High Performance Customizable Sintered Neodymium NdFeB Magnetic Fordc Motor

• Customization: Available
• Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
• Shape: Irregular
• Model NO.: NdFeB Magnet
• Coating: Customized
• Grade: N30-33ah
• Product Name: NdFeB Magnet
• Keywords: Neodymium Magnet
• OEM & ODM Custom: Accept
• Logo Custom: Accept
• Material Composition: Neodymium-Iron-Boron (NdFeB)
• Magnet Type: Sintered NdFeB Permanent Magnet
• Surface Coating: Nickel (Ni-Cu-Ni), Zinc, Silver, Gold, Epoxy Resin
• Max Operating Temperature: 80°C to 230°C (Depending on Grade)
• Transport Package: International Standards
• Specification: Standard Specifications or Customized
• Trademark: KETAI
• Origin: Zhejiang, China
• Production Capacity: 500000pieces/Year

Product Description

Product Description

PREMIUM SINTERED NDFEB MAGNETS - HIGH-PERFORMANCE RARE EARTH PERMANENT MAGNETS
 
Our sintered neodymium-iron-boron (NdFeB) magnets are the strongest commercially available magnets, delivering exceptional magnetic performance for demanding industrial and commercial applications.
 
Featuring high remanence, superior coercive force, and outstanding energy product characteristics, these neodymium magnets offer unmatched magnetic strength in compact sizes.
 
Easily formed into various custom shapes and dimensions, our NdFeB magnets are ideal for mini-motors, sensors, audio devices, magnetic separation systems, and precision instruments.
 
To ensure long-lasting durability in humid environments, we provide comprehensive surface coating options, including nickel plating, zinc coating, gold plating, epoxy resin, and passivation treatments.
 
Whether you need magnets, our products meet the highest quality standards for automotive, electronics, and industrial sectors.

Specification

Magnetic Properties Of Sintered NdFeB Magnets
Grade	Remanence		Coercive Force		Intrinsic Coercive Force (HcJ)		Max.Energy Product		Max
	(Br)		(HcB)				(B-H) Max		Operation
									Temp. ℃
	mT	KG	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe	Tw℃
N30	1080-1130	10.8-11.3	≥ 796	≥ 10	≥ 955	≥ 12	233-247	28-31	80℃
N33	1130-1170	11.3-11.7	≥ 836	≥ 10.5	≥ 955	≥ 12	247-271	31-34	80℃
N35	1170-1220	11.7-12.2	≥ 868	≥ 10.9	≥ 955	≥ 12	263-287	33-36	80℃
N38	1220-1250	12.2-12.5	≥ 899	≥ 11.3	≥ 955	≥ 12	287-310	36-39	80℃
N40	1250-1280	12.5-12.8	≥ 907	≥ 11.4	≥ 955	≥ 12	302-326	38-41	80℃
N42	1280-1320	12.8-13.2	≥ 915	≥ 11.5	≥ 955	≥ 12	318-342	40-43	80℃
N45	1320-1380	13.2-13.8	≥ 923	≥ 11.6	≥ 955	≥ 12	342-366	43-46	80℃
N48	1380-1420	13.8-14.2	≥ 836	≥ 10.5	≥955	≥ 12	366-390	46-49	80℃
N50	1400-1450	14.0-14.5	≥ 796	≥ 10.0	≥ 876	≥ 11	382-406	48-51	60℃
N52	1430-1480	14.3-14.8	≥ 796	≥ 10.0	≥ 876	≥ 11	398-422	50-53	60℃
30M	1080-1130	10.8-11.3	≥ 796	≥ 10.0	≥ 1114	≥ 14	223-247	28-31	100℃
33M	1130-1170	11.3-11.7	≥ 836	≥ 10.5	≥ 1114	≥ 14	247-263	31-33	100℃
35M	1170-1220	11.7-12.2	≥ 868	≥ 10.9	≥ 1114	≥ 14	263-287	33-36	100℃
38M	1220-1250	12.2-12.5	≥ 899	≥ 11.3	≥ 1114	≥ 14	287-310	36-39	100℃
40M	1250-1280	12.5-12.8	≥ 923	≥ 11.6	≥ 1114	≥ 14	302-326	38-41	100℃
42M	1280-1320	12.8-13.2	≥ 955	≥ 12.0	≥ 1114	≥ 14	318-342	40-43	100℃
45M	1320-1380	13.2-13.8	≥ 995	≥ 12.5	≥ 1114	≥ 14	342-366	43-46	100℃
48M	1360-1430	13.6-14.3	≥ 1027	≥ 12.9	≥ 1114	≥ 14	366-390	46-49	100℃
50M	1400-1450	14.0-14.5	≥ 1033	≥ 13.0	≥ 1114	≥ 14	382-406	48-51	100℃
30H	1080-1130	10.8-11.3	≥ 796	≥ 10.0	≥ 1353	≥ 17	223-247	28-31	120℃
33H	1130-1170	11.3-11.7	≥ 836	≥ 10.5	≥ 1353	≥ 17	247-271	31-34	120℃
35H	1170-1220	11.7-12.2	≥ 868	≥ 10.9	≥ 1353	≥ 17	263-287	33-36	120℃
38H	1220-1250	12.2-12.5	≥ 899	≥ 11.3	≥ 1353	≥ 17	287-310	36-39	120℃
40H	1250-1280	12.5-12.8	≥ 923	≥ 11.6	≥ 1353	≥ 17	302-326	38-41	120℃
42H	1280-1320	12.8-13.2	≥ 955	≥ 12.0	≥ 1353	≥ 17	318-342	40-43	120℃
45H	1320-1360	13.2-13.6	≥ 963	≥ 12.1	≥ 1353	≥ 17	342-366	43-46	120℃
48H	1370-1430	13.7-14.3	≥ 995	≥ 12.5	≥ 1353	≥ 17	366-390	46-49	120℃
30SH	1080-1130	10.8-11.3	≥ 804	≥ 10.1	≥ 1592	≥ 20	223-247	28-31	150℃
33SH	1130-1170	11.3-11.7	≥ 844	≥ 10.6	≥ 1592	≥ 20	247-271	31-34	150℃
35SH	1170-1220	11.7-12.2	≥ 876	≥ 11.0	≥ 1592	≥ 20	263-287	33-36	150℃
38SH	1220-1250	12.2-12.5	≥ 907	≥ 11.4	≥ 1592	≥ 20	287-310	36-39	150℃
40SH	1250-1280	12.5-12.8	≥ 939	≥ 11.8	≥ 1592	≥ 20	302-326	38-41	150℃
42SH	1280-1320	12.8-13.2	≥ 987	≥ 12.4	≥ 1592	≥ 20	318-342	40-43	150℃
45SH	1320-1380	13.2-13.8	≥ 1003	≥ 12.6	≥ 1592	≥ 20	342-366	43-46	150℃
28UH	1020-1080	10.2-10.8	≥ 764	≥ 9.6	≥ 1990	≥ 25	207-231	26-29	180℃
30UH	1080-1130	10.8-11.3	≥ 812	≥ 10.2	≥ 1990	≥ 25	223-247	28-31	180℃
33UH	1130-1170	11.3-11.7	≥ 852	≥ 10.7	≥ 1990	≥ 25	247-271	31-34	180℃
35UH	1180-1220	11.8-12.2	≥ 860	≥ 10.8	≥ 1990	≥ 25	263-287	33-36	180℃
38UH	1220-1250	12.2-12.5	≥ 876	≥ 11.0	≥ 1990	≥ 25	287-310	36-39	180℃
40UH	1240-1280	12.5-12.8	≥ 899	≥ 11.3	≥ 1990	≥ 25	302-326	38-41	180℃
28EH	1040-1090	10.4-10.9	≥ 780	≥ 9.8	≥ 2388	≥ 30	207-231	26-29	200℃
30EH	1080-1130	10.8-11.3	≥ 812	≥ 10.3	≥ 2388	≥ 30	223-247	28-31	200℃
33EH	1130-1170	11.3-11.7	≥ 836	≥ 10.5	≥ 2388	≥ 30	247-271	31-34	200℃
35EH	1170-1220	11.7-12.2	≥ 876	≥ 11.0	≥ 2388	≥ 30	263-287	33-36	200℃
38EH	1220-1250	12.2-12.5	≥ 899	≥ 11.3	≥ 2388	≥ 30	287-310	36-39	200℃

28AH	1040-1090	10.4-10.9	≥ 787	≥ 9.9	≥ 2624	≥ 33	207-231	26-19	230℃
30AH	1080-1130	10.8-11.3	≥ 819	≥ 10.3	≥ 2624	≥ 33	223-247	28-31	230℃
33AH	1130-1170	11.3-11.7	≥ 843	≥ 10.6	≥ 2624	≥ 33	247-271	31-34	230℃

Available Coatings
Surface	Coating	Thickness (Microns)	Color	Resistance
Passivation		1	Silver Grey	Temporary Protection
Nickel	Ni+Ni	10-20	Bright Silver	Excellent Against Humidity
	Ni+Cu+Ni
Zinc	Zn	8-20	Bright Blue	Good Against Salt Spray
	C-Zn
Tin	Ni+Cu+Sn	15-20	Shinny Color	Excellent Against Humidity
Gold	Ni+Cu+Au	10-20	Gold	Superior Against Humidity
Copper	Ni+Cu	10-20	Gold	Temporary Protection
Epoxy	Epoxy	15-25	Black, Red, Grey	Excellent Against Humidity& Salt Spray
	Ni+Cu+Epoxy
	Zn+Epoxy
Chemical	Ni	10-20	Silver Grey	Excellent Against Humidity
Parylene	Parylene	5-20	Grey	Excellent Against Humidity, Salt Spray, Superior Against Solvents, Gases, Fungi And Bacteria, FDA Approved

Functional Advantages

SUPERIOR MAGNETIC PERFORMANCE
 
Our sintered NdFeB magnets exhibit the highest magnetic energy product among all permanent magnet materials, delivering stronger magnetic force than traditional ferrite magnets. With exceptional remanence and coercivity, these rare-earth magnets maintain consistent performance even under challenging operating conditions.

VERSATILE SIZE & SHAPE CUSTOMIZATION
 
Manufactured using advanced sintering technology, these neodymium magnets can be precisely formed into various sizes and geometries, including discs, blocks, rings, cylinders, arcs, and custom shapes. This flexibility enables seamless integration into diverse applications from micro-components to large industrial systems.

COMPREHENSIVE CORROSION PROTECTION
 
We offer multiple protective coating solutions tailored to your specific requirements. Our surface treatment options include nickel plating, zinc coating, silver plating, gold plating, phosphate treatment, passivation, and spray epoxy resin, ensuring optimal durability and extended service life.

EXCEPTIONAL COST-PERFORMANCE RATIO
 
Combining superior magnetic properties with competitive pricing, our sintered neodymium magnets deliver outstanding value for industrial buyers. The high energy density allows for miniaturization of devices, reducing overall system weight and material costs while maximizing efficiency.

CONSISTENT QUALITY & RELIABILITY
 
Manufactured under strict quality control processes and certified to international standards, our NdFeB magnets ensure consistent magnetic characteristics, dimensional accuracy, and reliable long-term performance for critical applications.

Core Applications

AUTOMOTIVE & MOTOR SYSTEMS
 
The superior magnetic flux density enables higher torque output, improved energy efficiency, and compact motor designs for modern automotive technologies.
 
ELECTRONICS & COMPUTER EQUIPMENT
 
Essential components in computer hard disk drives, printers, scanners, and data storage devices, our NdFeB magnets provide precise magnetic field control for read/write heads and actuator mechanisms, ensuring high-speed data processing and reliable operation.
 
AUDIO & ACOUSTIC DEVICES
 
Widely applied in professional speakers and sound systems, these rare earth magnets deliver exceptional audio clarity and powerful sound reproduction. The high magnetic strength enables slim speaker designs without compromising sound quality.
 
INDUSTRIAL AUTOMATION & MACHINERY
 
Critical for magnetic separators, linear actuators, magnetic couplings, magnetic transmission systems, and magnetic suspension equipment, our magnets enhance operational efficiency in manufacturing, material handling, and precision positioning applications across various industries.

Company Profile

FAQ

Q1: How fast can I get a reply?
A: You will receive our reply within 15 minutes during our work time, 08:00-18:00(UTC-8).
 
Q2: What information do I need to supply when I have an inquiry?
A: To get a precise quotation on time, pls inform us of the following details when you send an inquiry to us: Dimensions or drawing; Grade of Material, Magnetized direction; Surface coating(if necessary); Quantity and delivery terms.
If you don't have the above information, you can inform us of the application of the magnets, and our technician will provide it.
professional advice for you.
 
Q3: Can you offer customized sizes and shapes?
A: Yes, we could produce customized-sized, shaped magnets according to customers' requirements.
 
Q4: Can I have a free sample before mass production?
A: Yes. We could offer free samples if the magnets are in stock, but you need to pay the delivery cost. It may take a minimum of 7 days for production if your size is out of stock. For neodymium magnets, we have many different-sized samples in stock.
 
Q5: Can magnets be shipped by air or by express?
A: We could ship the magnets by air or by express with our magnetic shield package.
 
Q6: How about the quality of the magnets?
A: To ensure the quality of the products, every production procedure is inspected strictly by the professional QC team from all aspects. Besides, the Trade Assurance order will protect your payment, and make sure that we deliver on time and manufacture quality products as required.
 
Q7: Will the magnetism be weaker after years of use?
A: Yes, magnets do weaken over time. If you store permanent magnets correctly, neodymium magnets will likely lose less than 1% of their flux density over 100 years. The magnetism decline is neglected, that's why we call it a Permanent Magnet.