for a project
The magnets served the original purpose of a project that wasn't what it was cracked up to be ( skeptically).
Product code: 13019
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This ferrite ring magnet has an outside diameter of 80mm, an inside diameter of 40mm and a thickness of 15mm. It has a pull force of 3.4kg and a Y30BH grade. It is identified by the Amf magnets part number 13019.
Our ferrite ring magnets are often used in loudspeakers and also in resonance imaging and torque drives. One popular application for children is the fishing game, tied on a piece of string to pick up pins and needles. The ferrite rings offer reduced magnetic strength, due to the hole, but the inexpensive pricing makes them a firm favourite. Some applications are: holding, door closures, joinery, light fixture.
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The Pull Force listed for each magnet is based on lifting 10mm thick steel from a horizontal surface. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around only 30% of the pull force listed in the product description. This is due to the effects of gravity and the lack of friction between the surface and the shiny magnet. Read More