Dimensional Tolerance (±)

Neodymium & Samarium Cobalt Magnet Dimensional Tolerance

Standard products	External diameter D/OD	Internal diameter ID	Length L	Width W	Height H
< 5mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm
< 10mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm
< 20mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm
< 50mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm	±0.1mm
<100mm	±0.15mm	±0.15mm	±0.15mm	±0.15mm	±0.15mm
>100mm	±0.2mm	±0.2mm	±0.2mm	±0.2mm	±0.2mm

 

Custom made products	External diameter D/OD	Internal diameter ID	Length L	Width W	Height H
< 5mm	±0.05mm	±0.05mm	±0.05mm	±0.05mm	±0.05mm
< 10mm	±0.05mm	±0.05mm	±0.05mm	±0.05mm	±0.05mm
< 20mm	±0.05mm	±0.05mm	±0.05mm	±0.05mm	±0.05mm

 

Ferrite Magnet Dimensional Tolerance

All Shapes

± 2%

Measurements that can be produced for Neodymium Magnets

The dimensions available for neodymium magnets depend on the material grade. Currently, the maximum achievable length is 150mm. However, due to facility limitations, it may not be possible to produce larger items using materials outside of grade No. 35.

Round shape	D Diameter	H Height/T Thickness	Magnetization direction
Maximum	200mm	30mm	height H/diameter D
Minimum	1mm	0.5mm	height H/diameter D

 

Ring shape	OD External diameter	ID Internal diameter	H Height/T Thickness	Magnetization direction
Maximum1	200mm	180mm	40mm	Height H
Maximum2	90mm	70mm	80mm	Diameter D
Minimum	3mm	1mm	1mm	Height H/Diameter D

Square shape	L Length	W Width	H Height/T Thickness	Magnetization direction
Maximum1	245mm	80mm	40mm	Height H
Maximum2	150mm	100mm	44mm	Height H
Minimum	1mm	1mm	1mm	Height H

Measurements that can be produced for samarium-cobalt magnets

The measurements that can be produced will depend on the grade of the material. Currently, the maximum possible length is 150mm.

Round shape	D Diameter	H Height/T Thickness	Magnetization direction
Maximum	100mm	100mm	Height H/Diameter D
Minimum	1mm	0.5mm	Height H/Diameter D

 

Ring shape	OD External diameter	ID Internal diameter	H Height/T Thickness	Magnetization direction
Maximum	100mm	80mm	60mm	Height H/Diameter D
Minimum	1.2mm	0.5mm	0.5mm	Height H/Diameter D

 

Square shape	L Length	W Width	H Height/T Thickness	Magnetization direction
Maximum	200mm	100mm	120mm	Height H
Minimum	1mm	1mm	0.5mm	Height H

 

Measurements that can be produced for ferrite magnets

Round shape	D Diameter	H Height/T Thickness	Magnetization direction
Maximum	181mm	5mm-29mm	Height H
Minimum	6mm	2mm	Height H/Diameter D

 

Ring shape	OD External diameter	ID Internal diameter	H Height/T Thickness	Magnetization direction
Maximum	400mm	240mm	5mm-25mm	Height H
Minimum	18mm	1.4mm	3mm	Height H/Diameter D

 

Square shape	L Length	W Width	H Height/T Thickness	Magnetization direction
Maximum	6"(152.4mm)	4"(101.6mm)	1"(25.4mm)	Height H
Minimum	2mm	2mm	2mm	Height H