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Magnets and magnet systems

Permanent magnetic materials

Samarium Cobalt-magnets - SmCo -

The manufacturing process for magnetic materials based on rare earths is very advanced. The raw materials are mixed in a protected environment and are ground so
that the mixture meets exacting tolerances.

Subsequently, the products are pressed and at the same time a powerful magnetic field is used to set the direction of the metallic particles. Finally, the products are sintered in special ovens either in a special mixture of gases. In view of the fact that the final product has a high degree
of hardness, the finishing operations are performed with machines equipped with diamond-tipped tools and special cooling techniques are employed.

To prevent unwanted oxidation, the finished products are supplied with a zinc-, nickel- or epoxy coating. Applications for these high-value magnetic materials can be found where a very high magnetic force is needed. Neodymium is far and away the most powerful magnetic material.

These materials are successfully used in places where, in spite of limited space, a powerful magnetic field has to be present (miniaturisation). Samarium Cobalt magnets are resistent against higher ambient temperatures (up to 250 ° C). Due to the special hardness of the material processing is only possible with diamond tools.

Dimensions and tolerances

Samarium Cobalt disc magnets (SmCo5)

Article no.	Ø	Tolerance	Height	Tolerance	Quality
	mm		mm
BM 88.302	2,0	+/-0,1	10,0	+/-0,1	BM18
BM 88.340	3,0	+/-0,1	2,0	+/-0,1	BM18
BM 88.303	3,0	+/-0,1	3,0	+/-0,1	BM18
BM 88.399/SM2	3,0	+/-0,1	7,0	+/-0,1	BM 24
BM 88.304	3,5	+/-0,1	1,0	+/-0,1	BM18
BM 88.305	4,0	+/-0,1	1,0	+/-0,1	BM18
BM 88.400	4,0	+/-0,1	1,5	+/-0,1	BM18
BM 88.306/C	4,0	+/-0,1	2,5	+/-0,1	BM24
BM 88.307	4,0	+/-0,1	3,0	+/-0,1	BM18
BM 88.307/SM2	4,0	+/-0,1	3,0	+/-0,1	BM24
BM 88.309	4,0	+/-0,1	5,0	+/-0,1	BM18
BM 88.309/SM2	4,0	+/-0,1	5,0	+/-0,1	BM24
BM 88.312	4,5	+/-0,1	1,0	+/-0,1	BM18
BM 88.313*	5,0	+/-0,1	1,0	+/-0,1	BM18
BM 88.314*	5,0	+/-0,1	1,2	+/-0,1	BM18
BM 88.315	5,0	+/-0,1	1,5	+/-0,1	BM18
BM 88.316	5,0	+/-0,1	2,0	+/-0,1	BM18
BM 88.316/SM2	5,0	+/-0,1	2,0	+/-0,1	BM22
BM 88.317	5,0	+/-0,1	2,5	+/-0,1	BM18
BM 88.320	5,0	+/-0,1	4,0	+/-0,1	BM18
BM 88.321	5,0	+/-0,1	5,0	+/-0,1	BM18
BM 88.329	6,0	+/-0,1	3,0	+/-0,1	BM18
BM 88.334	6,0	+/-0,1	6,0	+/-0,1	BM18
BM 88.336	6,0	+/-0,1	7,5	+/-0,1	BM18
BM 88.350	7,0	+/-0,1	3,0	+/-0,1	BM22
BM 88.347	7,0	+/-0,1	8,0	+/-0,1	BM18
BM 88.353	8,0	+/-0,1	5,0	+/-0,1	BM18
BM 88.355	9,0	+/-0,1	3,0	+/-0,1	BM18
BM 88.357	10,0	+/-0,1	1,5	+/-0,1	BM18
BM 88.360	10,0	+/-0,1	3,0	+/-0,1	BM18
BM 88.360/SM2	10,0	+/-0,1	3,0	+/-0,1	BM22
BM 88.362	10,0	+/-0,1	4,0	+/-0,1	BM18
BM 88.372	14,0	+/-0,1	4,0	+/-0,1	BM18
BM 88.375*	14,0	+/-0,1	7,5	+/-0,1	BM18
BM 88.378/SM2	15,0	+/-0,1	5,0	+/-0,1	BM24
BM 88.379	15,0	+/-0,1	8,0	+/-0,1	BM18
BM 88.380**	15,9	+/-0,1	4,0	+/-0,1	BM24
BM 88.385/SM2	22,0	+/-0,1	10,0	+/-0,1	BM24

Samarium Cobalt block magnets (SmCo5)

Article no.	Length	Tolerance	Width	Tolerance	Height	Tolerance	Quality
	mm		mm		mm
BM 88.603	4,0	+/-0,1	4,0	+/-0,1	2,0	+/-0,1	BM18
BM 88.604	5,0	+/-0,1	5,0	+/-0,1	1,5	+/-0,1	BM18
BM 88.605	5,0	+/-0,1	5,0	+/-0,1	3,0	+/-0,1	BM18
BM 88.616	13,0	+/-0,1	7,0	+/-0,1	2,5	+/-0,1	BM18
BM 88.622	18,5	+/-0,1	8,3	+/-0,1	4,3	+/-0,1	BM18
BM 88.627	30,0	+/-0,1	10,0	+/-0,1	6,0	+/-0,1	BM18
BM 88.628*	32,0	+/-0,1	27,0	+/-0,1	6,0	+/-0,1	BM18

Other dimensions on request.

Magnetisng methods and technical specifications you find here

Magnets and magnet systems

Permanent magnetic materials

Beloh Magnetsysteme GmbH & Co. KG