This ferrite ring magnet has an outside diameter of 100mm, an inside diameter of 60mm and a thickness of 17mm. It has a pull force of 3.9kg and a Y30BH grade.
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.