Dimension Ranges of Neodymium Magnets

ShapeSketchDimensions Low costDimensions Possible
Rectangular1L<50mm
W<50mm
T<35mm
L/W<5
L<240mm
(L2+W2)<57600mm
T<80mm
Axial Magnetized Cylinder2D<80mm
D/10<T<D/2
D<240mm
T<80mm
Diametrically Magnetized Cylinder3D<40mm
T<50mm
D<80mm
T<240mm
Axial Magnetized Ring4D<80mm
D/10<T<D/2
d>3mm
(D-d)>6mm
D<240mm
T<80mm
Diametrically Magnetized Ring5D<40mm
T<50mm
d>3mm
(D-d)>6mm
D<80mm
T<240mm
Radially Magnetized Ring6Free Cost for
Ready-Made Orientation Coils
D<60mm
d>10mm
4mm<(D-d)<16mm
T<40mm
Arc Segment
Magnetized Through Thickness
7L<50mm
H<50mm
T<35mm
L/H<3
L<220mm
(L2+H2)<50000mm
T<60mm
Arc Segment
Magnetized Through Height
8L<50mm
H<30mm
T<50mm
L/H<3
L<220mm
(L2+T2)<50000mm
H<60mm

Dimension Tolerance of Neodymium Magnets

Size RangeAfter SinteringAfter Machining
Perpendicular to the Pressing DirectionPressing DirectionSurface GrindingCylindrical GrindingWire CuttingCutting
≤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