All Categories

Home > BLOG > What are Neodymium pot magnets?

What are Neodymium pot magnets?

September 26,2022

These are magnets, with neodymium – the strongest permanent magnet – embedded within a steel casing or shell. In turn, the steel is coated with a coating of nickel, copper, and nickel again. It is also called a cup magnet, deep magnet, or mounting magnet.

A common feature of neodymium pot magnets (and pot magnets in general) is that only one end is magnetised while the other end is left. As you will soon discover, this characteristic is very important and is largely responsible for some of its properties.

Due to their insane strength, these magnets are used for holding or mounting heavy objects, separation, lifting, clamping, and many more.
We have other products,for example, sintered NdFeB magnets and bonded NdFeB magnets ,etc.

How do Neodymium pot magnets work?

Usually the magnetic flux is distributed around the magnet when it is attached to a ferromagnetic material. Hence, the magnetic power is distributed across two ends: the north and south poles.
In the case of pot magnets, it is different.

The steel casing creates a closed magnetic circuit when the magnet is attached to a ferromagnetic material, with the magnetic flux directed towards only one surface vertically to the ferromagnetic surface. This provides for maximum magnetic power on the magnetised end. The magnetic strength is very strong. In addition, the north pole is located at the centre of the magnet while the south pole is on the surface of the steel casing.

Properties of neodymium magnets

The Curie temperature is between 80-150 degrees celsius. For applications involving temperature above 150 degrees celsius.

Neodymium pot magnets tend to depreciate in magnetic strength with an increase in temperature.

They have a large clamping force.
Neodymium pot magnets are axially magnetised.
One surface is magnetised while the other surface is left like that.
They have a huge pull force.

Types of neodymium pot magnets
Countersunk neodymium pot magne

These neodymium pot magnets have a countersunk hole at the magnetic surface which tapers. The hole attaches the magnet to non-ferromagnetic surfaces via screws.

Internal threaded pot magnet

These magnets have a hole at the centre, threaded spirally on the inside wall of the hole.
Through hole neodymium pot magnets.

A hole goes through the magnet. The hole is known as a boss. It is used to attach to non ferromagnetic items with a bolt.
Bipole magnets

There’s a magnet centrally located and bordered on each side by a steel pole.
It is far stronger than normal magnet.
Neodymium pot magnet with Hook

Neodymium pot magnet with eyelet

Rubber coated neodymium pot magnets

Applications of neodymium pot magnets
They are used to hold things in place. For instance, if you want to hang your mug on a ferromagnetic surface, internal threaded pot magnets can come in handy.

Holding light in place
This is especially visible in supermarkets. Internally threaded neodymium pot magnets are used to hold down light to the ceiling.
Door stops
Pot magnets can be used as a door stopper.
Retrieval magnets
Pop displays
Exhibition display light.
Gripping components together
Hobby and leisure
Fishing for lost objects