News -China Rare Earth Permanent Magnet Manufacturers

Application of Neodymium Permanent Magnets in Speakers 20191127

2019-12-03

It is well known that the good or bad of speakers can affect style entire sound system. Good have their own personality. The quality in system restored as a restore device, and directly expressed by speakers. In other words, speaker plays decisive role overall system, while magnet rare earth … It is well known that the good or bad of speakers can affect the style of the entire sound system. Good speakers have their own personality. The sound quality of the speakers in the sound system is restored as a restore device, and the sound quality is directly expressed by the speakers. In other words, the speaker plays a decisive role in the overall sound system, while the magnet plays a decisive role in the speakers. The rare earth neodymium permanent magnet is a very good material for making the speaker. Initially due to cost problems, neodymium magnets were only used in medical MRI, aerospace and other fields. It wasn't until 2006 that JBL, the world's audio giant, began using neodymium magnets as a magnetic material for speakers in the field of high-end audio, and its advantages were immediately demonstrated: small, light weight, high sensitivity, low distortion, and a small-power amplifier. Now the field of professional audio is moving in this direction, and become the main selling point of manufacturers. How the speaker works: the permanent magnet generates a magnetic field in the ring air gap of the magnetic circuit through the moth, and the sound ring connected to the speaker's paper basin is inserted into the ring air gap. The permanent magnet is surrounded by the outer tin, thus protecting it from the interference of the stray magnetic field, which in turn can also reduce the influence of the permanent magnet magnetic field on the outside world. When the sound passes through the magnetic field in the form of an electric current, the coil will produce different frequency vibrations due to changes in the current strength, which in turn causes the paper basin to make different frequencies and strong and weak sounds. Magnets with rare earth neodymium magnets instead of traditional ferrite or Alnico and other magnets, not only can improve the sensitivity of the speaker, but also make the magnet use greatly reduced. If you are interested in above speaker neodymium magnets, please feel free to contact China Rare Earth Magnet Limited. Tags: permanent magnet, neodymium magnets, speaker magnets View Details

Application of Powerful Neodymium Magnets in Medical Field 20191115

2019-11-19

The neodymium permanent magnet is a high-tech material for the National 863 Project. What can produce biological magnetic field that simulates characteristics of human and performance stable! Our understanding strong may be limited to magnets electrical electronic appliances. In fact, in … View Details

Is it better to use electromagnet or permanent magnet in motor

2019-10-22

For the motor industry, customers often have such concerns when purchasing magnets: permanent magnets or electromagnets, which are better to be installed in motor? Permanent magnet has high coercivity and remanence. Once being magnetized, it can maintain a uniform magnetic material. … View Details

Application of Neodymium Magnets in Robot Industry

2019-09-26

The rapid development of the intelligent robot industry will open up consumption space neodymium magnets in future. NdFeB are mainly used sensors and drive motors for robots. Combined with relevant forecasts International Federation Robotics, it is expected that next few years, growth rate … View Details

Application of Permanent Magnets in Air Conditioning Compressor

2019-09-06

The compressor of variable frequency air conditioning is an important application field the permanent magnet material. current air-conditioning uses magnets that are divided into ferrite and high-performance neodymium magnets. magnetic performance material low, which will demagnetize … View Details

What are the benefits of neodymium magnets for motors?

2019-09-02

We found that a large part of the motor uses neodymium magnets, so why? What are benefits? Today we will explain it to you. Here is introduction advantages arc magnets for electric motors. The permanent magnet with small size, light weight, high torque-inertia ration, servo system … View Details

Special Magnetic Assembly for Outdoor LED Lamp and Display Screen Fixation 20190815

2019-08-16

China Rare Earth Magnet Limited can produce a special magnetic assembly for outdoor LED lamp and display screen fixation. Here please check the brief introduction of this kind assembly. Material: Neodymium Magnet+M3/M4 Screw Coating: ZincMagnetization direction: Across … View Details

45x13mm Green Magnetic Name Badges 20190227

2019-03-07

Our magnetic name badges are made from the neodymium assembly material with highest force, which means will attach firmly to your clothing, no need for any pins or clips. It is very useful conference, office, school, hotel, trade shows, etc. Product: Name TagsSpecification:Material: Steel … View Details

Neodymium Motor Magnets Manufacturer 20181211

2018-12-19

China Rare Earth Magnet Limited specializes in researching, manufacturing, developing and selling rare earth neodymium magnets, sintered radiation ring magnets magnetic assemblies that our annual output of more than 300 tons. Covering an area 40,700 square meter modern standard … China Rare Earth Magnet Limited specializes in researching, manufacturing, developing and selling rare earth neodymium magnets, sintered neodymium radiation ring magnets and magnetic assemblies that our annual output of magnets more than 300 tons. Covering an area of 40,700 square meter modern standard factory, our company is fully implementing lean shop floor management and we have passed IATF-16949:2016 and a variety of relevant system certification. Technicians and management team members in our company all have many years of neodymium magnets industrial experience, while we also have set up enterprise and postdoctoral workstation. In 2013, we built an R&D center called “Low Dysprosium and High Coercivity Sintered Neodymium Magnets”. Our products are widely applied to many fields such as permanent magnet motors, electric trolleys, elevator tractors, magnetic resonance imaging, voice coil motors, electro-acoustic devices, sensors, wind turbines, magnetic separators, IT, power tools, etc. Compared with conventional electric motors, industrial permanent magnet motors have the advantage of high energy-efficient, simple design, miniaturized products. Servo motor magnets: 35SH, 38SH, 42SH, 28UH, 30UH, 33UH, 35UH, 38UH, 33EH, 35EH, 38EH.Linear motor magnets: 38M, 42H, 48H.Joint driving motor magnets of robots: 44H, 42SH, 44SH, 38UH.The machine tool motor magnets: 42SH.Other motor magnets: 35H, 40H, 35SH, 42SH and so on.Automobile is an important and intensive application filed of neodymium magnets. Magnets in automobile motors and parts play an important role in improving automotive comfort, controllability, energy efficiency, light weight and intelligence. Magnets in automotive motor field:New energy automobile motors: 38SH, 35UH, 38UH, 35EH, 38EH, 40EH.Power steering wheel motors: 45H, 48H, 38SH, 40SH, 42SH, 48SH, 35UH.Oil pump motors: 33UH, 35UH.Active suspension system motors: 42SH.Starting motors: 38UH.Sunroof motors: 35M, 38H. Magnets in the field of sensor:ABS system sensor: 44H, 42SH.Camera sensor: 42SH, 33EH. Magnets in other fields:Electric generator: 38UH.Suspension system: 42SH.Ignition coil: 30UH, 33UH, 35UH, 33EH.Loudspeakers box: 38H, 40H.Gearbox: 38UH, 35EH. With the progress of technology and the development of era, the application of gearless permanent magnetic tractors has become the mainstream of elevator motor. On today and tomorrow, the land resources are more intensive, when the advantages of gearless permanent magnetic tractors will be more prominent because of theirs high energy-efficient, maintenance-free, machine-room-less. Permanent magnetic elevator tractors: 48H, 35SH, 38SH, 30UH, 35UH, 38UH. Permanent magnetic wind driven generators are usually using block magnets, 38H, 40H, 44H are the common grade of magnets to use, but some magnet manufacturers might use other grades such as 38SH, 40SH, 42SH, 38UH. Receiver-speakers: 45M, 48M, 42H, 45H, 48H.Coreless vibration motors: 38UH, 42H.Switch sensor: 44H, 42SH.The laser pickup system: 48M, 50M, 48H, 38SH.Others: N35, N42, N45. Variable frequency air-conditions: Compressor: 42SH, 44SH. Speakers: N35, N42, N45, N48, 45M, 38H, 40H, 42H, 48H, 50H. China Rare Earth Magnet Limited truly hopes to deepen a closer cooperation with our customers, and to realize common development. Tags: neodymium magnets, motor magnets, magnet manufacturer, China magnet View Details

Permanent Magnet Synchronous Toothless Traction for Elevator 20180830

2018-09-04

Permanent Magnet Synchronous Toothless Traction for Elevator 20180830 Professional elevator installation manufacturer explains how permanent magnet synchronous toothless traction machine works. Structure of Machine:Traction machine, also called reducer, is a … Permanent Magnet Synchronous Toothless Traction for Elevator 20180830 Professional elevator installation manufacturer explains how permanent magnet synchronous toothless traction machine works. Structure of Permanent Magnet Synchronous Toothless Traction Machine:Traction machine, also called reducer, is a device used for elevator. Usually, it is placed in the engine room on the top floor. The rope sheave of traction machine tows elevator and counterweight. This machine consists of turbine reducer, rope sheave, electric motor, coupling, brake and base etc. Permanent magnet synchronous toothless traction machine is made up of permanent magnet synchronous motor, traction sheave and brake system. Thanks to its high performance permanent magnetic material and special design of electric motor, traction machine is low in speed and high in torque. Traction sheave and brake wheel are concentric coupled and installed on the CDE drive end of motor. Brake system is made up of brake shoe, brake wheel, brake arm and brake scotch. Working Principles and Features of Permanent Magnet Synchronous Toothless Traction Machine:Working principles and features of permanent magnet synchronous toothless traction machine: the power of motor is carried from CDE drive end to traction sheave, thus torque is outputted. And the friction between traction sheave and cable drives the elevator. When the elevator stops, brake scotch jams on the brake wheel. Thus, the elevator keeps still. Permanent magnet synchronous toothless traction machine adopts rare earth material, outer rotor-structure, permanent magnet synchronous motor driving. Worm gear is removed from this machine which is a perfect combination of concentric drive technology, digital variable frequency technology and group computer combination technology. All those factors endow it lots of qualities: small in size, high driving efficiency, quiet, energy-saving, long lifetime, comfortableness and low maintenance rate. Gear reducer is removed and traction sheave is directly installed in CDE drive end of motor. Without mechanical loss of gear reducer and excitation loss of asynchronous motor, power factor has narrowed almost to1. This efficient machine consumes 40% less energy than asynchronous AC geared traction machine. Different from narrow high- efficiency-range of asynchronous traction machine, synchronous traction machine has flat efficiency curve which means it has an advantage in energy conservation even in the case of low loading rate. Asynchronous VVVF motor is outclassed by permanent magnet synchronous toothless traction machine. As traction sheave is free from variance of instantaneous angular velocity caused by manufacturing precision, this machine is quieter and more comfortable. It can be used in fine elevator. Compact structure and small volume of traction machine enable it be installed in small engine room. The design of supporting parts, base, for instance, has optimized, which means it can bear more weight. Without gear reducer, it can get rid of oil spill. As a result of the adoption of fine bilateral-seal bearing, there is no need of lubrication and maintenance in most cases. Schematic drawing of permanent magnet synchronous toothless traction machine is as shown in Figure 2. Operating System of Permanent Magnet Synchronous Toothless Traction Machine:Three-phase AC variable frequency power supply that has a servo transducer inside is adopted in permanent magnet synchronous toothless traction machine. The process that transducer slows down or speeds up the traction machine is call braking. Braking makes power return from traction machine to transducer. When transducer brakes traction machine, regenerated power that can be adopted by transducer is equal to power consumption of transducer. When regenerated power maybe greater than power consumption, the voltage of DC bus in transducer increases. That is the reason why suitable BR (brake resistance) is added to the operating system of traction machine — to release regenerated power. When traction machine operates in low speed and heavy current, the disconnection of the output circuit of transducer may lead to severe arc discharge. As a result, KC is installed between transducer and traction machine. Only when the output of transducer is off can the KC come in to use. ---Posted by Elevator Magnets Manufacturer China Rare Earth Magnet Limited on 20180830 View Details

Applications of NdFeB Neodymium Permanent Magnets 20180705

2018-07-05

For Wind powerNeodymium permanent magnets are used for direct-driven PM wind power generator, which have the characteristics of simple structure, low cost operation and maintenance, long service life, great performance grid connection, high generation efficiency, etc. And it can also be … View Details

N38UH Neodymium Block Magnets for Car Industry 20180509

2018-06-05

Inquire 38UH Neodymium Permanent Magnets for Car Industry:Below I am sending you all the data need quotation: -Grade: 38UH-Shape: Block-Dimension: *x*x*mm-Magnetisation: not magnetised-Max. Working temperature: 180°C-Coating: NiCuNi-Magnets have to be packed in … View Details

Neodymium Disc Permanent Magnets for Electronic Products 20180408

2018-04-11

Requirement of Round Permanent Magnets for Electronic Products:We are pleased to introduce ourselves as leading manufacturers Weighing Scales, Currency Counting Machines and Digital Fare Meters.We in need disc magnet without magnetizationDiameter **mmHeight: **mmGrade: N42 Neodymium … View Details

SmCo Magnets for Experiment in Laboratory 20171102

2017-11-02

Inquire SmCo Magnetic Ring:I am looking for rings experiment in laboratory. Magnet Specification- magnets- Ring Size: O.D., *", I.D., ****"; thickness, ***"I have some questions:1. How much maximum working temperature of this permanent magnet?2. intensity?3. If I buy it. … View Details

Custom Ferrite Ring Magnets for Vacuum Pump 20171016

2017-10-16

Custom Permanent Magnet Ring for Vacuum Pump:Can you make the magnets as per drawings (application vacuum pump) Please let me know that if are capable of these magnetsIf yes, please offer to meFerrite Magnets Manufacturer China Rare Earth Magnet Limited:Please kindly … Custom Permanent Magnet Ring for Vacuum Pump:Can you make the magnets as per the drawings (application for vacuum pump) Please let me know that if you are capable of these magnetsIf yes, please offer to meFerrite Magnets Manufacturer China Rare Earth Magnet Limited:Please kindly check the quote below.Ferrite Magnetic MaterialRing Shape, Sizes as per drawingsSouth surface with identification dotMagnetic Properties: as per drawingNone CoatingMagnetized through thicknessMold Fee: USD***FCA Shanghai USD***/pc Documents & Manufacturing Capacity:My customer normally requests documents like material certificate, test report. Can you supply those documents?And as customer is British company so such documents should be in English? I believe that you are capable of manufacturing the same magnets as our drawing,But, have you previously manufactured and supplied the specification of magnets same as our drawing’s specification?Yes, we can supply material certificate and test report in English after production finishes. Custom Ferrite Permanent Magnets Manufacturer China Rare Earth Magnet Limited:We manufactured similar large ferrite ring magnets, but not in the exact sizes you request, so molding will be needed.But for the last two small ones, we once produced them, so molding is unnecessary. Price Term & Samples:My customer need to start serial production soon with the below specified magnetsI have some questions as below, please check and clear with meYour price is FOB Shanghai sea port? Are you able to Certificate of origin?I need 15 ~20 samples to meet the drawing specifications with the proper documents for our customer’s approval. Can you send some information about our magnet manufacturing process? Custom Ferrite Ring Magnets Manufacturer China Rare Earth Magnet Limited: The quotation is based on FCA shanghai not FOB shanghai.We can provide Certificate of origin for bulk order.According to our technician's confirmation, samples can be made without making molding. Molding is necessary to make prior to bulk production.The total sample fees US$*** excluding shipping cost.For the dent marker, we will mark white dot on South Pole face as identification by instead.As for the production process, ferrite is produced by iron oxide combined with strontium, through Pre-sintering, Smashing, Powdering, Pressing, Sintering and Jet milling.Permanent Magnets with Marking:Please make diamond drill for identification for samples as well, because if anything different from the drawings, our customer never approve our magnets samples (just wasting time and money)Please confirm that all price for samples for 20pcs each and lead timeFerrite Magnets Manufacturer China Rare Earth Magnet Limited:The total price for sampling and modeling fees is US$***.In addition, the production time is 20-25 days.If you confirm it, we will send you pro-forma invoice and shipping cost. View Details

D25x200mm Cylindrical Permanent Magnet, Magnetic Bar for Food Industry 20170906

2017-09-07

Looking for Cylindrical Magnet:Please could you help me and quote, 50 units of cylindrical permanent magnet (200 x 25mm) over >9000 gauss, Inox 304/316 food industry.Magnetic Filter Manufacturer China Rare Earth Magnet Limited: Please kindly check the quote below. … View Details

Neodymium Permanent Magnets for New Energy Automobile 20170824

2017-08-24

With simple structure, high power density and light weight, performance neodymium permanent magnet synchronous motors become main choice of new energy automobile motors. Comparing with other types motors, same weight volume, PM can provide the biggest output accelerated speed. … View Details

N38UH Neodymium Block Magnets for Electric Motor 20170810

2017-08-11

Inquire Motor Magnets:These permanent magnets are for prototype electric motor.We building motor in short term which we will need *** as I have specified.In the medium-term, an additional approximately.As mentioned it is possible us to substitude a single neodymium magnet with several … View Details

Neodymium Disc Permanent Magnets for Necktie Clip 20170727

2017-07-27

China Rare Earth magnet Limited manufactures neodymium permanent magnets in disc shape for necktie clip, like N52 D8x3-3.5mm with NiCuNi coating. In some formal occasions, when men wear shirt, tie and suit, clip is a practical fashionable men’s clothing accessory order to keep … View Details

Flexible NdFeB or Ferrite Permanent Magnet 20170719

2017-07-19

Looking for Flexible Permanent Magnet Manufacturer:I am looking NdFeB, anisotropic, flexible magnet, minimum pull strength of 70g/cm2, considering between 1.0mm-1.5mm thickness, need PVC backing with capabilities temperatures up to 70℃. Could you tell me what have in those thicknesses … Looking for Flexible Permanent Magnet Manufacturer:I am looking for NdFeB, anisotropic, flexible magnet, minimum pull strength of 70g/cm2, considering between 1.0mm-1.5mm thickness, need PVC backing with capabilities of temperatures up to 70℃. Could you tell me what you have in those thicknesses and what the pull strength would be? I will be cutting them in shapes of ***X***mm. Flexible Magnets Manufacturer China Rare Earth Magnet Limited:Please check the following quotation:Material: Flexible NdFeB MagnetsPulling Strength: 70g/cm2Size: *** x *** x 1.5mmSurface Treatment: with PVCMulti-poles on one SideFCA Shanghai USD***/pcAs mentioned in your inquiry, you need PVC backing with capabilities of temperatures up to 70℃. Could you please advice how long will be PVC or the magnet be exposed to 70℃ consecutively?Working Temperatures:Most of the time, the magnet will be at room temperature. There will be periods, probably last 15 minutes every hour, where the max temp may be reached.Is the thickness of the NdFeB 1.5mm, required to achieve 70g/cm2? We need to find a more economical option. The customer will not pay this much. I would like to consider the costs of:1.5mm NdFeB isotropic.1.0mm NdFeB isotropic/anisotropicAlso, what is the max pull I can from a ferrite flexible permanent magnet of 1.5mm that you could produce?Flexible NdFeB Magnets Manufacturer China Rare Earth Magnet Limited:Yes, the thickness of 1.5mm is able to achieve 70g/cm2.The price of 1mm neodymium rubber magnets will be the same as the price of 1.5mm thickness.Please check the following ferrite flexible magnet quote:Material: Ferrite Rubber Magnet, Other specifications are the same USD***/pcPulling Strength:Is 70g/cm2 the max pull for 1.5mm NdFeB flexible magnet? That seems low. Is it anisotropic?What would the pull strength of 2.0mm NdFeB magnet? Would the price be the same?Flexible Ferrite Magnets Manufacturer China Rare Earth Magnet Limited:First, 70g/m is the minimum pulling strength. The pulling strength shall only be tested when the magnets are finished.Second, there is no anisotropic or isotropic for NdFeB flexible permanent magnets.The terms of anisotropic and isotropic are only for ferrite flexible magnets.Similar Products:Flexible Neodymium Magnets 20150817 Permanent Magnetic Soft Screen Door Rubber Magnetic Sheet 20141219-2Rubber & Plastic Permanent MagnetW620mm x T0.4-0.7mm x L30.5m Flexible Permanent MagnetRubber Magnetic SheetFlexible Permanent Magnet with Adhesive Tape for Magnetic Screen Window, Advertising, TeachingPermanent Magnet StickersCustom Rubber Magnets 20150706A4 Colorful Rubber Magnetic Sheet 20150211 Strong Rubber Flexible Magnetic Strip 20150206 Car Magnets 20150108China Flexible Permanent Magnetic Sheet Manufacturer View Details