Neodymium Countersunk Magnets
Countersunk Magnets, also known as Round Base, Round Cup, Cup or RB magnets, are powerful mounting magnets, built with neodymium magnets in a steel cup with a 90° countersunk hole on the working surface to accommodate a standard flat-head screw. The screw head sits flush or slightly below the surface when affixed to your product.
- The magnetic holding force is focused on the working surface and is significantly stronger than an individual magnet. The non-working surface is very little or no magnetic force.
- Constructed with N42 Neodymium magnets encased in a steel cup, plated with a triple-layer of Nickel-Copper-Nickel (Ni-Cu-Ni) for maximum protection against corrosion & oxidation.
- Neodymium cup magnets are used for any application where high-magnetic strength is required. They are ideal for lifting, holding & positioning, and mounting applications for indicators, lights, lamps, antennas, inspection equipment, furniture repair, gate latches, closing mechanisms, machinery, vehicles & more.
The approximate pull info listed for Neodymium Cup Magnets is for reference only. These values are measured under the test conditions where the magnet is attached to a flat, ground 1/2" thick mild steel plate. Coatings, rust, rough surfaces, and certain other environmental conditions can significantly reduce the pull force. Please be sure to test the pull in your actual application. For critical applications, it is suggested that the pull be de-rated by a factor of 2 or more, depending on the severity of a potential failure. top
Standard tolerances are +/- 0.005" on both diameter and thickness dimensions. top
Aside from the standard models listed above, we can custom manufacture neodymium magnets to your exact specifications. Contact us or send us a request for quote for questions regarding your specialty project. For more technical applications, our sister company, Integrated Magnetics specializes in manufacturing and building custom magnets & magnetic assemblies. top