Permanent NdFeB Neodymium N42 N52 Ring Magnet for Electronic Speaker

• Customization: Available
• Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
• Shape: Ring
• Model NO.: HJ
• Coating: Ni/Zn/Epoxy, etc
• Grade: N35-N52 (M.H.Sh.Uh.Eh.Ah)
• Material: Sintered Neodymium-Iron-Boron
• Tolerance: +/-0.05mm
• Processing Service: Cutting, Moulding
• Magnetism Direction: Axial
• Sample: Available
• OEM/ODM: Available
• Lead Time: 5-7 Days
• Transport Package: Carton / Wooden
• Specification: Customized
• Trademark: Huajin
• Origin: Nanjing, Jiangsu, China
• HS Code: 8505111000
• Production Capacity: 50000000/Month
• Package Size: 35.00cm * 26.00cm * 15.00cm
• Package Gross Weight: 20.000kg

Product Description

Product Parameters

Support .    Available.

 

Type	Permanent Sintered Rare Earth Neodymium Magnets
Material	NdFeB (Neodymium Iron Boron)
Shape	Block / Round / Circle
Size	Customized
Coating	Nickel, Zinc, Epoxy, etc
Density	7.5-7.6 g/cm³
Lead Time	1-2 days for stocks 8-10 days for production

 

Magnetic Grade & Max. working Temperature	Magnetic Grade	Max. Working Temperature
	N25-N52	80ºC (176ºF)
	35M-52M	100 ºC (212 ºF)
	33H-50H	120ºC (248 ºF)
	33SH-48SH	150 ºC (302 ºF)
	30UH-42UH	180 ºC (356 ºF)
	30EH-38EH	200ºC (392 ºF)
	28AH-33AH	220 ºC (428 ºF)

 

Magnetization Direction

 

Detailed Photos

Different sizes and grades can be customized.

Grade	Remanence		Coercivity Force		Intrinsic Coercive Force		Max. Energy Product		Max. Working Temp.
	Br		Hcb		Hcj		(BH)max
	mT	kGs	kA/m	kOe	kA/m	kOe	kJ/m3	MGOe
N35	1170-1220	11.7-12.2	≥ 868	≥ 10.9	≥ 955	≥ 12	263-287	33-36	80 ° C
N38	1220-1250	12.2-12.5	≥ 899	≥ 11.3	≥ 955	≥ 12	287-310	36-39	80 ° C
N40	1250-1280	12.5-12.8	≥ 907	≥ 11.4	≥ 955	≥ 12	302-326	38-41	80 ° C
N42	1280-1320	12.8-13.2	≥ 915	≥ 11.5	≥ 955	≥ 12	318-342	40-43	80 ° C
N45	1320-1380	13.2-13.8	≥ 923	≥ 11.6	≥ 955	≥ 12	342-366	43-46	80 ° C
N48	1380-1420	13.8-14.2	≥ 923	≥ 11.6	≥ 876	≥ 12	366-390	46-49	80 ° C
N50	1400-1450	14.0-14.5	≥ 796	≥ 10.0	≥ 876	≥ 11	382-406	48-51	60 ° C
N52	1430-1480	14.3-14.8	≥ 796	≥ 10.0	≥ 876	≥ 11	398-422	50-53	60 ° C
35M	1170-1220	11.7-12.2	≥ 868	≥ 10.9	≥ 1114	≥ 14	263-287	33-36	100 ° C
38M	1220-1250	12.2-12.5	≥ 899	≥ 11.3	≥ 1114	≥ 14	287-310	36-39	100 ° C
40M	1250-1280	12.5-12.8	≥ 923	≥ 11.6	≥ 1114	≥ 14	302-326	38-41	100 ° C
42M	1280-1320	12.8-13.2	≥ 955	≥ 12.0	≥ 1114	≥ 14	318-342	40-43	100 ° C
45M	1320-1380	13.2-13.8	≥ 995	≥ 12.5	≥ 1114	≥ 14	342-366	43-46	100 ° C
48M	1360-1430	13.6-14.3	≥ 1027	≥ 12.9	≥ 1114	≥ 14	366-390	46-49	100 ° C
50M	1400-1450	14.0-14.5	≥ 1033	≥ 13.0	≥ 1114	≥ 14	382-406	48-51	100 ° C
35H	1170-1220	11.7-12.2	≥ 868	≥ 10.9	≥ 1353	≥ 17	263-287	33-36	120 ° C
38H	1220-1250	12.2-12.5	≥ 899	≥ 11.3	≥ 1353	≥ 17	287-310	36-39	120 ° C
40H	1250-1280	12.5-12.8	≥ 923	≥ 11.6	≥ 1353	≥ 17	302-326	38-41	120 ° C
42H	1280-1320	12.8-13.2	≥ 955	≥ 12.0	≥ 1353	≥ 17	318-342	40-43	120 ° C
45H	1300-1360	13-13.6	≥ 963	≥ 12.1	≥ 1353	≥ 17	326-358	43-46	120 ° C
48H	1370-1430	13.7-14.3	≥ 995	≥ 12.5	≥ 1353	≥ 17	366-390	46-49	120 ° C
33SH	1130-1170	11.3-11.7	≥ 844	≥ 10.6	≥ 1592	≥ 20	247-271	31-34	150 ° C
35SH	1170-1220	11.7-12.2	≥ 876	≥ 11.0	≥ 1592	≥ 20	263-287	33-36	150 ° C
38SH	1220-1250	12.2-12.5	≥ 907	≥ 11.4	≥ 1592	≥ 20	287-310	36-39	150 ° C
40SH	1240-1280	12.5-12.8	≥ 939	≥ 11.8	≥ 1592	≥ 20	302-326	38-41	150 ° C
42SH	1280-1320	12.8-13.2	≥ 987	≥ 12.4	≥ 1592	≥ 20	318-342	40-43	150 ° C
45SH	1320-1380	13.2-13.8	≥ 1003	≥ 12.6	≥ 1592	≥ 20	342-366	43-46	150 ° C
30UH	1080-1130	10.8-11.3	≥ 812	≥ 10.2	≥ 1990	≥ 25	223-247	28-31	180 ° C
33UH	1130-1170	11.3-11.7	≥ 852	≥ 10.7	≥ 1990	≥ 25	247-271	31-34	180 ° C
35UH	1180-1220	11.8-12.2	≥ 860	≥ 10.8	≥ 1990	≥ 25	263-287	33-36	180 ° C
38UH	1220-1250	12.2-12.5	≥ 876	≥ 11.0	≥ 1990	≥ 25	287-310	36-39	180 ° C
40UH	1240-1280	12.5-12.8	≥ 899	≥ 11.3	≥ 1990	≥ 25	302-326	38-41	180 ° C

Customer Feedbacks

Applications

1) Electronics - Sensors, hard disk drives, sophisticated switches, electro-mechanical devices etc.;
2) Auto Industry - DC motors (hybrid and electric), small high-performance motors, power steering;
3) Medical - MRI equipment and scanners;
4) Clean Tech Energy - Water flow enhancement, wind turbines;
5) Magnetic Separators - Used for recycling, food and liquids QC, waste removal;
6) Magnetic Bearing - Used for highly sensitive and delicate procedures in various heavy industries.

 

Company Profile

Certifications

Exhibitions

Package: Magnetic Isolation Package
Carton Dimension: 36*27*15CM 
Shipping: By express (UPS, FedEx, DHL, etc) / air / rail / sea.

1. What is the normal dimension of your products?Dimensions are customized according to customers' requirements.

2. What information do I need to provide when I have an inquiry?
a. Dimensions or drawing with tolerances.
b. Material grade.
c. Magnetic direction.
d. Surface coating (if necessary).
e. Quantity and delivery terms.
3. How long will you give me the reply?
7x12 hours.

4. What is the price?
Prices depend on the sizes, grades and qty. Please advise your specific needs, so we can check more.

5. Could I get samples?
Yes, for sure! Please let us know your requirements about samples.

6. How long will you deliver samples and bulk orders?
1-2 days for samples, 8-10 days for bulk orders.

7. How to pay?
T/T, Western Union, PayPal.