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SuperMagnetMan Neodymium Ring Magnet.  Used as medical magnets, motor magnets, sensor magnets, consumer electronics magnets.  These ring magnets are strong rare earth neodymium magnets also used as automotive magnets.

0.157" (4mm) OD x 0.079" (2mm) ID x 0.039" (1mm) thick, N45 Rare Earth Neodymium Ring Magnet, magnetized across diameter. Not Plated.

Minimum Order Quantity (MOQ) = 15 pcs

Common Applications:  Motors, medical devices, automotive, robotics, sensors, consumer electronics.

About Small Ring Magnets:  Defined with an outside diameter (OD) equal to or less than 0.250” (6.35mm).  The outer diameter (OD), inner diameter (ID), and thickness will determine the reach and profile of the magnetic field and performance of the ring magnets.

Direction of Magnetization (DOM):  Ring Magnets are manufactured so the DOM is set during the manufacturing process and cannot be changed.  Available options for DOM that can be produced during manufacturing:

  1. Through the thickness
  2. Across the diameter
  3. Multiple poles on the face of the magnet
  4. Radially magnetized, with a single pole or multiple pole on the OD and ID

Magnetic Grades:  To view a table of grades and specs, see our Neodymium Magnet Grades & Specs

View Characteristics of Magnet Coatings for information on all our coating options.

Custom Magnets:  Need custom Ring Magnets?  Use one of the below methods to contact a magnetics specialist about your application.

Online Custom Magnet Request Form or Contact Us

Safe Magnet Practices:  Neodymium Magnets are a valuable resource to engineers, innovators, product designers and DIY professionals.  Always practice safe handling and keep away from children at all times.


Regular price
Inside Diameter0.079" (2mm)
Max Working Temp80°C
Outside Diameter0.157" (4mm)
Plating/CoatingNot Plated
StrengthNeodymium 45
Thickness0.039" (1 mm)
Direction of Magnetism Across the diameter