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Shanghai CJ Magnet Industry Co., Ltd.  

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Rare Earth Permanent Neodymium Ring Magnets Used In Speaker / Moptor 

Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: CJ169

Rare Earth Permanent Neodymium Ring Magnets Used In Speaker / Moptor
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Rare Earth Permanent Neodymium Ring Magnets Used In Speaker / Moptor

R20X10X6MM rare earth and permanent Neodymium Ring Magnets can be used in car speaker and motor

 

 

 

1 Description & Specification:

 

Sintered NdFeB magnet Strong permanent magnet with magnetic properties
Grades N33, N35, N38, N40, N42, N45, N48, N50, N52, (M, H, SH, EH, UH AH)
Coatings Nickel, Ni-Cu-Ni, Zinc, white-blue Zn, Black epoxy resin, Gold
Sizes customized
Shapes Disc, cylinder, sphere, block, ring, tile, arc, and other irregular shapes
Tolerance +/-0.05mm unless specified.
Magnetized direction Through thickness, diameter, axial, etc
Maximum working temperature 80 to 240 degrees C
Package Condition

Standard air/sea protective package, unless specified.

 

 

 

 

 

2 manufacture process:

 

Main steps:

 

1 raw material ready

 

2 strip casting

 

3 hydrogen broken

 

4 jet milling

 

5 magnetic pressing

 

6 sintering

 

7 magnetic property test

 

8 machining

 

9 electroplating

 

10 inspection

 

3 Coating

 

surface coating color Thickness(um) SST PCT
Nickel NI(NICUNI) Bright silver 10-20 >24-72 >24-72
Cr3+Zinc Zn/C-Zn   5-8 >16-48  
Sn NI+CU+NI+Sn silver 10-25 >36-72 >48
Epoxy Epoxy Black/grey 10-20 >48  
Passivation   Dark gray 1-3 Temporary protection  
Phosphate   Dark gray 1-3 Temporary protection  

 

 

 

4 applications & cooperated customers

 

Areas Coorporated companies
Wind energy Gold Wind Company
EPS mortor AMK company
Speakers Panasonnic
 

 

other applications car  computer  airplane  phone ans so on.

5 FAQ

 

1, Can you do the seicial designs for us?
Of course ,We have a professional team having rich experience in design and manufacturing just send us your design and tell us the dimensional tolerance, and we will produce the special moulds for your products and produce the products.

 

2, When can I inquiry or email or calling or skype you ?
We usually quote within 24 hours after we get your inquiry . If you are very urgent to get the price , please call us or tell us in your email so that we would regard your inquiry priority .


3, How can I get a sample to check your quality ?
After price confirmation , you can require for samples to check our quality . If you need the samples , we will charge for the sample cost . But the sample cost can be refundable after order confirmation when your quantity of the order is more about the MOQ .

 

6 why choose us

 

1 we have professional design produce and sales teams.

 

2 we have professional and advanced machines

 

3 our products are all in high quality

 

4 we have good after-service

 

5 all manufacture steps can be finished by our own.

 

 

 

 

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 Mr. Mrs. Amy

Tel: 86-21-52661981
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Company Info

Shanghai CJ Magnet Industry Co., Ltd. [China (Mainland)]


Business Type:Manufacturer
City: Shanghai
Province/State: Shanghai
Country/Region: China (Mainland)

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