Custom N45 round disc magnet neodymium subwoofers magnets

FOB Reference Price:Get Latest Price
$0.10 - $0.49 / Piece | 100 Piece/Pieces (Min. Order)
Lead Time:
Quantity(Pieces) 1 - 10000 >10000
Est. Time(days) 15 Negotiable
Customized packaging (Min. Order: 100000 Pieces)
$10.00 /Piece | 1 Piece (Min. Order) | Buy Samples
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Quick Details
Place of Origin:
Guangdong, China
Brand Name:
Jin tong
Model Number:
NdFeB Magnet
Industrial Magnet
±5%, 0.01mm ~ 0.05mm
Processing Service:
Cutting, moulding
N35-N52( M, H, SH, UH, EH series)
round magnet
Sintered Neodymium-Iron-Boron
Epoxy.Black Epoxy. Nickel.Silver.etc
Magnetism direction:
Thickness or Axial
Standard Foam-filled Cartons
Guass Meter, Fluxmeter,SST, Automatic Film Selector
Delivery time:
7-15 Days
Supply Ability
Supply Ability:
30 Ton/Tons per Week magnets
Packaging & Delivery
Packaging Details
We offer standard magnetic isolation package, first small box with foam,outside is metal and foam.
The magnetic field at the surface of the box less than 10 gauss. This is consistent with the requirements of air transport.
Picture Example:
Lead Time :
Quantity(Pieces) 1 - 10000 >10000
Est. Time(days) 15 To be negotiated
Video Description
If unable to find the magnet shape you want here? Pls contact us for customization.
Shape, size, performance can be customized.
Product Description
Product Name
N45H round /disc magnet for free energy motor/neodymium subwoofers
Neodymium Magnet/Permanet Magnet
Various kinds or according to customers' request
Disc, Block, Ring, Countersunk, Segment, Trapezoid, Irregular shapes are available, Or Customized Shapes
N35-N52,  N35M-N50M,  N33H-N48H,  N30SH-N35SH and so on
Tolerance in size
+/-0.05 mm
Direction of magnetisation
Through the thickness or through the diameter
Max Working Temperature

1. Electronic areas: speakers, headphones, acoustics, sensors and so on.
2. Motor areas: generators, servo motors, micro-motors, vibration motors, elevator motor and so on.
3. Clean Tech Energy : Water flow enhancement, wind turbines.
4. Health care: MRI, medical treatment equipment.
5. Other industries: electric doors and windows, electric vehicle, electric bicycles, computer, phone, boxes, magnetic tools, notebook and so on

Neodymium magnets are member of the rare earth magnet family. They are called "rare earth" because neodymium is a member of the "rare earth" elements on the periodic table. Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world.

Size & Shape & Grade can be customized according to your requirements.
Products Details
1. Material
Rare earth Powder, Cost-effective The raw materials are neodymium, iron and boron. Starting from material selection, high quality ndfeb strong magnetic materials are manufactured with high quality rare earth neodymium materials and various mixed materials.
2. Size Tolerance
a. Before grinding and cutting, we inspection the black product tolerance.
b. Before and after coating, we will inspection the tolerance by AQL standard.
c. Before delivery, will inspection the tolerance by AQL standard.
PS: Product size can be customized.

3. Surface Treatment

There have many plating options like Nickel coating, Zinc, Gold, Black Epoxy, White Epoxy and so on.
Zn and Nickle coating is the most popular coating.
After plating, has a good rust, corrosion resistance.

Different coatings for your choose
Suface Color
Coating Thickness
Salt Spray Test
Blue White
5 ~ 10 Microns
Have a high anti-corrosion ability
> 24 hr
Glowing Sliver
15 ~ 30 Microns
Applicable to a more harsh enviroment
> 48 hr
15 ~ 30 Microns
Toy, insulation machinery
> 300 hr
5 ~ 10 Microns
Decorative, heathy-care
> 24 hr
How Strong is Neodymium Magnet?
-- Different NdFeB Magnet Parameters:
Magnet Application:
Used in electronic, electrical machinery, medical equipment toys packaging, metal machinery, aerospace and other fields, The more common permanent magnet motor, speaker, magnetic separator, computer disk drive, household appliances, digital cameras, mobile phones, stationery, handicrafts, magnetic resonance imaging equipment etc.
Qaulity Control
How Neodymium Magnet is Made ?
-- Production Process:
Product Package:
1. Magnet is a special goods for delivery, and they have to make special packing before transportation.
2. Antimagnetic Packaging / Neutral Packing / Custom-make Welcome.
Customer Reviews
Company Profile
Jin Tong magnet was established in 1995, with 25 years history in NdFeB magnets industry.

-- In 2013, invested USD30,000,000 to establish new factory as production base with 35000 SQM in Changzhi city.
-- Established our branch companies in Shenzhen & Guangzhou & Dongguang province for fast service.
-- We could supply full turnkey production line for customers. Our factory is equipped with efficient welding furnace & vacuum rapid condensation furnace etc.

All the magnet products complies with ISO9001, MSDS, ROHS and SGS standards. Our magnet products have been exported to USA, Europe, Southeast Asia and other overseas market.

Jin Tong Factory Show:
With more than 500 sets advanced production instruments.
Production under oxygen-free environment for whole process.
Do not generate any waste gas or water or residue during production.
Manufacture cylinder, ring, block, arc shape or other customized shape NdFeB magnets.
Including 6 series, 28 varieties, more than 3000 kinds of specifications.
Cover N25 ~ N52 such normal strong grade and M, H, SH, UH, EH, AH high temperature resistance grade magnets.
Now we occupy a considerable market share in Chinese market. Especially for loadspeakers supplying market.
CWIEME BERLIN every year, Germany
CANTON FAIR every year, China
You're more than welcomed to visit us at above exhibitions every year. We look forward to a face to face meeting with you.
Q1: What is a neodymium magnet?
A: Neodymium magnet is also named NdFeB magnet, and its chemical formula is Nd2Fe14B. Neodymium magnet is a man-made permanent magnet, and it is a magnet with the strongest  magnetism under normal temperature at present.

Q2: What is the difference between sintered neodymium magnet and bonded neodymium magnet?
A: Neodymium magnet includes sintered neodymium and bonded neodymium magnet. Bonded magnet actually is made through injection moulding technology, and sintered neodymium magnet is made through high temperature heating under vacuum condition. The magnetism of sintered neodymium is much stronger than the magnetism of bonded neodymium magnet.

Q3:Are you a factory or trade company?
A: We are specific in produce of neodymium magnet over 25 years and now has 2 factories in China.

Q4: Could i visit your factory, where is your factory?
A: Welcome,Our main factory located at Changzhi city, Shanxi province, The other branch plant locate at Guangdong province.

Q5: Can you supply custom magnets service?
A: Yeah, we can customized any sizes of magnet based on your demand.

Q6: What is your terms of payment?
A: Alibaba Trade Assurance / T/T / Paypal. 100% in advance.(less than 5000$,100%payment, more than 5000$, 40% deposit, 60%balance)

Q7: How do you control the quality?
1) We have been monitoring from raw materials to the whole production processes
2) various advanced testing instruments to ensure the quality stability
3) We have QC Department ensures an ongoing development and maintenance of high quality standards
4) Check the packing before delivery

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