Neodymium magnet is a permanent magnet made from an alloy of neodymium, iron and boron. NdFeB magnets are widely used in various fields, such as motors, speakers, electric generators etc. Besides, the neodymium magnet is the strongest type of permanent magnet commercially available.
Sintered NdFeB magnets are the most powerful commercialized permanent magnets available today, with maximum energy product ranging from 26 MGOe to 52 MGOe. Nd-Fe-B is the third generation of permanent magnet developed in the 1980s. It has a combination of very high remanence and coercivity, and comes with a wide range of grades, sizes and shapes. With its excellent magnetic characteristics, abundant raw material and relatively low prices, Nd-Fe-B offers more flexibility in designing of new or replace the traditional magnet materials such as ceramic, Alnico and Sm-Co to achieve high efficiency, low cost and more compact devices.
Advantages
*Extreme strong Br Resident induction.
*Excellent demagnetization resistance capability.
*Good Price relative to its high magnetic properties.
Magnetic characteristics of sintered NdFeb
Note:The above mentioned data is given at room temperature.
The above-mentioned maximum working temperature of magnet is changeable due to the ratio length and diameter,surface coating and environmental factors.
FAQ
1. MOQ: less quantity is acceptable for your easy start of business
2. Sample lead time: 15-20 days.
3. Port: Shanghai, Ningbo, China any port.
4. Fast Delivery: when you choose the item and decide your design, we can produce it as fast as possible.
5. If you would like to make an enquiry, how can you contact us?
6. The way of identify the pole of magnet:
The easiest way is to make a dot on the North or South or both Poles. If you need, we can make the dot as your requirement
7.Is one pole stronger than the other?
No, both poles are equally strong
8.Which is the strongest type of magnet?
Neodymium (more precisely Neodymium-Iron-Boron) magnets are the strongest permanent magnets in the world.
9.Can you supply BH Curves, or Demagnetization Curves for your magnets?
Yes, we've offered Demagnetization Curves for our most common Neodymium magnet grades right here.
10.Will my neodymium magnets lose strength over time?
Very little. Neodymium magnets are the strongest and most permanent magnets known to man. If they are not overheated or physically damaged,
neodymium magnets will lose less than 1% of their strength over 10 years - not enough for you to notice unless you have very sensitive measuring equipment.
They won't even lose their strength if they are held in repelling or attracting positions with other magnets over long periods of time.
China factory strong rare earth neodymium magnet
Neodymium magnet is also named NdFeB magnet,rare earth magnet or permanent magnet.it is kind of sintered magnet.Neodymium magnet is the strongest permanent magnet in the world so far,which belongs to the fouth generation magnet.Besides its powerful strength, it is very tractable,it can be machined into different shapes, sizes, or with countersink holes,or edge and corner processing. we can do custom magnet to meet your requirements.
Specifications:
Product:Rare earth neodymium magnet
Grade:N33 N35 N38 N40 N42 N45 N48 N50 N52
Size:As per customer's request
Shape:round/disc,block,Cylinder,Bar,Ring,Countersunk,Segment,Ball,hook,Cup, Trapezoid,custom shape)
Surface Coating:Nickel, Zn, NiCuNi,Epoxy,Rubber,Gold,Sliver and so on
Tolerance:± 0.05mm
Magnetization Direction:Thickness/Axially/Diametrally/Multi-poles/Radial Magnetized
Working Temperature: 80°C (176°F)--220°C (428°F)
Sample: Available
Lead time:5-8 Working days after payment
Shippment: Express via DHL/FedEx/UPS,or by sea.Fast door to door service.
Why choose us?
1.Professional neodymium magnet manufacturer and exporter since 2008.
2.Competitive price with high quality neodymium magnet with REACH, ROHS and SVHC Certificate.
3.High graded raw material to ensure the long-term stability of magnetic properties.
4.DHL, Fedex, TNT, sea shippment and Multi-channel transportation.
5.One-stop magnet solution provider from production to shippment.
About us:
Fourearth Magnet Co.,ltd is founded in 2008,Which is a leading manufacturer of high performance permanent magnet with ISO9001:2008, ISO/TS 16949 and ISO14001 certificates in China. Fourearth serves a variety of markets from consumer electronics, industrial automation, automotive, green energy, household appliances, medical, aerospace and telecommunications. Fourearth's magnets are used in motors, speakers, generators, sensors, compressors, MRI, magnetic chucks and separators etc.
To meet the more and more demanding markets, Fourearth has been concentrating on manufacturing technologies for quality stability and cost reduction. Over the last ten years Fourearth export more than 90% of the magnets to American, European, Asian and African countries. With such wide range of magnetic material options, our professional technicians are available to help solve your magnetic needs and choose the most cost effective solution for you.
MaximMAGNET is a quality neodymium magnets manufacturer in Ningbo of China, she makes magnets not simply the products but a conveyor of her good service to clients. By focusing on improving clients' experience of our service MaximMAGNET is aiming to build herself a reliable brandname in magnetic industry.
Magnet Material big disc magnet, Neodymium magnets, Rare earth magnets, NdFeB big disc magnets
Max working temperature Magnet grades Max.working temperature
N33-N52 80â?? (176 â?°F)
N35M-N50M 100â?? (212 â?°F)
N30H-N48H 120â?? (248 â?°F)
N30SH-N45SH 150â?? (302 â?°F)
N28UH-N40UH 180â?? (356 â?°F)
N28EH-N38EH 200â?? (392 â?°F)
N28AH-N33AH 230â?? (446 â?°F)
Your detailed information referring to the following items will be highly appreciated and facilitate our quick and acurate offering:
1. Magnet size and shape, drawing is preferrable.
2. Magnet grade you're looking for. Consultant service available in MaximMag;
3. Coating of the magnets: NiCuNi, Epoxy, Zinc, Passivation etc.
4. Magnetized direction
5. Quantity;
6. Constant Max working temperature;
7. Your information on how you use magnets in your applications will always be appreciated.
Basic information:
1. Grades: N30-N50, 35M-48M, 33H-42H, 35SH-45SH, 30UH-40UH, 30EH-38EH.
2. Size: various customized
3. Coating: nickel, zinc, expoy, gold and etc.
4. Shapes: Cylinder and we can also manufacture the shape of magnet according to clients' requirement
5. Package: carton or according to the customer requirments
6. Materials:Neodymium-Iron-Boron magnets, Sintered NdFeB magnets
7. Certification: SGS,ISO9001:2000
8. Technology: Utilizes new Sintered NdFeB magnet techniques and equipment such as Strip casting, HDDR technology
9. Magnetic properties:
a) High coercive force,
b) (BH)max from 33 to 53MGOe,
c) Max working temperature up to 230C;
10. Applications:
Sensors, motors, rotors, wind turbines/wind generators, loudspeakers, magnetic hooks, magnetic holder, filters, automobiles, and so on.
Carton: 30cmx30cmx15cm
Wooden Box : depending on the quantity.
21134 Rare Earth Neodymium Magnets Suppliers
Short on time? Let Rare Earth Neodymium Magnets sellers contact you.
This cylinder magnet can be applied for magnetic sensors.
Magnetic cylinder sensors are mainly used to monitor the piston position on cylinders and grippers. The field of the magnet integrated into the piston is detected by the sensor through the actuator wall. Thanks to the contact-free position detection method, magnetic cylinder sensors are reliable and wear-free: no loss of contact material, no impacts, no adhesion, and only one switching point.
Moreover, this cylinder neo magnet can also be applied for magnetic stir bar.
If you are looking for magnetic rod at this size, we won¡¡¥t charge any molding / tooling fees cuz we have had all these necessary molds. Both axially magnetized and diametrically magnetized magnets are available.
Before mass production or purchase order placed, we will mail samples to our customer for their confirmation. Samples usually are free while customers have to pay for the freight.
Usually for small order, our lead time is about 2 weeks. Fast delivery can be ensured.
We have not received any complaint about the quality of our magnets such as magnetic property losing after a period of time or coating peeling and so on..
Packed in small box and then standard export cartons with magnetism shielding foil
Material: sintered ndfeb magnet
Grade: N48
Dimensions: 2" L x1" W x 1/2" T
Tolerances:
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (through 1/2")
Max Operating Temp: 176oF (80oC)
Application: Wind Turbine
Since the first oil crisis in 1973 and the radiation leak at Fukushima in 2011, more and more eyes on wind power. For example, affected by the nuclear leakage accident in Japan, Germany will plan to abandon nuclear power to generate electricity completely. And the same time, strive to develop new & Renewable Energy, such as wind power and solar energy. Refer to wind power, magnet which plays important role in wind turbine generator to generate power cannot be ignored.
At present, the magnet which used on wind turbine alternator is Sintered NdFeB magnet (Commonly known as magnet king, permanent magnet, rare earth magnet);
The common grades are N42, N48, N50, and N38SH and so on;
The common shapes are segment, block, wedge, and trapezoid;
The coating is Ni-Cu-Ni triple plated
The biggest block magnet for wind turbine generator is about 240x80x40 mm (the thickness cannot over 50mm)
The normal block size is 2 (2 inches x 1 inch x 1 inch)
China also develops wind energy rapidly these years. In 2011, there is half Wind Power Equipments for the whole world made in China. In this field, China is ahead of Germany and USA, and dominates the industry. This mainly depends on domestic magnet manufacture. Recently, considering high cost in purchasing wind turbine from China, many customers plan to purchase accessories and material and make wind turbine by themselves. Of course, this includes magnet purchase from China.
China magnet source care customers benefit and will provide Wind Turbine Permanent Magnet with good quality, reasonable price; to satisfy customers requirement in making family-type or industrial wind turbine.
1. To delivery by air or by express: Anti-magnetic package (six sides iron sheets in the carton);
2. To Ship by sea: normal hard Paper Carton and Pallet;
3. To as per clients' special requirements.
Material: ferrite
Grade: y30bh
Dimensions: 150lx100wx25t mm
Tolerances: 0.2mm
Plating/coating: no
Magnetization direction: axial (through 25mm)
Max operating temp: 482of (250oc)
Application: separator magnet
With the high speed of replacement of electronic products and the dwindling of non-renewable resources, more and more people begin to pay attention to the electronics recycling industry. Walking in a residential area, you will find people sitting on the road side with the billboard of home electric appliance recycling. Japanese is using the recycled aluminum, iron and other resources to build their own "urban mines". Compared with the country which only uses their nature resources, japanese is wiser.
The magnetic separator is equipment used on recycling industry to distinguish the ferrous and non-ferrous, copper, aluminum and plastic. Their work mainly depends on the function of magnetic force and alternating magnetic field.
There are hard magnet and soft magnet. The magnet used on separator is hard magnet. Hard magnet is classified into five categories: sintered ndfeb, bonded ndfeb, ferrite, samarium cobalt, alnico. Only strong magnetic force can separate metal and non-metal apart. According to this, separator magnet is generally sintered ndfeb. At the same time, to consider magnet cost, big block ferrite is also an option. Samarium cobalt, alnico, and bonded ndfeb are not strong enough on magnetic force and high cost, so don t in considering the scope.
The shape of separator magnet is block. Like ferrite, the size is 6 . The size of sintered ndfeb depends on the design of magnetic equipment manufacturer. Every company will choose size and grade of permanent magnet according to their application.
1. To delivery by air or by express: anti-magnetic package (six sides iron sheets in the carton);
2. To ship by sea: normal hard paper carton and pallet;
3. To as per clients' special requirements.
Material: sintered ndfeb
Grade: n45
Dimensions: 25 od x10 id x20 thick mm
Tolerances: 0.05mm
Plating/coating: ni-cu-ni (nickel)
Magnetization direction: axial (poles on flat ends, through 20mm)
Max operating temp: 176of (80oc)
Application: industry magnet
The rare earth permanent magnet is widely used in industrial fields as well as high-tech science and technology, which including electrical, automotive, instrumentation, medical, communications, mechanical and electrical, electronic and electro-acoustic, aerospace and other technology areas. Our company adheres to the "customer first, positive ahead¡¡à as our business philosophy, insists on the principle of" quality first "to provide high quality service for our clients.
1. To delivery by air or by express: anti-magnetic package (six sides iron sheets in the carton);
2. To ship by sea: normal hard paper carton and pallet;
3. To as per clients' special requirements.
Material: sintered ndfeb
Grade: N35
Dimensions: 15 d x 3 thick mm
Tolerances: 0.05mm
Plating/coating: ni-cu-ni (nickel)
Magnetization direction: axial (poles on flat ends, through 3mm)
Max operating temp: 176of (80oc)
Application: industry magnet, packing, box
The rare earth permanent magnet is widely used in industrial fields as well as high-tech science and technology, which including electrical, automotive, instrumentation, medical, communications, mechanical and electrical, electronic and electro-acoustic, aerospace and other technology areas. Our company adheres to the "customer first, positive ahead as our business philosophy, insists on the principle of" quality first "to provide high quality service for our clients.
1. To delivery by air or by express: anti-magnetic package (six sides iron sheets in the carton);
2. To ship by sea: normal hard paper carton and pallet;
3. To as per clients' special requirements.
Permanent ferrite magnet is made of sro or bao and feo by ceramic processing 23technology. Now we have many grades such as y20, y25, y30, y30bh, y35 etc. And we can produce them in a variety of shapes including disk, cylinder, block, segment etc.
Ainico permanent magnet is an alloy magnet made from ai, ni, co fe and other trace metal elements and may be produced through either sintering or casting process. The product has remarkable resistance against corrosion and high temperature, and is mainly used in certain precision instruments.
Smco magnet is a high-capacity permanent magnet made from sm, co, fe and other trace metal elements. Besides a markable resistance against corrosion and oxidation. Hence, it may be used in aeronautic and space industries among others.
We can supply magnetic motor parts made of magnet and metal core or shaft according to our der, plain grinder and milling machine etc. Please send us your design and requirement, we will give you perfect soluti
