Pot magnet is essentially a type of magnets that are encased within a steel shell, allowing them to concentrate the magnetic field to create strong attractive force. It’s a magnet system that embedded powerful NdFeB magnets or Ferrite magnets into a durable steel cup or channel. It’s also named as a cup magnet or mounting magnet, holding the magnet. Pot magnets have an open magnetic circuit which can be made linear or channeled in certain shapes. Pot magnets are usually used for clamping, gripping and fixing components together since their magnetic force can provide maximum attraction power to metallic objects. Pot magnets are mainly classified into three categories: bar pot, dish-shaped pot, and ring pot depending on structural shape.
These products come in various sizes to fit different applications. Some common characteristics among pot magnet include having an open magnetic circuit, encased in steel shells, and high holding value. They are commonly used to hold and secure work pieces together and avoid the hazards of mechanical fasteners or locating pins. Pot magnets can also be used to maintain alignment between parts while allowing for minor adjustments of assembly. Pot magnets were first invented by General Electric’s back in 1966 and they have become one of the most popular choices among industrial uses because of their ability to attract ferromagnetic objects such as iron.
Magnets come in different forms with various degrees magnetism strength. Pot magnets are stronger than disk shaped magnets, but weaker than rod-shaped ones. Pot magnets usually possess a concave surface (bowl shape) which is made by cutting an alloy sheet into a certain size and shaping it in a high-powered press.
Pot magnet has the characteristics of small size and large pull strength. When attached vertically on the surface of the material, the power can be maximized. The actual pull force achieved is dependent on the surface that is being clamped onto, its quality, its size, etc. There are many applications for NdFeB Pot Magnets, mainly in applications where a strong clamping force is required. Applications include point of sale, window dressing, door/cupboard and gate clamps, false ceiling clamps, signs and banners, torque limited seals, jigs and fixtures, lighting holders, marketing and exhibition displays, retrieval magnets, industrial fixings, etc.