Huge Magnetic Ring for Speaker Motor

/Huge Magnetic Ring for Speaker Motor
  • Huge Magnetic Ring for Speaker Motor

Huge Magnetic Ring for Speaker Motor, Sintered NdFeB (Neodymium Iron Boron) Ring Magnet, N42SH Magnets, Huge Neodymium Magnet, Neodymium Ring Magnet, Neo Ring, Rare Earth Permanent Motor Magnet, Electronic Magnet

Product Name:Huge Magnetic Ring for Speaker Motor
Magnet ID:Neodymium-N42SH-8
+ 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.

Epoxy Coated Neo Magnets, Magnets can largely be broken up into two categories: non-permanent and permanent; non-permanent magnets are electromagnets which require an external source of power and are triggered electrically to be magnetic. Electromagnets have many industrial applications such as solenoid valves, AC and DC motors, biomagnetic separation, transformers and so on. Permanent magnets include ceramic magnets (also known as ferrite magnets), alnico magnets and rare earth magnets. For instance, ceramic magnets have lower magnetic power and are more brittle and easily breakable than some other magnets, but they are much more cost-effective and are used in non-structural applications in motors, magnetic chucks and magnetic tools. Rare earth magnets, on the other hand, are less cost-effective to manufacture but are far more powerful and retain their magnetism better than ferrite magnets; they are used as industrial magnets for holding and lifting, motors, speakers and sensors, testing and MRIs.

Sintered NdFeB (Neodymium Iron Boron) Magnet

We mainly produced sintered NdFeB because it is the one widely used in many fields. The coercive force of Sintered NdFeB is very high and its Bhmax is about ten times of that of Ferrite magnet. As its fairly good mechanical properties, it can be processed into many different shapes or with various holes. Some of its products with high-performance can work under the situation up to 200℃. However, it is easy to be rusted for its elements. Therefore we should make surface treatment in accord with different requirements, such as zinc-coated, Nickel-coated, Ag- coated, Au-coated,Epoxy-coated etc.

At present we can manufacture the sintered NdFeB in a range from N35-N52,30M-50M,30H-48H,30SH-45SH,28UH-40UH, 28EH-38EH. And we can realize different shapes such as disc magnets, ring magnets, rectangle magnets, arc segment magnets and some other special shaped magnets. Some times we would help customers to design the shape of the magnet.

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

Product Range


Magnetisation Grade:         N42SH(T)
Material: Sintered Neodymium-Iron-Boron (NdFeB, NIB, REFeB, Neoflux, NeoDelta), Rare Earth Neo
Magnet ID:              Neodymium-N42SH-8
Plating / Coating:  Nickel (Ni-Cu-Ni) / Double Ni
N42SH Magnet Shape:         Block, Segment, Arc, Cube, Ring, Disc, Disk, Cylinder, Cylindrical, Round, Tube, Wedge, Rectangle, Rod, Bar
N42SH Magnet Size:  Customized
Tolerance:         ±0.05 mm
Magnetisation Direction:    Axial  /  Radial
Residual Magnetic Flux Density (Br): 1280-1320 mT (12.8-13.2 kGs)
Energy Density (BH)max:             318-342 KJ/m³  (40-43 MGOe)
Coercivity Force (Hcb):              ≥ 987 kA/m ( ≥ 12.4 kOe)
Intrinsic Coercivity Force (Hcj):    ≥ 1592 kA/m ( ≥ 20 kOe)
Maximum Operation Temperature: 150 °C
Delivery Time:           14-35 days

Technical Drawing