High quality Speaker drivers manufacturers and suppliers in China

Payment & Shipping Terms		Supply Capacity
Unit Price:	1.0~10.0 USD	Production Capacity:	100000pcs/month
Trade Term:	FOB	Packing:	CARTONS
Payment Terms:	L/C, D/P, D/A, T/T, WU	Delivery Date:	40
Min. Order:	500 Piece/Pieces
Means of Transport:	Ocean, Air, Land

We are the manufacturer of,Magnet Detacher,speaker magnetic assembly,speaker driver,woofer driver and so on .

A speaker driver is an individual transducer that converts electrical energy to sound waves, typically as part of a loudspeaker, television, or other electronics device. Sometimes the transducer is itself referred to as a speaker, particularly when a single one is mounted in an enclosure or as surface-mounted device (as in a wall-mounted speaker, car audio speaker, and so on). There are many different types of speaker drivers. The most common ones are the woofer, mid-range and tweeter, as well as subwoofers which are becoming very common. Less common types of speaker drivers are supertweeters and rotary woofers

We are supplier of High quality Speaker drivers block sintered NdFeB Magnet, which can be used as fan generator magnets .

1.NdFeB magnet is The strongest power magnets in all of the permanent magnets. Which can be made in different shape, such as Block sintered NdFeB magnet, Disc sintered NdFeB magnet, etc.

2.Material:Sintered Neodymium-Iron-Boron;

3. The material Grade including: N35 to N52;N35M to N50M;N35H to N48H;N35SH to N45SH;N30UH to N40UH,N30EH to N38EH.Also we can suggest the grade according to where the magnets will be used according to our customer's request.

4. Advanced techniques: Utilizes new Sintered NdFeB magnet techniques and equipment such as strip casting, HDDR technology in our factory to allow us to make high performance NdFeB over N52 possible.

5. The Excellent strength value: the highest (BH)max reaches up to 51MGOe.

6. The Extremely Resistance to demagnetization with Hci,the intrinsic coercive force is over 30000Oe.Neodymium magnet loss -0.09~-0.13% on Br/°C;

7. The moderate temperature stability, their working stability is under 80 degree centigrade for low Hci for NdFeB magnet and above 200 degree centigrade for high Hci NdFeB magnet.

8.Various shapes and sizes or according to customers' requirement; Also we can design the size for our customer's request.

9.Effective Surface treatment to prevent corrosion, such Nickel coating(Ni-Cu-Ni coating);Zinc coating, gold coating, silver coating, tin(Sn) coating, epoxy coating, chemical coating, parylene coating, and so on;

10.Widely used in different application, such as sensors, Motor,rotors, wind turbines/wind generators, loudspeakers, magnetic hooks, magnetic holder, filters automobiles and so on;

11.The quality control: we have our large and expert quality control department and we ensure the magnets ( block sintered NdFeB Magnet,block Neodymium Magnet) from our factory are in high quality.

12.We will provide our customers the test report and BH curves for each item magnets, and also we can do the PCT test ,salt spray test report, aging test report and provide the test report and so on according to our customer's request.

Sintered NdFeB Magnet
Grade	Residual Induction (Br)		Coercive Force (Hcb)		Intrinsic Coercive Force (Hcj)		Max Energy Product (BH)max		Max Working Temp.
Grade	T	kGs	kA/m	kOe	kA/m	kOe	Kj/m³	MGOe	(°C)
N35	1.17-1.22	11.7-12.2	≥868	≥10.9	≥955	≥12	263-287	33-36	80
N38	1.22-1.25	12.2-12.5	≥899	≥11.3	≥955	≥12	287-310	36-39	80
N40	1.25-1.28	12.5-12.8	≥907	≥11.4	≥955	≥12	302-326	38-41	80
N42	1.28-1.32	12.8-13.2	≥915	≥11.5	≥955	≥12	318-342	40-43	80
N45	1.32-1.38	13.2-13.8	≥923	≥11.6	≥955	≥12	342-366	43-46	80
N48	1.38-1.42	13.8-14.2	≥923	≥11.6	≥955	≥12	366-390	46-49	80
N50	1.40-1.45	14.0-14.5	≥796	≥10	≥876	≥11	374-406	47-51	60
N52	1.43-1.48	14.3-14.8	≥796	≥10	≥876	≥11	390-422	49-53	60
N35M	1.17-1.22	11.7-12.2	≥868	≥10.9	≥1114	≥14	263-287	33-36	100
N38M	1.22-1.25	12.2-12.5	≥899	≥11.3	≥1114	≥14	287-310	36-39	100
N40M	1.25-1.28	12.5-12.8	≥923	≥11.6	≥1114	≥14	302-326	38-41	100
N42M	1.28-1.32	12.8-13.2	≥955	≥12	≥1114	≥14	318-342	40-43	100
N45M	1.32-1.38	13.2-13.8	≥955	≥12.5	≥1114	≥14	342-366	43-46	100
N48M	1.37-1.43	13.7-14.3	≥1027	≥12.9	≥1114	≥14	366-390	46-49	100
N50M	1.40-1.45	14.0-14.5	≥1033	≥13	≥1114	≥14	382-406	48-51	100
N35H	1.17-1.22	11.7-12.2	≥868	≥10.9	≥1353	≥17	263-287	33-36	120
N38H	1.22-1.25	12.2-12.5	≥899	≥11.3	≥1353	≥ 17	287-310	36-39	120
N40H	1.25-1.28	12.5-12.8	≥923	≥11.6	≥1353	≥17	302-326	38-41	120
N42H	1.28-1.32	12.8-13.2	≥955	≥12	≥1353	≥17	318-342	40-43	120
N45H	1.32-1.36	13.2-13.6	≥963	≥12.1	≥1353	≥ 17	326-358	43-46	120
N48H	1.37-1.43	13.7-14.3	≥995	≥12.5	≥1353	≥17	366-390	46-49	120
N35SH	1.17-1.22	11.7-12.2	≥876	≥11	≥1592	≥20	263-287	33-36	150
N38SH	1.22-1.25	12.2-12.5	≥907	≥11.4	≥1592	≥20	287-310	36-39	150
N40SH	1.25-1.28	12.5-12.8	≥939	≥11.8	≥1592	≥20	302-326	38-41	150
N42SH	1.28-1.32	12.8-13.2	≥987	≥12.4	≥1592	≥20	318-342	40-43	150
N45SH	1.32-1.38	13.2-13.8	≥1003	≥12.6	≥1592	≥20	342-366	43-46	150
N28UH	1.04-108	10.4-10.8	≥764	≥9.6	≥1990	≥25	207-231	26-29	180
N30UH	1.08-1.13	10.8-11.3	≥812	≥10.2	≥1990	≥25	223-247	28-31	180
N33UH	1.13-1.17	11.3-11.7	≥852	≥10.7	≥1990	≥25	247-271	31-34	180
N35UH	1.17-1.22	11.7-12.2	≥860	≥10.8	≥1990	≥25	263-287	33-36	180
N38UH	1.22-1.25	12.2-12.5	≥876	≥11	≥1990	≥25	287-310	36-39	180
N40UH	1.25-1.28	12.5-12.8	≥899	≥11.3	≥1990	≥25	302-326	38-41	180
N42UH	1.28-1.32	12.8-13.2	≥899	≥11.3	≥1990	≥25	318-342	40-43	180
N28EH	1.04-1.08	10.4-10.8	≥780	≥9.8	≥2388	≥30	207-231	26-29	200
N30EH	1.08-1.13	10.8-11.3	≥812	≥10.2	≥2388	≥30	223-247	28-31	200
N33EH	1.13-1.17	11.3-11.7	≥836	≥10.5	≥2388	≥30	247-271	31-34	200
N35EH	1.17-1.22	11.7-12.2	≥876	≥11	≥2388	≥30	263-287	33-36	200
N38EH	1.22-1.25	12.2-12.5	≥899	≥11.3	≥2388	≥30	287-310	36-39	200
N40EH	1.25-1.28	12.5-12.8	≥899	≥11.3	≥2388	≥30	302-326	38-41	200
N28AH	1.04-1.08	10.4-10.8	≥787	≥9.9	≥2624	≥33	207-231	26-29	230
N30AH	1.08-1.13	10.8-11.3	≥819	≥10.3	≥2624	≥33	223-247	28-31	230
N33AH	1.13-1.17	11.3-11.7	≥843	≥10.6	≥2624	≥33	247-271	31-34	230
N35AH	1.17-1.22	11.7-12.2	≥876	≥11	≥2624	≥33	263-287	33-36	230
N38AH	1.22-1.25	12.2-12.5	≥899	≥11.3	≥2624	≥33	287-310	36-39	230

Mateirial : NDFEB MAGNET
Grade: N35
SIZE: D10X3 MM
Coating: CHROME PLATED

Magnetic Properties of Neodymium Magnets
Grade	Residual Induction	Coercive Force	Intrinsic Coercive Force	Maximum Energy Product	Maximum Working Temperature
	Br	Hcb	Hcj	(BH)max	Tw
	mT	kA/m	kA/m	kJ/m3
	[kGs]	[kOe]	[kOe]	[MGOe]
N35	1170-1220	≥868	≥955	263-287	80°
N35	[11.7-12.2]	[≥10.9]	[≥12]	[33-36]	80°
N38	1220-1250	≥899	≥955	287-310	80°
N38	[12.2-12.5]	[≥11.3]	[≥12]	[36-39]	80°
N40	1250-1280	≥907	≥955	302-326	80°
N40	[12.5-12.8]	[≥11.4]	[≥12]	[38-41]	80°
N42	1280-1320	≥915	≥955	318-342	80°
N42	[12.8-13.2]	[≥11.5]	[≥12]	[40-43]	80°
N45	1320-1380	≥923	≥955	342-366	80°
N45	[13.2-13.8]	[≥11.6]	[≥12]	[43-46]	80°
N48	1380-1420	≥923	≥955	366-390	80°
N48	[13.8-14.2]	[≥11.6]	[≥12]	[46-49]	80°
N50	1400-1450	≥796	≥876	382-406	80°
N50	[14.0-14.5]	[≥10.0]	[≥11]	[48-51]	80°
N52	1430-1480	≥796	≥876	398-422	80°
N52	[14.3-14.8]	[≥10.0]	[≥11]	[50-53]	80°
30M	1080-1130	≥805	≥1114	223-247	100°
30M	[10.8-11.3]	[≥10.1]	[≥14]	[28-31]	100°
33M	1130-1170	≥836	≥1114	247-263	100°
33M	[11.3-11.7]	[≥10.5]	[≥14]	[31-33]	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	1370-1430	≥1027	≥1114	366-390	100°
48M	[13.7-14.3]	[≥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°
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	1320-1360	≥963	≥1353	342-366	120°
45H	[13.2-13.6]	[≥12.1]	[≥17]	[43-46]	120°
48H	1370-1430	≥995	≥1353	366-390	120°
48H	[13.7-14.3]	[≥12.5]	[≥17]	[46-49]	120°
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	≥987	≥1592	318-342	150°
42SH	[12.8-13.2]	[≥12.4]	[≥20]	[40-43]	150°
45SH	1320-1380	≥1003	≥1592	342-366	150°
45SH	[13.2-13.8]	[≥12.6]	[≥20]	[43-46]	150°
28UH	1040-1080	≥764	≥1990	207-231	180°
28UH	[10.4-10.8]	[≥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	1170-1220	≥860	≥1990	263-287	180°
35UH	[11.7-12.2]	[≥10.8]	[≥25]	[33-36]	180°
38UH	1220-1250	≥876	≥1990	287-310	180°
38UH	[12.2-12.5]	[≥11.0]	[≥25]	[36-39]	180°
40UH	1250-1280	≥899	≥1990	302-326	180°
40UH	[12.5-12.8]	[≥11.3]	[≥25]	[38-41]	180°
28EH	1040-1080	≥780	≥2388	207-231	200°
28EH	[10.4-10.8]	[≥9.8]	[≥30]	[26-29]	200°
30EH	1080-1130	≥812	≥2388	223-247	200°
30EH	[10.8-11.3]	[≥10.2]	[≥30]	[28-31]	200°
33EH	1130-1170	≥876	≥2388	247-271	200°
33EH	[11.3-11.7]	[≥10.5]	[≥30]	[31-34]	200°
35EH	1170-1220	≥876	≥2388	263-287	200°
35EH	[11.7-12.2]	[≥11.0]	[≥30]	[33-36]	200°
38EH	1220-1250	≥899	≥2388	287-310	200°
38EH	[12.2-12.5]	[≥11.3]	[≥30]	[36-39]	200°
28AH	1040-1080	≥787	≥2624	207-231	220°
28AH	[10.4-10.8]	[≥9.9]	[≥33]	[26-29]	220°
30AH	1080-1130	≥819	≥2624	223-247	220°
30AH	[10.8-11.3]	[≥10.3]	[≥33]	[28-31]	220°
33AH	1130-1170	≥843	≥2624	247-271	220°
33AH	[11.3-11.7]	[≥10.6]	[≥33]	[31-34]	220°

The Physical Properties of Neodymium Magnets

Parameters	Units	Indicators
Density	g/cm³	≥7.3
Home temperature	℃	310-340
BrReversible temperature coefficient	℃/%	-0.100~-0.130
HcjReversible temperature coefficient	℃/%	0.40~0.70
Compressive strength	N/mm2	1050
Bending strength	N/mm2	250
Tensile strength	N/mm2	80
Webster Hardness		600
Coefficient of thermal expansion(20 to 200℃)	10-6/k	∥5⊥-1.5
Specific heat	J/(Kg.K)	460
Thermal conductivity	W/(m.K)	9
Resistivity	μΩNaN	150

The Surface Coatings of Neodymium Magnets

Surface Coating	Coating Method	Coating thickness(m)	Coating Color	Coating features
Nickel	plating	≥5	Yellow	Corrosion resistance strong,with outstanding resistance to high temperature and humidity capabilities
zinc	plating	≥5	Silvery white	Has strong corrosion resistance,anti-salt spray test ability .
gold	plating	≥5	gold	Has outstanding resistance to high temperature capability,corrosion resistance,good resistance to color change ablity
Ni-Cu-Ni	plating	15-30	sliver	strong corrosion resistance
Epoxy	Electrophoresis	15-20	Black/grey	strong corrosion resistance,outstanding resistance to salt spray,strong resistance to high temperature, high humidity capacity

Category: Speaker magnets

Place of Origin:	Zhejiang,China (Mainland)
Application:	Speaker Magnet
Shape:	Coil
Type:	Permanent
Composite:	Ferrite Magnet
Brand Name:	HONY
material:	ndfeb magnet
usage:	woofer driver
MOQ:	1000 PCS
Grade:	For your require
shape:	ring magnet
magnetized:	for your require

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