China Neodymium And Ferrite Magnets Manufacturer & Supplier 
There are many common types of 25mm neodymium magnets, mainly differing in shape. Below is a detailed introduction to the common types of 25mm neodymium magnets and recommendations for selection.
Common shapes and applications of 25mm neodymium magnets
Circular/Disc/Round: Diameter is 25mm, with common thicknesses ranging from 1-5mm. Over 99% of customers opt for axial magnetization. Primarily used in magnetic bases and magnetic hooks.
Sample: 1 inch neodymium round magnets dia 25mm x thick 2mm
25mm diameter circular rare earth neodymium magnets
Cylindrical/Rod: Diameter is 25mm, with larger thicknesses (e.g., 25x25mm). Axial and radial magnetization each account for approximately half of applications. Commonly used in experiments, industry, and mechanical equipment.
Ring shaped (with holes): Outer diameter 25mm, central hole 5mm-10mm (can be a screw hole or straight hole), thickness 1mm-5mm. Primarily used in mechanical fixed installation scenarios, such as straight holes for through bolts and countersunk holes for flat-head screws, with a flat surface after installation.
Sample: Finger ring strong neodymium magnet 25mm x 20mm x 2mm 25mm diameter countersunk strong magnet 25x10 hole 6mm
Square: Side length 25mm, typical thickness 1-5mm, commonly used in magnetic boards and mechanical equipment, with holes that can be machined into the surface.
Sample: 1 inch square magnet for sale 25mm x 25mm x 12.5mm
Block/bar：Length 25mm. Typical dimensions include 25x2x2mm, 25x3x3mm, 25x5x2mm, and 25x10x5mm. Suitable for various magnetic components, such as luggage, lighting fixtures, and motors for balance bikes/tilt bikes/electric vehicles.
25mm rectangular block strong magnets
Related products: Strong Oval Magnets with Gold Coating 25x5x2.5mm
Arc shaped: Width 25mm, suitable for stator/rotor arc-shaped tracks, primarily used in motors and magnetic couplers, typically selecting H grade or above.
Pot-shaped: The outer diameter, including the impact-resistant iron shell, is 25mm, with the actual magnet size slightly smaller. Primarily used for industrial adhesion and fixture positioning, such as adhering to advertising signs, exhibition stands, lighting equipment, and other temporary/portable structures. Can be equipped with bolts, lifting rings, or hooks.
Case: 25mm x 8mm non-hole suction cup neodymium pot magnets
25mm Neodymium Magnet Selection Recommendations
If you only need simple adhesion, universal size, and cost-effectiveness, disc magnets are the first choice. Square magnets have corner structures suitable for alignment and are easy to attach to flat surfaces. Rectangular magnets are longer than square magnets and are suitable for embedding in narrow structures. If you need to pass through screws or shafts, choose ring magnets. If you need to attach to a circular shape, such as a motor housing, choose arc-shaped magnets. For applications requiring lifting, hanging, repeated disassembly/assembly, or impact resistance, pot magnets are recommended.
The above is an introduction to 25mm neodymium magnets. Users can choose the appropriate performance grade, coating, and shape according to their application. If you need help, please feel free to send us an inquiry.
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