2 x 1/4 x 2 Inch Neodymium Rare Earth Ring Magnet N42 RY04Y0

RY04Y0 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.
  Magnetized Through Thickness
• Size: Size is the physical dimensions of the product using the standard unit of measure inches.
  2 x 0.25 x 2 Inch ( Diameter x ID x Thickness )
• Metric Size: Metric size is the physical dimensions of the product in metric millimeters.
  50.8 x 6.35 x 50.8 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.
  300.2 lb (136.17 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.
  300.2 lb (136.17 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.
  26.8182 oz (760.28 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

ground shipping only

The RY04Y0 is an incredibly powerful ring magnet. Useful for applications in which SUPER STRONG holding power is needed. They should only be purchased by individuals familiar with the proper handling of very large neodymium magnets. These rings are some of the most powerful magnets available, so plan your movements carefully.

As with any rare-earth magnet of this size, they can pinch very hard and cause great harm if they are not handled with care and respect. THESE ARE DANGEROUS!

You must read and understand our Neodymium Magnet Safety Page before ordering these magnets and agree to our Terms and Conditions prior to purchasing.

This size is also available diametrically magnetized as part number RY04Y0DIA.

GROUND SHIPPING ONLY on this item.