NdFeB Magnet Ring

  • Material : NdFeB or Neodymium Iron Boron
  • Shape of magnet: Ring
  • Grade of magnet: N42
  • Dimension: 18 x 15mm
  • Thickness: 2.5mm
  • Tolerance: +/-0.1mm
  • Plating : Black Epoxy Rsin
  • Operating Temp(Max).: 80℃ (176℉)
  • Maximum Br: 13400Guass
  • Application:suitable for Jewelry and healthy care
  • Other size and grade are available on request
N42 Grade  OD18 x ID15 x 2.5mm  Neodymium gold ring for jewelry

Grade of Neodymium Magnet                                 
N33   N35  N38  N40  N42  N45  N48  N50  N52         Working Temp. 80℃ (176℉)
33M   35M  38M  40M  42M  45M  48M  50M               Working Temp. 100℃ (212℉)
33H   35H  38H  40H  42H  45H  48H  50H                 Working Temp. 120℃ (248℉)
33SH  35SH  38SH  40SH  42SH  45SH                     Working Temp. 150℃(302℉)
30U   33UH  35UH  38UH  40UH  42UH                      Working Temp. 180℃ (356℉)
30EH  33EH  35EH  38EH  40EH                                Working Temp. 200℃ (392℉)
28AH  30AH  33AH                                                  Working Temp. 230° C (446℉)

Dimension range of Disc Magnet
Outer diameter:  2.0mm ~ 200mm
Inner diameter:   2.0mm ~ 80mm
Thickness :   1.0mm ~ 50mm

Tolerance of Neodymium Magnet
Standard tolerance : +/-0.1mm  (±0.004” )
Also stricter tolerance are possible if specially requested.

Surface coating of Neodymium Magnet
Nickle, Zinc, Ni-Cu-Ni, Silver, Gold, Black or Grey epoxy resin, Passivation, Parylene, Ni+Sn
Also provide special suface protection to neodymium magnet, Iron cover, Plastic coated,
Rubber coated

Packaging and Delivery
Packaging: Neutral box packaging, inner box , foam inside and other protection, to ensure
safely of transportation.
Delivery time: 8 ~ 20days, depend on customer’s order quantity.

How to order
1.Type of magnet and Grade
2.Shape and dimenion of Magnet
If possible, it’s better to send us a drawing or sketches.
3.Tolerance of Magnet
5.Direction of Magnetization
6.Surface coating (if any)
7.In case, you have no idea about the grade and surface coating, please tell us the following information:
7-1.What’s the product used for ?
7-2.Operating temperature and environment (dry. Humit, salt or others )

For more useful information,please feel free to contac us: sales@senmagnetics.com