Neodymium Magnets in VCM (Voice Coil Motors)
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Neodymium Magnets in VCM (Voice Coil Motors)

  • SHINE

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Product Introduction

VCM (Camera focus mechanism)

Voice coil motors are normally used to drive audio speakers.  VCM is also used in other applications where precision is important.

Autofocus camera typically use Voice Coil Motors (VCMs) because VCMs are very fast and precise over short distances, and they are designed to move the speaker dome the same way a camera lens moves. Each camera's autofocus motor uses 2-4 magnets.

Magnet Attribute Parameter
Main Application VCM (Camera Focus Mechanism)
Place of Origin Ningbo, China
Brand SHINE
Grade From N35 to N52
Type of Coating Ni Coating, Zn Coating
Material NdFeB Magnet
Magnetic Force Customized
Size Customized Magnet Size
Processing Service Shaping, Sintering, Cutting, Plating
Re: The data above is only for your reference. Please contact us for more details.
Application Area

Consumer electronics: Electronics are one of the traditional applications of high-performance neodymium magnets. Taking smartphones as an example, there are over 10 components using neodymium magnets,


For example, microphones, micro speakers/receivers, vibration motors, wireless chargers, Bluetooth headphones, phone camera focusing, sensors, and so on. With the progress of science and technology, more and more smartphone accessories are made of neodymium magnets.


Consumer-Electronic-Application3

Different Shapes of Neodymium Magnets

Below are some common shapes of neodymium magnets. If you need to customize special shapes, please contact us and we will customize the best solution for you!


Different-Shapes-of-NdFeB-Magnets

Packaging & Shipping

Export Standard Cartons are supplied with foam well protected. We can make the packages according to customer's request.
Standard sea and air packages are available.

Packaging

Packaging

Shipping

Shipping

Magnetization Direction

The following are the conventional magnetization methods. If there are special magnetization requirements, please contact us for consultation!


Magnetization-Direction

Test Instruments

Shine Magnetics has focused on quality control since its founding. Necessary and strict checks and tests are taken in all production processes to make sure any products made by us are trouble free. To work with Shine Magnetics is to get the most reliable supplier of magnetic products. It goes without saying that our magnetic products comply with the highest quality standards. We are working continually to improve the quality and process of the products.


Neodymium Test Instruments


B-H Curver

B-H-Curver

Plating Testing

Plating-available-&-Tests

Aboving Tests Could be made as per customers’requirements:

HAST Test: Test Condition: 132.9℃, 95% humidity, 2.9 ATM, 7 days

Weight Loss: 3mg/cm2


Regular Coatings

Regular-Coatings

Properties Chart
HCj

HCj

Permanent Magnets Properties Chart

Permanent Magnets Properties Chart


*Shine Magnetics made the mass production of neodymium magnet(N52,N52M,N52H, N48SH, N45UH, N40EH, 33AH). We owns the most complete set of manufacturing facilities for timely producing tailored magnets that customer need.

*The highest grade of shine neodymium magnets retain a max working temperature of 220℃.

*After 168 hours of HAST test ( 2atm, 100%RH, 120℃) on the no coating N45SH NdFeB magnet, the weight loss is less than 3 mg/cm³. We always produce NdFeB magnets with high anti corrosion characters and low temperature coefficiency.

Physical Properties
Density 7.4 ~7.7 g /cm ³ Hardness 560 ~ 650 HV
Resistivity 120 ~ 160UΩ Thermal Conductivity 7 ~ 10 W / MC
Max Working Temperature 80 ~ 240 ℃ Curie Temperature 320 ~ 395 ℃
Br Temperature Coefficient 0.08 ~ 0.12% / ℃ iHC Temperature Coefficient 0.34 ~ 0.75% / ℃
Compressive Strength 1000 ~ 3000 N / mm ³ Bending Strength 250~ 400 N / mm ³
Young's Modulus 150~160 KN Situation Magnetization 30 ~ 40 MGOe
Magnetic Properties Parameters

Neodymium-Magnet-Magnetic-Properties


Production Process Of Sintered Nd FeB Magnet


Production-Process

About Us

data


NINGBO SHINE MAGNETIC TECHNOLOGY CO., LTD
We are a creative magnetic solution supplier. We specializes in researching, developing and producing magnets and magnetic products used in different industrial and customers`applications. Relying on right knowledge and experience in the field, aiming at the potential demands from customers, integrating the intelligence of our know-how experts, We have produced well recognized magnetic products.

Certificate

Our product testing meets quality standards.

Certificate1000
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We are constantly trying to improve ourselves in new thoughts, new technology and new working methods.
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