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Rare Earth Ring Magnets | Neodymium Rings | Permanent Magnets

Products Mode:
Material: Sintered Neodymium-Iron-Boron
Size: Customized
Sharpes: Disc, Cylinder, Block, Ring, Countersunk or custom
Grades: N33-52,33M-50M,30H-48H,30SH-45SH......
Coating: Ni,Ni-Cu-Ni,Zn,silver,gold,aluminum,epoxy......
Tolerance: +-0.05mm

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Product Description
Magnet Material:                    NdFeB or Neodymium Iron Boron
Magnet shape:                        Ring
Magnet grade:                        40M
Outer  diameter:                     72mm
Inner diameter:                       63mm
Thickness:                               8mm
Tolerance:                                +/-0.1mm (0.004”)
Coating:                                   Zinc plated
Operating Temp(Max).:          100℃
Direction of magnetization:   Magnetized through thickness
Other size and grade are available on request
Please send us email at if you can’t find what you are looking for.

Technical Info
➤Circular Powerful NdFeB Magnet Ring 40M OD72xID63x8mm

Material type:                    Permanent
Material composition:      Nd2Fe14B
Remanence (Br):               12.5– 13.1KGs
Coercive force(Hcb):        11.5KOe
Intrinsic Coercive Force( Hci ) : 14KOe
Max Energy (BH)max:      38 – 41MGOe
Max working temp. :        100℃
Curie Point (Max). :          212℉
Density :                            7.4~7.6g/cm3

Direction Of Magnetization

➤ Ring Magnet OD72x ID63x8mm Axially Magnetized

Axially Magnetized

➤ Other Options For Neodymium Ring Magnet.

Diametrically Magnetized

Multi-poles Axially