Neodymium Magnets with Screw Hole Countersunk Magnetic N52 Base Flat Countersunk Holes Magnet

• Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
• Shape: Customized
• Coating: Ni, Zn, Silver, Gold, Epoxy, Rubber and So on
• Model NO.: OEM
• OEM: Available
• Size: Regular Size or Customized Size
• Countersunk Hole: Customized
• Factory Tour: Available
• Tolerance: +/-0.1mm, +/-0.05mm or as Per Drawing
• Magnetized Direction: Axially Magnetized, Diametrally Magnetized
• Transport Package: Standard Sea Freight Packaging
• Specification: Customized
• Trademark: Rongtailai
• Origin: China
• Production Capacity: 500000PCS/Month

Product Description

Product Description

 

Performance Table

Grade	Br		Hcj		Hcb		(BH)max
Units	kGs	Tesla	kOe	kA/m	kOe	kA/m	MGOe	kJ/m3
N30	10.8~11.3	1.08~1.13	12.0	955	10.0	796	28~31	223~247
N33	11.3~11.7	1.13~1.17	12.0	955	10.5	836	31~34	247~271
N35	11.7~12.2	1.17~1.22	12.0	955	10.9	867	33~36	263~287
N38	12.2~12.5	1.22~1.25	12.0	955	11.3	899	36~39	287~310
N40	12.5~12.8	1.25~1.28	12.0	955	11.6	923	38~41	302~326
N42	12.8~13.2	1.28~1.32	12.0	955	11.6	923	40~43	318~342
N45	13.2~13.6	1.32~1.36	12.0	955	11.0	875	43~46	342~366
N48	13.6~14.0	1.36~1.40	12.0	955	11.2	891	46~49	366~390
N50	14.0~14.3	1.40~1.43	12.0	955	10.5	836	47~51	374~406
N52	14.3~14.6	1.43~1.46	12.0	955	10.5	836	51~53	390~422
N30M	10.8~11.3	1.08~1.13	14.0	1114	10.0	796	28~31	223~247
N33M	11.3~11.7	1.13~1.17	14.0	1114	10.5	836	31~34	247~271
N35M	11.7~12.2	1.17~1.22	14.0	1114	10.9	867	33~36	263~287
N38M	12.2~12.5	1.22~1.25	14.0	1114	11.3	899	36~39	287~310
N40M	12.5~12.8	1.25~1.28	14.0	1114	11.6	923	38~41	302~326
N42M	12.8~13.2	1.28~1.32	14.0	1114	12.0	955	40~43	318~342
N45M	13.2~13.6	1.32~1.36	14.0	1114	12.5	995	43~46	342~366
N48M	13.6~14.0	1.36~1.40	14.0	1114	12.8	1019	46~49	358~390
N50M	14.0~14.3	1.40~1.43	14.0	1114	13.0	1035	47~51	374~406
N52M	14.3~14.6	1.43~1.46	14.0	1114	12.5	995	51~53	390~422
N30H	10.8~11.3	1.08~1.13	17.0	1353	10.0	796	28~31	223~247
N33H	11.3~11.7	1.13~1.17	17.0	1353	10.5	836	31~34	247~271
N35H	11.7~12.2	1.17~1.22	17.0	1353	10.9	867	33~36	263~287
N38H	12.2~12.5	1.22~1.25	17.0	1353	11.3	899	36~39	287~310
N40H	12.5~12.8	1.25~1.28	17.0	1353	11.6	923	38~41	302~326
N42H	12.8~13.2	1.28~1.32	17.0	1353	12.0	955	40~43	318~342
N45H	13.2~13.6	1.32~1.36	17.0	1353	12.2	971	43~46	342~366
N48H	13.6~14.0	1.36~1.40	17.0	1353	12.9	1027	46~49	358~390
N50H	14.0~14.3	1.40~1.43	16.0	1273	13.0	1035	47~51	374~406
N30SH	10.8~11.3	1.08~1.13	20.0	1592	10.1	804	28~31	223~247
N33SH	11.3~11.7	1.13~1.17	20.0	1592	10.6	844	31~34	247~271
N35SH	11.7~12.2	1.17~1.22	20.0	1592	11.0	875	33~36	263~287
N38SH	12.2~12.5	1.22~1.25	20.0	1592	11.4	907	36~39	287~310
N40SH	12.5~12.8	1.25~1.28	20.0	1592	11.8	939	38~41	302~326
N42SH	12.8~13.2	1.28~1.32	20.0	1592	12.2	971	40~43	318~342
N45SH	13.2~13.6	1.32~1.36	20.0	1592	12.3	979	43~46	342~366
N48SH	13.6~14.0	1.36~1.40	19.0	1512	12.5	995	46~49	366~390
N28UH	10.4~10.8	1.04~1.08	25.0	1989	9.6	764	26~29	207~231
N30UH	10.8~11.3	1.08~1.13	25.0	1989	10.2	812	28~31	223~247
N33UH	11.3~11.7	1.13~1.17	25.0	1989	10.7	851	31~34	247~271
N35UH	11.7~12.2	1.17~1.22	25.0	1989	10.8	859	33~36	263~287
N38UH	12.2~12.5	1.22~1.25	25.0	1989	11.0	875	36~39	287~310
N40UH	12.5~12.8	1.25~1.28	25.0	1989	11.5	915	38~41	302~326
N42UH	12.8~13.2	1.28~1.32	25.0	1989	12.2	971	40~43	310~342
N45UH	13.2~13.6	1.32~1.36	24.0	1909	12.3	979	43~46	342~366
N28EH	10.4~10.8	1.04~1.08	30.0	2387	9.8	780	26~29	207~231
N30EH	10.8~11.3	1.08~1.13	30.0	2387	10.2	812	28~31	223~247
N33EH	11.3~11.7	1.13~1.17	30.0	2387	10.3	820	31~34	247~271
N35EH	11.7~12.2	1.17~1.22	30.0	2387	10.5	836	33~36	263~287
N38EH	12.2~12.5	1.22~1.25	30.0	2387	11.5	915	36~39	279~310
N28AH	10.4~10.8	1.04~1.08	34.0	2706	9.8	780	26~29	199~231
N30AH	10.8~11.3	1.08~1.13	34.0	2706	10.2	812	27~31	215~247
N33AH	11.3~11.7	1.13~1.17	34.0	2706	10.3	820	31~34	239~271
N35AH	11.7~12.2	1.17~1.22	34.0	2706	10.5	836	33~36	255~287

 Physical Property

Parameter	Unit	Standdrd
Curie Temperature	ºC	310-380
αBr	%/ºC	-0.77
βHcj	%/ºC	0.45
Maximum Operating Temperature	ºC	80-230
Density	G/cm³	7.4-7.8
Vickers Hardness	HV	550-650
Tensile Bending Strength	Mpa	250
Tensile Strength	Mpa	80
Compressive Strength	Mpa	1050
Resistivity	μΩ·cm	150
Thermal Conductivity	W/(m·k)	6-8

 

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FAQ

1) Are you manufacture or trade?
We are manufacturer, our factory is located in Baotou City,Inner Mongolia Autonomous Region, but we can also provide one stop purchasing service for you!

2)Payment terms
T/T(telex transfer), Western Union, MoneyGram, BTC(bitcoin), etc.

3)Sample Available
We can provide small free samples for quality evaluation purpose!

4)What information do I need to provide when I have an inquiry?

Please let us know the inquiry details include: material grade, shape, dimension, quantity and drawing with magnetic properties, tolerance, surface coating, magnetized direction etc. Or other requirements, such as special packing, delivery time, price term (FOB, CIF, FCA......).

5)Can you guarantee safe and secure shipping of products?

Our products always use safe and high quality export packing. We usually use vacuum packing and iron shield packing by air to avoid magnets demagnetization and use wooden pallet or wooden cases that are safe and environmental protection by sea.

 

6)How should I store NdFeB magnets?

NdFeB magnets should be stored in a dry, cool place away from heat sources and other magnets. They should also be handled carefully to avoid damage, as they can be brittle and prone to cracking. It is also a good idea to store NdFeB magnets away from electronic devices, as the strong magnetic field of the magnets can interfere with their operation.