Sintered NdFeB strong magnets size marking format by shape.NdFeB magnets can be divided into round, square, shaped, tile and other types according to the shape, and the size expression of different types of NdFeB magnets is different, many customers don't know much about the size unit marking of NdFeB magnets, the following is a summary of the knowledge about the size marking of NdFeB magnets.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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One. Round NdFeB.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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The size of NdFeB magnet is generally indicated by D as the diameter (because it is a special symbol, most people use D instead of Φ),SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
For example, D10*2MM is a magnet with diameter of 10mm and thickness of 2mm.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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II. Circular NdFeB.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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Round ring generally D means external diameter, d means internal diameter, H means thickness (height)SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
For example: D15×d5×2mm means the outer diameter is 15mm, the inner diameter is 5mm, and the height is 2mm.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
The height is also called the thickness.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
The current circle is also divided into straight and countersunk holes, straight holes are punched vertically into the hole, while countersunk holes are divided into large and small holes and large hole depth and small hole depth is commonly known as the screw hole.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
Note: All units are millimeters, D is the diameter, M is the diameter of the countersunk hole.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
For example: the round piece with countersunk holes marked OD * ID * thickness such as D10 * M5 * 2.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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III. Square NdFeB.
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Square size means length (l) x width (w) x height (H), generally use F to indicate square.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
For example: F8×4×2mm, it means the rectangle magnet is 8mm long, 4mm wide, 2mm thick (height), generally the default last number means the magnetization direction, F8×4×2mm square magnet, the magnetization direction is the direction of 2, that is, the thickness (height) direction magnetization. n, s that is, in the two most large side, that is, 8×4mm face, one side is the N pole, the other side is the S pole.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
The square is marked with length*width*height such as 10*10*10SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
Square block with holes marked L*W*H*Aperture such as 10*10*10*D5SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
Square with countersunk hole marked L*W*H*Aperture such as 10*10*10*M5SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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IV. Tile shaped NdFeB.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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Tile magnet needs outer radius R1 and inner radius R2, arc and width, default magnetic surface is arc inside and outside.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
Tile format: R outer arc*r inner arc*W chord width*L axis length*H arch height*T wall thicknessSourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
For example: R35.5×25×26×4SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
Magnetic tile radius of arc 35.5mm, height 25mm, width (span) 26mm, thickness 4mm.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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V. Spherical NdFeB.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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The simple diameter D indicates. For example, D5MM indicates the magnetic sphere whose diameter is 5 mm.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
The above content is about the various shapes of NdFeB magnet logo expression, hope it will be helpful to you.SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
SourceRare earth magnet-https://www.rare-earthmagnet.com/sintered-ndfeb-strong-magnets-size/
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