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Ningbo Yuxiang Magnetics Co., Ltd.

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ring sintered rare earth ndfeb strong magnet

Place of Origin:	Zhejiang,China (Mainland)
Application:	Speaker Magnet
Shape:	Others
Type:	Permanent
Composite:	Neodymium Magnet
Brand Name:	Yuxiang magnetics
Material:	neodymium magnet
Fuction:	NdFeB ring magnet is mainly used in loudspeakers.

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ring sintered rare earth ndfeb strong magnet

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ring sintered rare earth ndfeb strong magnet Description

Payment & Shipping Terms
Unit Price:	0.01~10.0 USD
Payment Term:	T/T,L/C,WU
MOQ:	10 Piece/Pieces
Means of Transport:	By Air/ By Sea/ By...

Supply Capacity
Production Capacity:	100ton/month
Packing:	standard Air package...
Delivery Date:	7-15 days

1. This is sintered NdFeB magnet, it is the most powerful and strongest magnet in World at present.
2. The ring magnet is one regular and popular shape of the sintered NdFeB magent.
3. it can be used in many different fields.
And it is mainly used in loudspeaker. The fast development in loudspeakers, earthphone or other audio equipment require very high energy neo magnet which has stable performance at high temperature. Our SH grade ring magnets are proved to be the one of best choices.

4. As for high bonding power requirements for the magnets in assemblying to loudspeaker parts, surface tension of the coating is critical for magnet choice. Our trivalent chrome Zinc coating on neo magnets provide high surface tension and it is surely of environmental protection.


Magnetic Characteristics And Physical Properties of Sintered NdFeB
Properties	Remanence	Coercive Force	Intrinsic Coercive Force	Max Energy Product	Max Working Temp
	Br	Hcb	Hcj	(BH)max	Tw
Grade	mT(KGs)	KA/m (KGs)	KA/m (KOe)	KJ/m 3 ( MGOe )	℃
N-30	1080-1130	≥ 796	≥ 955	223-247	≤ 80
N-30	(10.8-11.3)	( ≥ 10)	( ≥ 12)	(28-31)	≤ 80
N-33	1130-1180	≥ 836	≥ 955	247-270	≤ 80
N-33	(11.3-11.8)	( ≥ 10.5)	( ≥ 12)	(31-34)	≤ 80
N-35	1170-1220	≥ 868	≥ 955	263-287	≤ 80
N-35	(11.7-12.2)	( ≥ 10.9)	( ≥ 12)	(33-36)	≤ 80
N-38	1220-1250	≥ 899	≥ 955	287-310	≤ 80
N-38	(12.2-12.5)	( ≥ 11.3)	( ≥ 12)	(36-39)	≤ 80
N-40	1250-1280	≥ 923	≥ 955	302-326	≤ 80
N-40	(12.5-12.8)	( ≥ 11.6)	( ≥ 12)	(38-41)	≤ 80
N-42	1280-1320	≥ 923	≥ 955	318-342	≤ 80
N-42	(12.8-13.2)	( ≥ 11.6)	( ≥ 12)	(40-43)	≤ 80
N-45	1320-1380	≥ 876	≥ 955	342-366	≤ 80
N-45	(13.2-13.8)	( ≥ 11.0)	( ≥ 12)	(43-46)	≤ 80
N-48	1380-1420	≥ 836	≥ 876	366-390	≤ 80
N-48	(13.8-14.2)	( ≥ 10.5)	( ≥ 11)	(46-49)	≤ 80
N-50	1400-1450	≥ 860	≥ 876	382-406	≤ 80
N-50	(14.0-14.5)	( ≥ 10.8)	( ≥ 11)	(48-51)	≤ 80
30M	1080-1130	≥ 796	≥ 1114	223-247	≤ 100
30M	(10.8-11.3)	( ≥ 10)	( ≥ 14)	(28-31)	≤ 100
33M	1130-1180	≥ 836	≥ 1114	247-270	≤ 100
33M	(11.3-11.8)	( ≥ 10.5)	( ≥ 14)	(31-34)	≤ 100
35M	1170-1220	≥ 868	≥ 1114	263-287	≤ 100
35M	(11.7-12.2)	( ≥ 10.9)	( ≥ 14)	(33-36)	≤ 100
38M	1220-1250	≥ 899	≥ 1114	287-310	≤ 100
38M	(12.2-12.5)	( ≥ 11.3)	( ≥ 14)	(36-39)	≤ 100
40M	1250-1280	≥ 923	≥ 1114	302-326	≤ 100
40M	(12.5-12.8)	( ≥ 11.6)	( ≥ 14)	(38-41)	≤ 100
42M	1280-1320	≥ 955	≥ 1114	318-342	≤ 100
42M	12.8-13.2	( ≥ 12.0)	( ≥ 14)	(40-43)	≤ 100
45M	1320-1380	≥ 995	≥ 1114	342-366	≤ 100
45M	(13.2-13.8)	( ≥ 12.5)	( ≥ 14)	(43-46)	≤ 100
48M	1360-1430	≥ 1027	≥ 1114	366-390	≤ 100
48M	(13.6-14.3)	( ≥ 12.9)	( ≥ 14)	(46-49)	≤ 100
50M	1400-1450	≥ 1033	≥ 1114	382-406	≤ 100
50M	(14.0-14.5)	( ≥ 13.0)	( ≥ 14)	(48-51)	≤ 100
30H	1080-1130	≥ 796	≥ 1353	223-247	≤ 120
30H	(10.8-11.3)	( ≥ 10)	( ≥ 17)	(28-31)	≤ 120
33H	1130-1180	≥ 836	≥ 1353	247-271	≤ 120
33H	(11.3-11.8)	( ≥ 10.5)	( ≥ 17)	(31-34)	≤ 120
35H	1170-1220	≥ 868	≥ 1353	263-287	≤ 120
35H	(11.7-12.2)	( ≥ 10.9)	( ≥ 17)	(33-36)	≤ 120
38H	1220-1250	≥ 899	≥ 1353	287-310	≤ 120
38H	(12.2-12.5)	( ≥ 11.3)	( ≥ 17)	(36-39)	≤ 120
40H	1250-1280	≥ 923	≥ 1353	302-326	≤ 120
40H	(12.5-12.8)	( ≥ 11.6)	( ≥ 17)	(38-41)	≤ 120
42H	1280-1320	≥ 955	≥ 1353	318-342	≤ 120
42H	(12.8-13.2)	( ≥ 12.0)	( ≥ 17)	(40-43)	≤ 120
45H	1320-1380	≥ 963	≥ 1353	342-366	≤ 120
45H	(13.2-13.8)	( ≥ 12.1)	( ≥ 17)	(43-46)	≤ 120
48H	1370-1430	≥ 995	≥ 1274	366-390	≤ 120
48H	(13.7-14.3)	( ≥ 12.5)	( ≥ 16)	(46-49)	≤ 120
30SH	1080-1130	≥ 804	≥ 1592	223-247	≤ 150
30SH	(10.8-11.3)	( ≥ 10.1)	( ≥ 20)	(28-31)	≤ 150
33SH	1130-1170	≥ 844	≥ 1592	247-271	≤ 150
33SH	(11.3-11.7)	≥ 10.6	( ≥ 20)	(31-34)	≤ 150
35SH	1170-1220	≥ 876	≥ 1592	263-287	≤ 150
35SH	(11.7-12.2)	( ≥ 11.0)	( ≥ 20)	(33-36)	≤ 150
38SH	1220-1250	≥ 907	≥ 1592	287-310	≤ 150
38SH	(12.2-12.5)	( ≥ 11.4)	( ≥ 20)	(36-39)	≤ 150
40SH	1250-1280	≥ 939	≥ 1592	302-326	≤ 150
40SH	(12.5-12.8)	( ≥ 11.8)	( ≥ 20)	(38-41)	≤ 150
42SH	1280-1320	≥ 995	≥ 1592	318-342	≤ 150
42SH	(12.8-13.2)	( ≥ 12.5)	( ≥ 20)	(40-43)	≤ 150
45SH	1320-1380	≥ 1003	≥ 1592	342-366	≤ 150
45SH	(13.2-13.8)	( ≥ 12.6)	( ≥ 20)	(43-46)	≤ 150
28UH	1020-1080	≥ 764	≥ 1990	207-231	≤ 180
28UH	(10.2-10.8)	( ≥ 9.6)	( ≥ 25)	(26-29)	≤ 180
30UH	1080-1130	≥ 812	≥ 1990	223-247	≤ 180
30UH	(10.8-11.3)	( ≥ 10.2)	( ≥ 25)	(28-31)	≤ 180
33UH	1130-1170	≥ 852	≥ 1990	247-271	≤ 180
33UH	(11.3-11.7)	( ≥ 10.7)	( ≥ 25)	(31-34)	≤ 180
35UH	1180-1220	≥ 860	≥ 1990	263-287	≤ 180
35UH	(11.8-12.2)	( ≥ 10.8)	( ≥ 25)	(33-36)	≤ 180
38UH	1220-1250	≥ 907	≥ 1990	287-310	≤ 180
38UH	(12.2-12.5)	( ≥ 11.4)	( ≥ 25)	(36-39)	≤ 180
30EH	1080-1130	≥ 812	≥ 2388	223-247	≤ 200
30EH	(10.8-11.3)	( ≥ 10.2)	( ≥ 30)	(28-31)	≤ 200
33EH	1130-1170	≥ 812	≥ 2388	247-271	≤ 200
33EH	(11.3-11.7)	( ≥ 10.2)	( ≥ 30)	(31-34)	≤ 200
35EH	1170-1220	≥ 876	≥ 2388	263-287	≤ 200
35EH	(11.7-12.2)	( ≥ 11.0)	( ≥ 30)	(33-36)	≤ 200
30AH	1080-1130	≥ 812	≥ 2785	223-247	≤ 240
30AH	(10.8-11.3)	( ≥ 10.2)	( ≥ 35)	(28-31)	≤ 240
33AH	1130-1170	≥ 812	≥ 2785	247-271	≤ 240
33AH	(11.3-11.7)	( ≥ 10.2)	( ≥ 35)	31-34	≤ 240

NOTES:

The above-mentioned data of magnetic parameters and physical properties ars given at room temperature.

The maximum service temperature of magnet is changeable due to the ratio length and diameter and

Environmental factors.

Density: 7.4~7.6g/cm 3 ; α Br:-0.09~0.13%/ ℃, β Hcj: -0.50~0.80%/ ℃; Hv:600.

The demagnetized curve of sintered neodymium magnet

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Category: NdFeB Ring Magnets
Related Category: NdFeB Disc Magnets NdFeB Block Magnets NdFeB Arc Magnets NdFeB magnets NdFeB Sphere Magnets

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