Have a magnet problem, welcome to the courage magnet manufacturers magnet FAQ column, there are a lot of questions and answers about magnets, may be helpful to you, today's topic is what is a hollow cup magnet? characteristics of hollow cup magnet, magnetization direction, installation position.
Hollow cup magnet description;
Hollow cup magnet, with a hollow cup structure in the middle, is cylindrical in shape, also known as a hollow cylindrical (rod) magnet. The material is mainly neodymium iron boron, with radial magnetization. This design makes the outer side of the magnet highly magnetic, mainly used for hollow cup motors, magnetic induction sensors, motor components, etc.
Hollow cup cylindrical rod magnets
Magnetization direction of hollow cup magnet;
1, thickness magnetization (axial magnetization) : in the direction of thickness magnetization, the polarity of the magnetic field extends from one side of the magnet to the other side. That is, the magnetic field line is parallel to the thickness of the magnet.
2, diameter magnetization (radial magnetization) : in the direction of diameter magnetization, the polarity of the magnetic field extends outward from the center of the magnet. That is, the magnetic field line is parallel to the diameter direction of the magnet.
Where are the hollow cup magnets installed?
Hollow cup magnets can be installed in multiple positions, depending on the specific application requirements.
In the motor, the hollow cup motor magnet is installed in the central part of the motor rotor. When the motor is energized, the magnetic field generated by the current excitation of the motor winding interacts with the magnetic field of the hollow cup motor magnet to produce electromagnetic force and torque. Due to the special structure of the hollow cup magnet, the magnetic field is mainly concentrated on one side of the cup, forming a powerful magnetic pole.
The hollow cup magnet can be installed in a magnetic sensor to detect and measure changes in the magnetic field. The sensor can be installed on or around the hollow cup magnet in order to receive the effect of the magnetic field and convert it to the corresponding electrical signal.
In some electromagnetic relays and magnetic contactors, hollow cup magnets can be installed on the electromagnetic coil, generating a strong magnetic field to achieve the switching function of the relay.
These are some introductions about hollow cup magnets, which are provided by neodymium magnet manufacturer courage magnet. If you need high-precision, high-strength magnetic hollow cup (cylindrical) rare earth Neodymium magnet can provide specifications for our company to quote for you.
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