The Ø20x5mm round neodymium magnets are with 4.2mm through holes, they are named neodymium ring magnets. All grade from N35-N52 are provided for neodymium ring magnets Ø20xØ4.2x5mm, and the grade of N45 pull about 7.2kg. Nickel is the most common coating for ring magnets. We supply Ø20xØ4.2x5mm rare earth strong neodymium ring magnets with plastic spacers. Special package demands can be provided, and a cheaper price is available for bulk orders. Contact BeiLun Meank, your reliable neodymium ring magnets factory, now!
Remanence (Br): 13200 to 13800 Gs for N45 neodymium ring magnets Ø20xØ4.2x5mm.
Coercivity (Hcj): ≥955 KA/m for neodymium ring magnets of N45.
Magnetic Energy Product (BHmax): 43 to 46 MGOe for N45 ring neodymium magnets.
Max.Working Temp.: ≤80℃.
Common Coating: Nickel, Zinc, Epoxy, Teflon.
Outer Diameter (OD)
Internal Diameter (ID)
approx. 7.2 kg
Weight (1 piece)
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