:    Axial  /  Radial
Residual Magnetic Flux Density (Br): 1040-1090 mT (10.4-10.9 kGs)
Energy Density (BH)max:             207-231 KJ/m³  (26-29 MGOe)
Coercivity Force (Hcb):              ≥ 780 kA/m ( ≥ 9.8 kOe)
Intrinsic Coercivity Force (Hcj):    ≥ 2338 kA/m ( ≥ 30 kOe)
Maximum Operation Temperature: 200 °C
Delivery Time:           14-35 days

Technical Drawing