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Dimension Ranges of Neodymium Magnets
| Shape | Sketch | Dimensions Low cost | Dimensions Possible |
|---|---|---|---|
| Rectangular |  | L<50mm W<50mm T<35mm L/W<5 | L<240mm (L2+W2)<57600mm T<80mm |
| Axial Magnetized Cylinder |  | D<80mm D/10<T<D/2 | D<240mm T<80mm |
| Diametrically Magnetized Cylinder |  | D<40mm T<50mm | D<80mm T<240mm |
| Axial Magnetized Ring |  | D<80mm D/10<T<D/2 d>3mm (D-d)>6mm | D<240mm T<80mm |
| Diametrically Magnetized Ring |  | D<40mm T<50mm d>3mm (D-d)>6mm | D<80mm T<240mm |
| Radially Magnetized Ring |  | Free Cost for Ready-Made Orientation Coils | D<60mm d>10mm 4mm<(D-d)<16mm T<40mm |
| Arc Segment Magnetized Through Thickness |  | L<50mm H<50mm T<35mm L/H<3 | L<220mm (L2+H2)<50000mm T<60mm |
| Arc Segment Magnetized Through Height |  | L<50mm H<30mm T<50mm L/H<3 | L<220mm (L2+T2)<50000mm H<60mm |
Dimension Tolerance of Neodymium Magnets
| Size Range | After Sintering | After Machining | ||||
| Perpendicular to the Pressing Direction | Pressing Direction | Surface Grinding | Cylindrical Grinding | Wire Cutting | Cutting | |
| ≤10 | ±0.20 | ±0.30 | ±0.05 | ±0.05 | ±0.03 | ±0.03 |
| 10 ~ 20 | ±0.30 | ±0.40 | ±0.05 | ±0.08 | ±0.05 | ±0.05 |
| 20 ~ 50 | ±0.50 | ±0.65 | ±0.10 | ±0.13 | ±0.08 | ±0.10 |
| 50 ~ 80 | ±1.00 | ±1.10 | ±0.15 | ±0.20 | ±0.13 | ±0.15 |