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Nd-Fe-B MAGNET

Round Type | Ring Type | Ring Type (Disk Type) | Bar Type (Square Type) | Bar Type (Round Type)
 | Square Type | Diametrically Magnetized Type | Flat Round Type

neodymium magnet Nd-Fe-B Standard Products

Rare earth magnets can be classified into a samarium-cobalt magnet and a neodymium magnet. A characteristic of a samarium-cobalt magnet is strong magnetic force. Its merit is that it is resistant to rust and high temperature, but it tends to be easily broken. It is popular as the most suitable material for a small and lightweight magnet, like neodymium. A neodymium magnet can produce the strongest magnetic field in the world among those sold in the current market. The shape of a neodymium magnet can be round, square or ring according to what it is used for. Although it is mechanically strong, its surface is processed since it is easily rusted and therefore it must be used below 80°C. 

Round Type

Neodymium Nd-Fe-B magnet Standard Products Round Type

OD X H Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
1)1.2 Ø X 2 1.3 130 0.04
1.5 Ø X 1.5 2.8 280 0.05
2 Ø X 2 2.7 270 0.07
2 Ø X 3 3.2 320 0.08
3 Ø X 1.5 3.1 310 0.17
2)3 Ø X 1.8 3.2 320 0.25
3 Ø X 2 3.5 350 0.3
3 Ø X 2.5 3.3 330 0.3
3 Ø X 3 3.4 340 0.35
3 Ø X 4 3.5 350 0.38
4 Ø X 1.5 2.7 270 0.25
4 Ø X 2 3.0 300 0.3
4 Ø X 3 3.5 350 0.4
4 Ø X 4 3.9 390 0.5
4 Ø X 5 4.2 420 0.55
5 Ø X 1 1.5 150 0.2
2)5 Ø X 1.5 2.0 200 0.3
2)5 Ø X 2 3.2 320 0.35
5 Ø X 3 3.5 350 0.44
5 Ø X 4 3.8 380 0.56
5 Ø X 5 4.0 400 0.65
55 Ø X 1.7 2.1 210 0.3
6 Ø X 2 2.2 220 0.4
6 Ø X 3 2.9 290 0.6
6 Ø X 5 3.5 350 0.75
7 Ø X 2 3.0 300 0.7
7 Ø X 3 3.5 350 0.77
8 Ø X 1 1.8 180 0.5
8 Ø X 2 2.2 220 0.65
8 Ø X 3 3.5 350 1.1
8 Ø X 4 3.6 360 1.25
8 Ø X 5 4.0 400 1.4
8 Ø X 8 4.2 420 1.8
9 Ø X 3 3.2 320 1.2
9.4 Ø X 0.8 1.5 150 0.4
10 Ø X 2 2.6 250 1.3
OD X H Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
10 Ø X 3 3.5 350 2.0
10 Ø X 4 3.8 380 2.4
10 Ø X 5 4.2 420 2.6
10 Ø X 10 4.8 480 3.65
12 Ø X 1.3 2.0 200 1.45
12.5 Ø X 1.5 2.0 200 1.8
12.5 Ø X 2 2.0 200 1.9
13 Ø X 10 4.8 480 6.1
13 Ø X 20 5.5 550 9.5
14 Ø X 10 4.5 450 6.4
15 Ø X 1.5 1.8 180 1.1
15 Ø X 1.7 2.0 200 1.3
2)15 Ø X 3 3.2 320 3.7
15 Ø X 4 3.3 330 4.0
15 Ø X 5 3.3 330 4.5
15 Ø X 10 4.2 420 6.8
16 Ø X 10 4.2 420 7.2
17.9 Ø X 2.5 2.7 270 2.5
19 Ø X 10 4.0 400 9.8
20 Ø X 5 2.8 280 6.3
21 Ø X 4.6 3.2 320 7.0
22 Ø X 10 4.5 450 15.3
23.5 Ø X 3.4 2.0 200 4.0
23.5 Ø X 4.5 2.2 220 4.8
23.5 Ø X 5 2.4 240 5.6
24 Ø X 20 5.0 500 40.0
25 Ø X 3.4 1.8 180 4.2
25 Ø X 5 2.5 250 7.5
25 Ø X 6 3.0 300 8.0
25 Ø X 9.8 3.5 350 14.0
30 Ø X 15 5.0 500 22.0
32 Ø X 10.5 4.0 400 26.0
40 Ø X 10 3.8 380 35.0
50 Ø X 20 5.1 510 180.6
100 Ø X 15 3.7 370 75.0
1) Gold plated, 2) Gold or Ni plated
•Surface magnetic flux density and the magnetic absorption are values for reference.
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Ring Type

Neodymium Nd-Fe-B magnet Standard Products Ring Type

OD X ID X H Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
5 Ø X 2.4 Ø X 3 2.2 220 0.3
6 Ø X 3 Ø X 4 3.3 330 0.4
6.6 Ø X 2 Ø X 1.5 2.0 200 0.28
8 Ø X 2 Ø X 2.5 3.0 300 0.9
8 Ø X 4 Ø X 5 3.7 370 1.2
8.5 Ø X 5.5 Ø X 0.8 1.0 100 0.2
10 Ø X 5 Ø X 5 3.6 360 1.8
10 Ø X 6 Ø X 1 1.7 170 0.7
10 Ø X 6 Ø X 10 3.3 330 2.5
10.5 Ø X 7.6 Ø X 1 1.6 160 0.7
11 Ø X 4 Ø X 10 3.2 320 3.2
12 Ø X 6 Ø X 0.8 1.6 160 0.7
12 Ø X 7 Ø X 6 3.6 360 2.2
13.5 Ø X 5 ØX 2 2.2 220 1.0
14 Ø X 9 ØX 4 3.0 300 3.0
14.2 Ø X 10 ØX 2 3.0 300 2.1
17 ØX 8.8 Ø X 1.25 1.8 180 1.0
•Surface magnetic flux density and the magnetic absorption are values for reference.
OD X ID X H Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
18 Ø X 7 Ø X 6 3.6 360 5.5
19 Ø X 6.5 Ø X 10 4.5 450 8.4
23 Ø X 8 Ø X 3.5 3.0 300 3.5
23 Ø X 8 Ø X 14 4.2 420 12.0
23 Ø X 13 Ø X 1 1.3 130 1.8
25 Ø X 7 Ø X 6 3.6 360 7.3
26 Ø X 20 Ø X 6 3.5 350 5.5
31.2 Ø X 18.2 Ø X 1 1.2 120 3.2
39 Ø X 19 Ø X 7 3.5 350 20.0
59 Ø X 19 Ø X 10 4.5 450 45.0
70 Ø X 32 Ø X 15 4.5 450 50.0
76 Ø X 42 Ø X 6 3.5 350 55.0
98 Ø X 58 Ø X 10 4.0 400 65.0
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Ring Type (Disk Type)

Neodymium Nd-Fe-B magnet Standard Products Ring Type (Disk Type)

OD X ID X H Poles
26Ø X 20Ø X 4.7 4 poles
48Ø X 25Ø X 3.5 4 poles
60Ø X 30Ø X 8 8 poles
Multipole pattern viewed with magnetic viewer
Multipole pattern viewed with magnetic viewer
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Bar Type (Square Type)

Neodymium Nd-Fe-B magnet Standard Products Bar Type (Square Type)

W X H X L Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
0.6 X 2 X 7 3.0 300 0.01
4 X 4 X 12 4.5 450 0.6
• Surface magnetic flux density and the magnetic absorption are values for reference.
W X H X L Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
4 X 7.5 X 12 4.4 440 1.0
5 X 5 X 10 4.0 400 0.9
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Bar Type (Round Type)

Neodymium Nd-Fe-B magnet Standard Products Bar Type (Round Type)

OD X L Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
1 Ø X 5 1.5 150 0.05
1.4 Ø X 5 1.5 150 0.08
1.5 Ø X 8 2.0 200 0.09
2 Ø X 5.5 3.5 350 0.12
2 Ø X 7 3.8 380 0.2
2.3 Ø X 4.5 3.3 330 0.15
2.5 Ø X 6 3.6 360 0.23
3 Ø X 5 3.4 340 0.4
3 Ø X 6 3.6 360 0.42
3 Ø X 10 4.0 400 0.5
4 Ø X 8 4.0 400 0.7
5 Ø X 8 3.7 370 0.8
•Surface magnetic flux density and the magnetic absorption is a value for reference.
OD X L Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
5 Ø X 10 4.0 400 0.9
5.5 Ø X 8 3.9 390 1.0
6 Ø X 10 4.0 400 1.1
6 Ø X 23 5.0 500 2.5
9 Ø X 10 4.2 420 2.2
16 Ø X 30 5.0 500 15.0
17.5 Ø X 20 4.7 470 17.0
19 Ø X 40 5.2 520 19.0
22.5 Ø X 25 5.0 500 24.0
23.5 Ø X 25 5.0 500 27.0
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Square Type

Neodymium Nd-Fe-B magnet Standard Products Square Type

L X W X H Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
2.4 X 2.4 X 1.8 2.0 200 0.04
4 X 4 X 2 2.0 200 0.3
6 X 6 X 4.5 3.2 320 0.85
6.8 X 4 X 2 2.8 280 0.45
8 X 5 X 1.8 2.5 250 0.55
9 X 5 X 1.5 2.3 230 0.7
9 X 7 X 3 3.1 310 1.1
10 X 3 X 3 3.3 330 0.65
10 X 5 X 1 1.4 140 0.35
10 X 10 X 2 2.0 200 1.5
10 X 10 X 4 3.1 310 2.2
10 X 10 X 6 4.2 420 3.7
10 X 10 X 8 3.6 360 2.8
10 X 10 X 10 4.2 420 3.6
12 X 7 X 4 3.5 350 1.8
12 X 10 X 4 3.3 330 2.9
15 X 5 X 3 3.2 320 1.5
15 X 6 X 2.8 3.0 300 1.6
15 X 10 X 5 3.5 350 3.3
16 X 3.25X 4.1 4.3 430 2.3
18 X 3.25 X 2.7 3.0 300 0.8
18 X 3.25 X 4.1 3.5 350 1.0
1)20 X 4.15 X 2.15 2.6 260 1.9
20 X 10 X 4 2.8 280 4.8
20 X 10 X 5 4.0 400 6.0
20 X 10 X 10 3.2 320 7.1
20 X 12 X 5 3.0 300 6.0
20 X 15 X 5 3.0 300 6.3
20 X 18 X 7.5 4.4 440 11.0
22 X 21 X 5 2.9 290 7.2
23 X 23 X 10 3.3 330 8.5
L X W X H Surface
magnetic
flux density		 magnetic
absorption
kG mT kgf
24 X 24 X 12.5 4.2 420 23.0
25.4 X 9.6 X 9.6 4.0 400 12.0
25.4 X 25.4 X 12.7 4.0 400 23.5
26 X 20 X 6 3.3 330 9.5
28 X 13 X 4 3.3 330 6.7
28.5 X 16 X 5(3φ) 3.1 310 7.6
29.5 X 4.15 X 2.15 2.5 250 2.2
30 X 10 X 8 4.2 420 10.0
30 X 30 X 5 3.0 300 12.0
30 X 30 X 10 4.0 400 23.0
2)30 X 30 X 10 4.0 400 23.0
40 X 11 X 6 3.5 350 8.4
40 X 15 X 5 3.0 300 9.0
40 X 40 X 10 4.0 400 38.0
46 X 30 X 10 4.0 400 35.0
50 X 10 X 2 2.0 200 4.5
50.8 X 50.8 X 12.7 4.0 400 65.0
3)50.8 X 50.8 X 12.7 4.0 400 65.0
50.8 X 50.8 X 25.4 4.8 480 80.0
51 X 4.15 X 2.15 2.2 220 3.5
58 X 14 X 3 2.4 240 5.5
60 X 30 X 10 3.8 380 45.0
68 X 4 X 8 3.2 320 7.5
79.5 X 4.5 X 1.5 1.8 180 4.5
1) Aluminum Cromate coated, 2) M3 Counter sunk, 3) M5 Counter sunk
•Surface magnetic flux density and the magnetic absorption is a value for reference.
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Diametrically Magnetized Type

Neodymium Nd-Fe-B magnet Standard Products Diametrically Magnetized Type

OD X H [ID] Surface magnetic flux density
kG mT
8 Ø X 1 2.7 270
2.2 Ø X 5.8 3.5 350
3.4 Ø X 7.6 (1.1 Ø) 3.5 350
4 Ø X 10 4.1 410
13 Ø X 20 5.0 500
•Surface magnetic flux density is a value for reference.
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Flat Round Type

Neodymium Nd-Fe-B magnet Standard ProductsFlat Round Type

Size Surface magnetic
flux density
kG mT
0.5 X 0.5 X 0.5 1.0 100
1 Ø X 0.5 1.5 150
1.46 Ø X 0.98 2.4 240
2 Ø X 0.5 1.5 150
1)3 Ø X 0.8 2.1 210
•Surface magnetic flux density is a value for reference.
  • Surface magnetic flux density is a value for reference.
  • Surface magnetic flux density is a value for reference.
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