What is the size range of the aluminum-nickel-cobalt magnet?

The size range of aluminum-nickel-cobalt (AlNiCo) magnets is diverse, covering a wide spectrum from miniature components to larger industrial-grade magnets, tailored to meet specific application requirements. Here is a detailed overview of the size range across different shapes:

1. Cylindrical Magnets

• Miniature Cylinders: AlNiCo magnets can be manufactured in extremely small cylindrical forms, such as Φ2mm × 2mm or Φ5mm × Φ2mm × 8mm. These miniature magnets are often used in precision instruments, sensors, and medical devices where space is limited, and high magnetic stability is required.
• Standard Cylinders: Common cylindrical sizes include diameters ranging from 10mm to 30mm or more, with lengths varying accordingly. For example, a cylindrical AlNiCo magnet might have dimensions of 10mm in diameter and 30mm in length, suitable for applications like magnetic separators or small electric motors.
• Large Cylinders: In industrial applications, larger cylindrical AlNiCo magnets can be produced with diameters exceeding 50mm and lengths of several centimeters. These magnets are used in heavy-duty equipment, such as generators and large-scale magnetic systems.

2. Ring (Annular) Magnets

• Small Rings: AlNiCo ring magnets can be as small as a few millimeters in outer diameter, with inner diameters and thicknesses tailored to specific needs. For instance, a small ring magnet might have an outer diameter of 15mm, an inner diameter of 5mm, and a thickness of 2mm, used in miniature speakers or magnetic couplings.
• Medium Rings: Common ring magnet sizes include outer diameters ranging from 20mm to 50mm, with inner diameters and thicknesses adjusted to achieve the desired magnetic field distribution. These magnets are widely used in electric motors, generators, and magnetic sensors.
• Large Rings: For industrial applications, AlNiCo ring magnets can be manufactured with outer diameters exceeding 100mm, providing a strong and uniform magnetic field over a large area. These magnets are used in large-scale magnetic systems, such as magnetic levitation trains and particle accelerators.

3. Disc Magnets

• Thin Discs: AlNiCo disc magnets can be produced in very thin forms, with diameters ranging from a few millimeters to several centimeters and thicknesses as low as 1mm or less. These thin disc magnets are used in applications where a strong magnetic field is required in a compact space, such as in magnetic switches or sensors.
• Standard Discs: Common disc magnet sizes include diameters from 10mm to 50mm or more, with thicknesses ranging from a few millimeters to several centimeters. These magnets are used in a variety of applications, including loudspeakers, magnetic clamps, and magnetic separators.
• Large Discs: For industrial applications, AlNiCo disc magnets can be manufactured with diameters exceeding 100mm, providing a large surface area for magnetic interaction. These magnets are used in large-scale magnetic systems, such as magnetic conveyors and magnetic lifting devices.

4. Bar and Rod Magnets

• Miniature Bars/Rods: AlNiCo bar and rod magnets can be produced in very small sizes, such as lengths of a few millimeters and diameters of 1mm or less. These miniature magnets are used in precision instruments, micro-motors, and medical devices.
• Standard Bars/Rods: Common bar and rod magnet sizes include lengths ranging from a few centimeters to several tens of centimeters, with diameters or cross-sectional dimensions tailored to the application. For example, a bar magnet might have a length of 50mm and a diameter of 10mm, used in magnetic separators or small electric motors.
• Large Bars/Rods: In industrial applications, AlNiCo bar and rod magnets can be manufactured with lengths exceeding 1 meter and diameters of several centimeters. These magnets are used in heavy-duty equipment, such as large generators and magnetic cranes.

5. Specialized Shapes

• Horseshoe Magnets: AlNiCo horseshoe magnets are designed with a U-shape to concentrate the magnetic field between the two poles. These magnets can be produced in various sizes, from small horseshoe magnets used in educational kits to large industrial-grade horseshoe magnets used in magnetic lifters and separators.
• Custom Shapes: AlNiCo magnets can also be manufactured in custom shapes to meet specific application requirements. For example, a custom-shaped AlNiCo magnet might be designed to fit into a unique space within a medical device or to interact with other components in a specific way in an aerospace application. The size and shape of these custom magnets are determined by the design and functional requirements of the application.