News -China Rare Earth Permanent Magnet Manufacturers

Large Neodymium Permanent Magnets for Undulator 20170707

2017-07-07

China Rare Earth Magnet Limited has some customers, who request permanent magnets for undulator, like N50M neodymium arc in large sizes, with cutted sides, Nickel coating, working temperature 80 ℃. Customers usually send us drawings enough information. A few of them require spread … China Rare Earth Magnet Limited has some customers, who request permanent magnets for undulator, like N50M neodymium arc magnets in large sizes, with cutted sides, Nickel coating, working temperature 80 ℃. Customers usually send us drawings with enough information. A few of them require spread of magnetization less than 0.5%. Large Neodymium Magnets What is “spread of magnetization”? Similar Products As for the spread of magnetization of large neodymium magnets, it can only be tested when the magnets are finished. The size is very large and we do not have magnets with similar size in stock, so we are not able to estimate the value. But we can assure that the magnets will be produced with China's highest technology and standard. China Rare Earth Magnet Limited can supply large neodymium magnets used in undulator, as per current production status, delivery time for 300pcs is about 50-60 working days. Recently, Nd raw material price is rising rapidly and tends to increase continuely, price validity is only 2-7days.What is “spread of magnetization”?Some people may don’t know spread of magnetization, may think it as the consistency of Br value or surface gauss value or the magnetization angle error. It is the spread of the component of magnetization vector (it's module is Br/(mu0)) along the direction of the thickness edge, averaged over the magnet volume. It usually can be measured by two methods. One is to measure the field far (about 1 m) from the magnet and then to calculate its total dipol magnetic moment. Typically it can be fixed to the hall probes at some positions and use a guide detail to install each testing magnet in the same position. Another one also measures the interesting component of the total dipole magnetic moment vector by inserting the magnet into the special solenoidal coil and integrating the voltage on coil over time.For some customers, the surface field is not good specification in their case, as the neodymium permanent magnet is large, and magnetization may be different in different points of it. Similar ProductsNeodymium Arc MagnetsNeodymium Block MagnetsCustom Neodymium Magnets View Details

Ferrite Permanent Magnets for Fan BLDC Motor 20170512

2017-05-15

Ferrite Ring Magnets with Multi-poles through Thickness for Motor Application China Rare Earth Magnet Limited manufactures ferrite motor magnets. Some customers required ring permanent magnets multi-poles used in fan BLDC motor. They usually give us OD, ID, thickness, poles and … Ferrite Ring Magnets with Multi-poles through Thickness for Motor Application China Rare Earth Magnet Limited manufactures ferrite motor magnets. Some customers required ring ferrite permanent magnets with multi-poles used in fan BLDC motor. They usually give us OD, ID, thickness, poles and magnetization direction, grade or magnetic properties like Br, Hcb, Hcj, BH, etc. Ferrite Motor Magnets Inquiry - For example:---Look for Ferrite Ring Magnets Ferrite Ring Magnets: We are working on new motor which need ferrite magnetic ring.Type – Permanent Magnet Size: *OD-*ID-*T10 poles Application – Fan BLDC motorBr>4100Gs, Hc>2800Oe, Bhmax>4.0MGOeBased on the above parameters mentioned, please suggest the grade.---Ferrite Magnets Manufacturer China Rare Earth Magnet Limited:Please kindly check the quote below.Ring shape, none coating, 10 poles through thickness Ferrite Permanent Magnet Material/Unit price USD*/pcWe do not have the magnets in stock, so samples will have to be customized, but molding is necessary for this kind of magnets. Related Knowledge: What is brushless DC motor? Brushless DC motor is mainly composed by permanent magnet rotor, multi-poles coil stator and rotor position sensor. The characteristic of brushless dc motor is brushless, adopting semiconductor switch devices (like hall element) to realize electronic commutation. It uses electronic switch device instead of traditional contact commutator and brush. Brushless DC motor has advantage of high reliability, no commutation spark, and low mechanical noise. The position sensor converts the current of stator winding along a certain sequence according to the variation of rotor position, (i.e. to detect the position of the rotor magnetic pole relative to the stator winding, and generate the position sensor signal in determinate location, to control the power switch circuit after processing signal conversion circuit, and to switch winding current according to a certain logic relation). What is a brushless dc fan? There is no carbon brush contact between rotor and stator in brushless DC fan. The rotation is achieved by the interaction of the magnetic force in the magnetic field. According to the different voltage, brushless fan is divided into ac voltage brushless fan and dc voltage brushless fan two main types. It works mainly by pushing fluid motion caused by blade rotation pressure, to transfer energy to the surrounding fluid in dynamic way, and to force air flow and remove the heat generated by the system to the outside environment. View Details

Neodymium Block or Ring Magnets 20170504

2017-05-04

Neodymium Permanent Magnets for Magnetized Water Technology Look Block of 3000 to 6000 Gauss:I would like request price quotation neodymium magnet with 3,000 6,000 gauss. Plating is any black material (is that Ni?). Direction North and South lengthwise widthwise.I test the effect on plant … View Details

N50M Permanent Magnets 20170420

2017-04-20

Custom Neodymium Block Magnets in Grade N50MLooking for N50M or N52M Permanent Magnets:For our application I am looking a supplier of neodymium block magnets. To be more specific:Neodymium Magnet Axial magnetizedNickel CoatedMagnetization 50M and 52M (if possible)First all … View Details

Permanent Magnets for Whiteboard Eraser 20170415

2017-04-15

Ferrite Magnets Manufacturer China Rare Earth Magnet Limited Look for Permanent Writing Instruments: First of all, we would like to introduce our company as one the largest manufacturers in world specializing writing instruments commercial and educational use. The ranges produce … View Details

What is One-side Magnets?

2017-03-24

Neodymium Permanent Magnetic Assembly Manufacturer China Rare Earth Magnet LimitedAs we all know, naturally, permanent magnet has two poles: N and S. But, however, there are some occasions that need one-pole magnet, is, magnetism on only one side of the magnets, or else, will disturb other … View Details

Halbach Permanent Magnetic Motor 20170314-2

2017-03-19

Halbach Magnets Manufacturer China Rare Earth Magnet Limited In 1979, American scientist Klaus developed a new design---Halbach Array. Compared with the conventional permanent magnets, magnetic field of is one-sided field. Consequently, this kind array can be applied to motor amplify … View Details

Permanent Rotor Magnet 20170313-2

2017-03-18

N52 Neodymium Arc Magnets for Outer and Inner RotorLook Rotors: I would like to order magnets. attached the drawing files of arc magnets. One is an outer rotor (26 pieces) other inner pieces). them be NdFeB, permanent magnets with black epoxy coating.Please note polarization should … View Details

Permanent Magnet for Kitchen Cabinets 20170312-2

2017-03-17

Kitchen Cabinet Magnetic Assembly: N33 Neodymium Magnets + Stainless Steel Plastic CoverLook for Cabinets: We are looking to buy these permanent magnets from you: Strength: 5kg, block shape, finish: stainless steel.We using them kitchen cabinets, no extreme temperatures there, just a in … View Details

Permanent Magnets for Outdoor Products 20170310-2

2017-03-15

Neodymium Ring Magnets with Everlube Coating for Outdoor ProductsLook Products: I am developing an outdoor product that requires the use of ring permanent magnets (neodymium). The magnet needs to have be a shape required size. Since it will used outdoors, very good protective coating … View Details

Permanent Magnet for Motor 20170309-2

2017-03-09

Permanent Magnet for Motor 20170309-2The Smallest in the World: Copper + Battery Neodymium MagnetsWhen electrons move magnetic field, there will be a force to them that perpendicular field direction and moving at the same time, namely Lorentz Force. And smallest acyclic motor just lies on … View Details

Block NdFeB Permanent Magnets for Shackles 20170228

2017-02-28

Block NdFeB Permanent Magnets for Shackles 20170228N42 Neodymium Installed in a device that is Worn on the AnkleLook N42 Manufacturer: We would like to know if you have standard magnets correspond bellow specification: Dimension (mm): block shape with tolerance *** Material: … Block NdFeB Permanent Magnets for Shackles 20170228N42 Neodymium Block Magnets Installed in a device that is Worn on the AnkleLook for N42 Neodymium Permanent Magnets Manufacturer: We would like to know if you have standard magnets that correspond to the bellow specification: Dimension (mm): block shape with tolerance *** Material: NdFeB, Grade N42Plating: Ni-Cu-Ni (Nickel)Magnet direction: Thru ThicknessPull force: Min. of 500g; no max. Force spec. Estimated quantity: 10 000 per year.We would like to know what the best corrosion plating you could provide on magnet is. What specification and thickness of electro-plating? We would like to know if it could be possible to produce 300 to 600 magnets in two weeks period.NdFeB Magnets Manufacturer China Rare Earth Magnet Limited:Our production team replies that we can produce 300-600pcs within 2 weeks period.Regarding what the best coating is, we'd like to know how working environment of the permanent magnet. Choosing a kind of coating should be depended on working environment. Do they need to work in humid or other harsh environment?If not, then NiCuNi is suitable for the magnets. Thickness is only 9-20μm.We can also provide many other kinds of coating, such as black epoxy, gold, silver, etc. However, magnets with different coating will have different price. Application and Working Environment: The neodymium block magnets will be installed in a device that is worn on the ankle 24x7 (cannot be removed). The device is used to track people who would otherwise be in prison. Only a policeman can remove the device from the ankle. The magnets will be open to all environmental conditions indoors and outdoors. This can include extended exposure to sea water, sea spray, hot tub chemicals, etc. I believe that nickel electro-plating should be sufficient if thick enough and complete coverage of the plating. What are your recommendations?NdFeB Permanent Magnet Manufacturer China Rare Earth Magnet Limited:NiCuNi coating will easily corrode if magnets expose to water or sea water for a long time.NiCuNi is suitable for only normal environment. We suggest you try NiCuNi + Black epoxy, but the price will be a bit higher. Material: N42 neodymium block magnetsCoating: Ni-Cu-Ni + Black EpoxyUnit price: USD**/pc View Details

NdFeB Permanent Magnets for Shop Shelves 20170223

2017-02-23

NdFeB Permanent Magnets for Shop Shelves 20170223N35 Neodymium Block Used on ShelvesInterested in the Magnet: I am interested order of neodymium magnets two variants:1. – block shape Sintered nickel coated with adhesive tape one side.Capacity approximately 3 … View Details

Block Ferrite Permanent Magnets 20170217

2017-02-17

Block Ferrite Permanent Magnets 20170217Ferrite in Water TreatmentLook for Magnets: I’m looking Magnet Size: block shape as per requirement Qty required: 50000 piecesPlease send me the best price.Ferrite Manufacturer China Rare Earth Limited: Could you please kindly … View Details

Neodymium Permanent Magnets for Handheld Devices 20170213

2017-02-14

Neodymium Permanent Magnets for Handheld Devices 20170213N35 Block Mounted in DeviceLook Magnets Device:Magnets Specification* Material: permanent magnets, please advise the grade we need a holding force of approx. 8 kg* Size: shape as per requirement * Coating: … View Details

Permanent Magnets for Guitar 20170207

2017-02-08

Permanent Magnets for Guitar 20170207AlNiCo Magnet Rods and Bars Electric AlNiCo Magnets: I’m looking a new stable permanent magnet manufacturer mainly cast Alnico 2, 4 5 magnets in rods Alnico2, 3, 4, 5, 8 bars.Here are my additional questions: 1. Is it possible to order … View Details

Permanent Magnet Assembly 20170125

2017-01-25

Permanent Magnet Assembly 20170125N42 Neodymium Pot Magnets with A3 Steel CoversLook for Magnetic Assembly: Please submit offers on pot magnets the following two sizes: Steel cover + Screw 1) force: 3kgWorking temperature: Normal AtmosphericAnnual amount: 60k2) 9.5kg Screw: … View Details

Permanent Magnet Assembly for Clothes 20170117

2017-01-17

Permanent Magnet Assembly for Clothes 20170117Water-proof Magnetic Button Bib of BabiesLook with Neodymium Magnet + Square PVC Sleeve:I am looking a magnetic assembly to put into clothes.Magnets sewing square sleeve1. Size: Disc magnetMaterial: N42 MagnetCoating: rubber coated2. … View Details

The Choice of Tesla: Permanent Magnet Motor?

2017-01-10

The Choice of Tesla: Permanent Magnet Motor?Neodymium Magnets for Tesla Electric VehiclesIt is reported that nowadays purchasing large amounts of neodymium magnets the driving motor their electric vehicles. That to say, giving up traditional induction machine gradually, and … View Details

Spoke Magnet 20170104

2017-01-04

Spoke Magnet 20170104Magnetic Assembly: Neodymium Permanent + Steel Cover for Wheel Spokes of BikesLook Magnets Bike Spokes:We found you online because sell magnetic assembly - pot magnets. Do also offer permanent magnets that can be mounted to wheel spokes bikes? I attached an image … View Details