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View more specifications Neodymium Ring Magnets for you
| Model No: |
N004 |
| Place of Origin: |
Zhejiang |
| Application: |
speakers, pot magnets, magnetic assemblies |
| Type of product: |
Neodymium magnets |
| Be made of: |
NdFeB magnets, Nickel coated |
| Certificate: |
ISO9001:2000, RoHS |
| Export Area: |
Germany, Italy, England, France, Turkey, Japan, America, India etc |
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Description
| Payment & Shipping Terms |
| Unit Price: |
US$0.1~10.0 |
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| Payment Term: |
T/T, L/C |
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| MOQ: |
1 Piece/Pieces |
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| Means of Transport: |
By sea, By air |
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| Supply Capacity |
| Production Capacity: |
800 tons of Neodymium magnets |
| Packing: |
Cartons |
| Delivery Date: |
7 to 12 days |
Neodymium ring magnets are usually made by drilling and machining hole on disc magnets and they also can be made a ring shape directly in pressing machines if order quantity is large enough to make a new tooling for it. For some bigger ring magnets we also have to mill the inner diameter and outer diameter in order to guarantee the suitable size before coating and finally they will be coated Nickel(Ni-Cu-Ni), Black Nickel, Zinc(Trivalent), Epoxy, Stannum, Gold, Silver or Parylene etc in order to keep from rusting. The highest grades for these products are N52, N48M, N44H, N42SH, N38UH and N35EH etc.
The biggest size is about D220 X d80 x 50mm and this kind of Neodymium ring magnets are usually used in loudspeakers, mobile phones, DC motors and other electronic products and magnetic assemblies.
Magnetic Property for NdFeB magnets (sintered)
No. | Grade |
Br
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Hcb
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Hcj
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(BH)max
| TW* L/D=0.7 | T KGs | KA/m KOe | KA/m
KOe | KJ/m3 MGOe | Nom | Nim | Nom | Nim | Nom | Nim | ºC | 1 | N35 | 1.22 12.2 | 1.18 11.8 | 907 11.4 | 860 10.8 | ≥955 ≥12 | 287 36 | 263 33 | ≤80 | 2 | N38 | 1.26 12.6 | 1.22 12.2 | 907 11.4 | 860 10.8 | ≥955 ≥12 | 303 38 | 287 36 | ≤80 | 3 | N40 | 1.29 12.9 | 1.26 12.6 | 907 11.4 | 860 10.8 | ≥955 ≥12 | 318 40 | 303 38 | ≤80 | 4 | N42 | 1.33 13.3 | 1.29 12.9 | 907 11.4 | 860 10.8 | ≥955 ≥12 | 342 43 | 318 40 | ≤80 | 5 | N45 | 1.37 13.7 | 1.33 13.3 | 907 11.4 | 863 10.5 | ≥955 ≥12 | 366 46 | 342 43 | ≤80 | 6 | N48 | 1.41 14.1 | 1.37 13.7 | 836 10.5 | 716 9.0 | ≥836 ≥10.5 | 390 49 | 366 46 | ≤80 | 7 | N50 | 1.45 14.5 | 1.41 14.1 | 907 10.5 | 860 10.8 | ≥836 ≥10.5 | 406 51 | 390 49 | ≤80 | 8 | N52 | 1.48 14.8 | 1.44 14.8 | 907 10.5 | 828 10.5 | ≥876 ≥11.0 | 414 52 | 394 49.5 | ≤70 | 8 | N35M | 1.22 12.2 | 1.18 11.8 | 907 11.4 | 860 10.8 | ≥1114 ≥14 | 287 36 | 263 33 | ≤100 | 9 | N38M | 1.26 12.6 | 1.22 12.2 | 907 11.4 | 860 10.8 | ≥1114 ≥14 | 303 38 | 287 36 | ≤100 | 10 | N40M | 1.29 12.9 | 1.26 12.6 | 907 11.4 | 860 10.8 | ≥1114 ≥14 | 318 40 | 303 38 | ≤100 | 11 | N42M | 1.33 13.3 | 1.29 12.9 | 907 11.4 | 860 10.8 | ≥1114 ≥14 | 342 43 | 318 40 | ≤100 | 12 | N45M | 1.37 13.7 | 1.33 13.3 | 907 11.4 | 860 10.8 | ≥1114 ≥14 | 366 46 | 342 43 | ≤100 | 13 | N48M | 1.41 14.1 | 1.37 13.7 | 907 11.4 | 860 10.8 | ≥1114 ≥14 | 390 49 | 366 46 | ≤100 | 14 | N33H | 1.18 11.8 | 1.14 11.4 | 876 11.0 | 820 10.3 | ≥1353 ≥17 | 263 33 | 247 31 | ≤120 | 15 | N35H | 1.22 12.2 | 1.18 11.8 | 907 11.4 | 876 11.0 | ≥1353 ≥17 | 287 36 | 263 33 | ≤120 | 16 | N38H | 1.26 12.6 | 1.22 12.2 | 940 11.8 | 890 11.2 | ≥1353 ≥17 | 303 38 | 287 36 | ≤120 | 17 | N40H | 1.29 12.9 | 1.26 12.6 | 995 12.5 | 916 11.5 | ≥1353 ≥17 | 318 40 | 303 38 | ≤120 | 18 | N42H | 1.33 13.3 | 1.29 12.9 | 995 12.5 | 939 11.8 | ≥1353 ≥17 | 342 43 | 318 40 | ≤120 | 19 | N44H | 1.35 13.5 | 1.33 13.3 | 1035 13.0 | 956 12.0 | ≥1353 ≥17 | 358 45 | 342 43 | ≤120 | 20 | N46H | 1.38 13.8 | 1.35 13.5 | 1035 13.0 | 956 12.0 | ≥1353 ≥17 | 374 47 | 358 45 | ≤120 | 21 | N33SH | 1.18 11.8 | 1.14 11.4 | 876 11.0 | 820 10.3 | ≥1592 ≥20 | 263 33 | 247 31 | ≤150 | 22 | N35SH | 1.22 12.2 | 1.18 11.8 | 907 11.4 | 860 10.8 | ≥1592 ≥20 | 287 36 | 263 33 | ≤150 | 23 | N38SH | 1.26 12.6 | 1.22 12.2 | 907 11.4 | 860 10.8 | ≥1592 ≥20 | 303 38 | 287 36 | ≤150 | 24 | N40SH | 1.29 12.9 | 1.26 12.6 | 907 11.4 | 860 10.8 | ≥1592 ≥20 | 318 40 | 303 38 | ≤150 | 25 | N42SH | 1.33 13.3 | 1.29 12.9 | 907 11.4 | 860 10.8 | ≥1592 ≥20 | 342 43 | 318 40 | ≤150 | 26 | N44SH | 1.35 13.5 | 1.33 13.3 | 907 11.4 | 860 10.8 | ≥1592 ≥20 | 358 45 | 342 43 | ≤150 | 27 | N30UH | 1.14 11.4 | 1.08 10.8 | 844 10.6 | 804 10.1 | ≥1989 ≥25 | 247 31 | 223 28 | ≤180 | 37 | N33UH | 1.18 11.8 | 1.14 11.4 | 876 11.0 | 820 10.3 | ≥1989 ≥25 | 263 33 | 247 30 | ≤180 | 38 | N35UH | 1.22 12.2 | 1.18 11.8 | 907 11.4 | 860 10.8 | ≥1989 ≥25 | 287 36 | 263 33 | ≤180 | 39 | N38UH | 1.26 12.6 | 1.22 12.2 | 907 11.4 | 860 10.8 | ≥1989 ≥25 | 303 38 | 287 36 | ≤180 | 40 | N30EH | 1.14 11.4 | 1.08 10.8 | 844 10.6 | 804 10.1 | ≥2387 ≥30 | 247 31 | 223 28 | ≤200 | 41 | N33EH | 1.18 11.8 | 1.14 11.4 | 876 11.0 | 820 10.3 | ≥2388 ≥30 | 263 33 | 247 31 | ≤200 | 42 | N35EH | 1.22 12.2 | 1.18 11.8 | 907 11.4 | 836 10.5 | ≥2388 ≥30 | 287 36 | 263 33 | ≤200 |
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