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2 x 1 x 1/4 Inch Neodymium Rare Earth Ring Magnet N42
2 x 1 x 1/4 Inch Neodymium Rare Earth Ring Magnet N42 --thumbnail-12 x 1 x 1/4 Inch Neodymium Rare Earth Ring Magnet N42 --thumbnail-2
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2 x 1 x 1/4 Inch Neodymium Rare Earth Ring Magnet N42 RY0X04

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Price ea.QtyDiscount
$20.17 1
$19.7322% Off
$19.273-44% Off
$18.835-97% Off
$18.3810-249% Off
$17.9325-4911% Off
$17.4850-9913% Off
$17.04100-24916% Off
$16.58250-49918% Off
$16.14500-99920% Off
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RY0X04 Specifications

  • Dimensions: This shows the name of each dimension and how it is measured in the image.
  • Magnetization Direction: The direction through which the magnet is magnetized. See our Magnetization Directions page for more details.
    Magnetization direction icon Magnetized Through Thickness
  • Size: Size is the physical dimensions of the product using the standard unit of measure inches.
    2 x 1 x 0.25 Inch ( Diameter x ID x Thickness )
  • Metric Size: Metric size is the physical dimensions of the product in metric millimeters.
    50.8 x 25.4 x 6.35 mm ( Diameter x ID x Thickness )
  • Pull Force 1: Pull force case 1 represents a magnet attracting to a thick steel plate. Learn more about Magnet Pull Force Case 1.
    39.61 lb (17.97 kg)
  • Pull Force 2: Pull force case 2 represents a magnet attracting to a thick steel plate on both sides. Learn more about Magnet Pull Force Case 2.
    158.3 lb (71.8 kg)
  • Grade:
    Grade N

    Min: -238°F (-150°C) Max: 176°F (80°C)

    Hover over grades for temp info:
    • N
    • NM
    • NH
    • NSH
    • NUH
    • NEH
    • NAH
    N42
  • Max Operating Temp: Maximum operating temperature, also known as maximum service temperature, is the temperature at which the magnet may be exposed to continuously with no significant long-range instability or structural changes. Learn more in our Temperature and Neodymium Magnets article.
    176°F (80°C)
  • Material: This lists the name of the material each product is composed of.
    Neodymium (NdFeb)
  • BH Max: BH max is the Maximum Energy Product at the point on the B/H Curve that has the most strength, expressed in MGOe (MegaGaussOersteds). When describing the grade of a neodymium magnet, this number is commonly referred to as the "N" number, as in Grade N52 magnets. Learn more about Bh max in our glossary.
    42 MGOe
  • Tolerances: Dimensional tolerance specifies the allowed leeway for variations in manufacturing.
    ±0.004 in (.1mm)
  • Coating: Most neodymium magnets are plated or coated in order to protect the magnet material from corrosion. Check out our Custom Magnets for unplated magnets and other coatings not stocked for this size magnet. Learn more about all available platings and coating in our What Magnet Coating Should I Use? article.
    Nickel-Copper-Nickel (Ni-Cu-Ni)
  • Weight: This is the weight of a single magnet in ounces and grams. Variety packs (with mixed sizes) show the overall weight.
    2.5541 oz (72.41 g)
  • Br Max: Br max is also called "Residual Flux Density" and is when the magnetic induction remaining in a saturated magnetic material after the magnetizing field has been removed. This is the point at which the hysteresis loop crosses the B axis at zero magnetizing force, and represents the maximum flux output from the given magnet material. By definition, this point occurs at zero air gap, and therefore cannot be seen in practical use of magnet materials. Learn more about Br max in our glossary.
    13,200 Gauss
  • Color: The color of the coating or plating on the product.
    Silver

Product Description

The ry0x04 is a very powerful ring magnet measuring 2" in diameter, 1" ID, and 1/4" thick. It is magnetized through the thickness and coated with nickel-copper-nickel plating that provides a smooth, durable surface and helps protect the magnet from corrosion. Made from N42 neodymium grade material, this magnet has a 39.61 lb pull force and a max operating temperature of 176°F (80°C).

The ry0x04 rare earth neodymium ring magnet is well suited for engineers, manufacturers, fabricators, researchers, and experienced makers working on demanding magnetic and mechanical systems. Common applications include industrial equipment, heavy-duty fixtures, magnetic bearing systems, large rotating assemblies, material positioning, custom machinery, test equipment, and high-force magnetic experiments. It can also be incorporated into specialized mechanisms, arranged in opposing configurations for strong repulsion experiments, or used in assemblies that require substantial magnetic interaction around a central shaft, tube, or other component.

Common Applications

  • Heavy-Duty Magnetic Holding - Creating high-strength magnetic holding systems where substantial attachment force is required.
  • High-Force Magnetic Bearings - Building experimental bearing systems that use powerful attraction or repulsion between ring magnets.
  • Large Rotating Systems - Incorporating powerful magnets around substantial shafts, hubs, spindles, and rotating components.
  • Industrial Machinery - Integrating strong magnetic components into custom machines, mechanisms, and production equipment.
  • Heavy Jigs & Fixtures - Creating robust fixtures, stops, locating devices, and workholding systems for ferrous parts.
  • Magnetic Coupling Experiments - Testing non-contact transfer of force or motion between magnetically coupled components.
  • High-Force Repulsion Systems - Arranging opposing magnetic poles to produce strong repulsive forces in experimental mechanisms.
  • Custom Tooling - Incorporating powerful magnetic holding into specialized tools, manufacturing aids, and production setups.
  • Research & Testing - Evaluating magnetic forces, spacing, attraction, repulsion, and mechanical behavior in laboratory and engineering experiments.
  • Specialized Mechanical Systems - Building custom assemblies that require substantial magnetic force around a central opening.

Product Features

  • Exceptional Magnetic Strength - Powerful neodymium construction provides substantial magnetic force for demanding applications.
  • Large Center Opening - Wide center hole provides generous clearance while retaining a substantial amount of magnetic material.
  • Axial Magnetization - North and south poles are located on the opposing flat faces of the ring.
  • Strong Face-to-Face Attraction - Large opposing pole faces create powerful attraction when properly paired with another compatible magnet.
  • Powerful Magnetic Repulsion - Opposing like poles can generate substantial repulsive force when ring magnets are properly aligned.
  • Concentric Ring Geometry - Uniform inner and outer diameters maintain consistent geometry around the center axis.
  • Stackable Design - Flat, parallel faces allow multiple ring magnets to be stacked while maintaining a common center opening.
  • High Strength-to-Size Ratio - Neodymium construction provides exceptional magnetic performance relative to the magnet's overall size.
  • Permanent Magnet - Remains magnetized without requiring electricity, batteries, or an external power source.
  • Rare Earth Neodymium Magnet - The strongest type of permanent magnet available, providing exceptional strength for its size.

RY0X04 Technical Data

  • Pull Force Case 1: Distance strength chart for magnet attracting to a thick steel plate. View Chart
  • Pull Force Case 2: Distance strength chart for magnet between two thick pieces of steel plate. View Chart
  • Pull Force Case 3: Distance strength chart for two identical magnets attracting to each other. View Chart
  • Pull Force Case 4: Distance strength chart for two identical magnets repelling each other. View Chart
  • Magnetic Field: FEA magnetic field line diagram. View Chart
  • Bh Curves: Bh demagnetization curve data. View Chart

RY0X04 Spec & Certificate Downloads

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