Bonded NdFeB ring magnet is mainly produced by molding compression of the NdFeB compound alloy powder with epoxy resin, and then shaped into a ring with molds,with the following characteristics:

1、Higher magnetic property: the magnetic property of bonded magnet is between that of sintered magnet and ferrite, with good consistency and stability;

2、High precision and freeness of magnet shape: the magnet shape and dimension can be guaranteed by the tooling, like ring, segment, block, etc., without further sintering and machining;

3、Good corrosion resistance: after Epoxy coating or special surface treatment, the magnet can be applied under normal or unfavorable environment conditions in a durable period;

4、Diverse magnetization: multi-pole, skew and radial magnetization can be available. The magnetic surface can be on the ID, OD and end surface or combined magnetization. The field distribution can be square, sinusoid, etc.

Bonded NdFeB ring magnet can be applied on all kinds of small and micro-motors, such as spindle motor, stepping motor, synchronous motor, DC motor and brushless DC motor, and it can also be used for sorts of sensors. It can replace some sintered NdFeB magnet and Ferrite, making motor assembling easier and more reliable, reducing cost and improving efficiency.

Our Bonded NdFeB ring magnets are all REACH and ROHS compliant and don’t contain any SVHC. It is produced according to ISO 9001 and ISO 14001 Quality Control Standards. PPAP, APQP, CPK/PPK, 8-D, CO, FTA are available. If you require a bespoke bonded NdFeB magnets or magnetic assembly, Technical Support or our bonded NdFeB Magnet Technical Data Sheet, please contact us. If you need a quotation for an existing magnet shape or a bespoke shape, please contact us. We offer a highly competitive price for your reference.

Typical Magnetic Performance for Bonded NdFeB magnet

Grade	Remanence		Coercive Force		Intrinsic Coercive		Max Energy		Density	Max. Working Temp.
	Br		Hcb		Hcj		BHmax		Density	Max. Working Temp.
	KGs	mT	KOe	KA/m	KOe	KA/m	KJ/m³	MGOe	g/cm³	℃
BN-2	2.5-4.5	250-450	2.0-3.5	160-280	4.5-8.0	360-640	16-32	2.0-4.0	4.8	160
BN-4	4.0-5.5	400-550	3.0-4.5	240-360	7.0-9.0	560-720	32-52	4.0-6.5	5.5	160
BN-6	5.0-6.0	500-600	4.0-5.0	320-400	7.0-9.0	560-720	48-60	6.0-7.5	5.8	160
BN-8	6.0-6.8	600-680	4.5-5.5	360-440	8.0-10.0	640-800	60-72	7.5-9.0	6.0	160
BN-8H	6.0-6.6	600-660	5.0-6.0	400-480	13.0-17.0	1040-1360	64-72	8.0-9.0	6.0	180
BN-8SR	6.2-6.8	620-680	5.0-6.0	400-480	10.0-14.0	800-1120	68-76	8.5-9.5	6.0	180
BN-8L	6.0-6.8	600-680	5.0-6.0	400-480	8.0-10.0	640-800	64-72	8.0-9.0	6.0	160
BN-10	6.8-7.3	680-730	5.0-6.0	400-480	8.0-10.0	640-840	76-84	9.5-10.5	6.0	160
BN-10H	7.0-7.5	700-750	5.5-6.5	440-520	9.0-10.5	640-840	80-88	10.0-11.0	6.2	160
BN-12	7.2-7.7	720-770	5.5-6.5	440-520	9.0-10.0	720-800	88-96	11.0-12.0	6.2	160
BN-12H	7.4-8.0	740-800	5.5-6.5	400-520	9.5-11.0	760-880	88-96	11.0-12.0	6.2	170
BN-12L	7.5-8.0	750-800	5.0-6.0	400-480	6.0-8.0	480-640	88-96	11.0-12.0	6.2	150
BN-13L	7.6-8.3	760-830	5.0-6.0	400-480	6.0-8.0	480-640	88-104	11.0-13.0	6.3	150

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