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Round neodymium magnet【3-10 Pieces Per Package】 (NE681)

Round neodymium magnet NE681

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NIROKU

NIROKU

A rare-earth magnet with the highest magnetic energy among the existing magnets.
[Features]
· Circular type magnet
· Not much cracking or chipping and high mechanical strength magnet
· It is cheaper than a samarium magnet, which is the same rare earth magnet.
· Due to its low temperature characteristics, the usage conditions for standard products allow use below 80°C.
· If it is a heat resistant type with improved coercivity, it can be used in high temperature ranges up to about 220°C.
· All products are surface-treated with nickel plating, etc., to be rust-resistant.
[Applications]
· Can be widely used for motors, iron powder removal, sensors, medical equipment, etc.
· Ideal for prototyping in small lots, etc.

(i)Caution

  • The product images are representative only. Specifications may vary by part number, including shape and color.
  • Due to export restrictions on rare earths in China, orders will be suspended once current stock runs out. Please note that even for large quantity quotations, delivery times may remain undetermined.

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Japanese Only

Part Number

Configured Part Number is shown.

NE681

Product Specification

Magnetic Properties

Material NameResidual magnetic flux densityCoercive ForceCoercive ForceMaximum energy product
BrbHciHc(BH) max.
TkA/mkA/mkJ/m3
N-301.08 to 1.15≥ 796≥ 955223 to 247
N-331.13 to 1.17≥ 836≥ 955247 to 271
N-351.17 to 1.25≥ 859≥ 955263 to 295
N-381.22 to 1.30≥ 859≥ 955287 to 318
N-401.25 to 1.32≥ 859≥ 955302–334
N-421.28 to 1.35≥ 859≥ 955318 to 350
N-451.32 to 1.38≥ 836≥ 955334–366
N-481.36 to 1.43≥ 836≥ 875358 to 390
N-501.39 to 1.46≥ 796≥ 875374 to 408
N-521.42 to 1.48≥ 796≥ 875390 to 424
N-551.45 to 1.52≥ 716≥ 875406 to 446
N-35M1.17 to 1.25≥ 868≥ 1114263 to 295
N-38M1.22 to 1.30≥ 899≥ 1114287 to 318
N-40M1.25 to 1.32≥ 907≥ 1114302–334
N-42M1.28 to 1.35≥ 907≥ 1114318 to 350
N-45M1.32 to 1.38≥ 907≥ 1114334–366
N-48M1.36 to 1.43≥ 907≥ 1114358 to 390
N-50M1.39 to 1.46≥ 907≥ 1114374 to 408
N-30H1.08 to 1.17≥ 796≥ 1353223 to 255
N-33H1.13 to 1.22≥ 820≥ 1353247 to 279
N-35H1.17 to 1.25≥ 860≥ 1353263 to 295
N-38H1.22 to 1.30≥ 876≥ 1353286 to 318
N-40H1.25 to 1.32≥ 907≥ 1353302–334
N-42H1.28 to 1.35≥ 907≥ 1353318 to 350
N-45H1.30 to 1.39≥ 907≥ 1274326 to 374
N-48H1.36 to 1.43≥ 907≥ 1274358 to 392
N-30SH1.08 to 1.17≥ 796≥ 1592223 to 255
N-33SH1.13 to 1.22≥ 820≥ 1592247 to 279
N-35SH1.17 to 1.25≥ 860≥ 1592263 to 295
N-38SH1.22 to 1.30≥ 876≥ 1592286 to 318
N-40SH1.23–1.32≥ 907≥ 1592287 to 334
N-42SH1.28 to 1.35≥ 907≥ 1592310 to 350
N-45SH1.32 to 1.38≥ 907≥ 1592334–366
N-48SH1.36 to 1.43≥ 907≥ 1512358 to 390
N-30UH1.08 to 1.17≥ 796≥ 1990223 to 255
N-33UH1.13 to 1.22≥ 820≥ 1990247 to 279
N-35UH1.17 to 1.25≥ 860≥ 1990263 to 295
N-38UH1.22 to 1.30≥ 876≥ 1990287 to 318
N-40UH1.25 to 1.32≥ 876≥ 1990302–334
N-42UH1.27 to 1.35≥ 907≥ 1990310 to 366
N-45UH1.32 to 1.38≥ 907≥ 1910334–366
N-30EH1.08 to 1.17≥ 796≥ 2387223 to 255
N-33EH1.14 to 1.22≥ 816≥ 2387247 to 279
N-35EH1.17 to 1.25≥ 860≥ 2387263 to 295
N-38EH1.22 to 1.30≥ 876≥ 2228286 to 318
N-30AH1.08 to 1.15≥ 780≥ 2624223 to 255
N-33AH1.13 to 1.18≥ 780≥ 2624247 to 271

Physical Properties

Series NameTemperature coefficient (Br)DensityCurie TemperatureVickers HardnessOperating temperature*
%/°Cg/cm3℃HV℃
N series-0.127.3 to 7.5310500-60080
N-M series-0.117.3 to 7.5310500-600100
N-H series-0.117.3 to 7.5310500-600120
N-SH series-0.17.3 to 7.5310500-600150
N-UH series-0.17.3 to 7.5310500-600180
N-EH series-0.17.3 to 7.5310500-600200
N-AH series-0.17.3 to 7.5310500-600220

*In the case where the dimensional ratio of thickness (t) / diameter (D) in a round shape is 0.7

Image of NE206

Image of NE206

NE206 ⌀10 (diameter 10 mm) × 2 mm: N39SH

  • Magnetized in thickness direction, length 260 mT, width 1.00 kg
  • Weight 1.15 g
Image of NE017 Neodymium

Image of NE017

NE017 ⌀10 (Diameter 10 mm) ×10 mm: N40

  • Y-direction magnetization Length 490 mT Width 3.40 kg
  • Weight 5.73 g
Image of NE219

Image of NE219

NE219 ⌀1.5 (Diameter 1.5 mm) ×8 mm: N35

  • Y-direction magnetization Length 220 mT Width 0.08 kg
  • Weight 0.10 g

Product Feature Details

  • Neodymium magnets are shaped and sintered products whose main components are neodymium, iron and boron.
  • The exceptional magnetic energy is the highest among the existing magnets.

Magnetization Direction: Y-direction

Magnetization Direction: Radial Magnetization

Magnetization Direction: Four Poles on Both Sides

Cautions and Prohibitions

  • There is a risk of injury, such as fingers getting pinched, if the magnet adheres to each other, tools, or iron pieces.
  • If the magnets are accidentally attracted, fix one magnet and move the other to the side. This method makes it relatively easy to remove.
    At this time, if tools are used, the magnet may be cracked or chipped.
  • Magnets are generally fragile, and neodymium magnets tend to corrode from the damaged surface.
    Also, there is a risk of injury from these fragments.
  • Keep magnets out of reach of children. If you accidentally swallow a magnet, contact your doctor immediately.
  • People with metal allergies may experience itching or redness if they come into contact with magnets.
    If you experience any of these symptoms, do not touch the magnet.
  • If the magnet comes into direct contact with water, its components may leach out. Never drink this water.
  • Bringing a magnet close to a credit card, cash card, etc., may render it unusable.
  • Bringing magnets close to precision equipment such as computers, smartphones, watches, etc., may cause malfunction.
  • Placing a magnet close to an electronic medical device such as a cardiac pacemaker may impair its normal operation.
  • Demagnetization may occur if the magnet is used outside the operating temperature range.
  • Applying a strong impact to the magnet or processing it may demagnetize it.
  • Excessive bending of rubber magnets with a thickness of 2 mm or more may cause cracks.
30
45
60
  1. 1
Part Number
NE681
Part NumberStandard Unit PriceNumber of pc(s). included in pkg.Minimum order quantityVolume DiscountDays to ShipO.D.
(Ø) 		Pull Force (Range)
(N) 		Attraction Force (Specific)
(N) 		Thickness
(mm) 		Material Details Surface Treatment Magnetization Direction Holding Force (Specify Value)
(N)

MYR 41.01

10 Pieces Per Package

1 Pack(s) 12 Day(s) or more 3Up to 10.0-0.8N-35Ni platingThickness0.98

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  1. 1
 

Basic Information

Pull Force (Value) Neodymium Magnet Shape Round Type, Without Holder

Please check the type/dimensions/specifications of the part NE681 in the Round neodymium magnet series.

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Specification/Dimensions

  • Attraction Force (Specific)(N)

    • 0.294
    • 1.47
    • 3.332
    • 5.88
    • 49
    • 78.4

    Clear

  • type

    • NE

    Clear

  • O.D.(Ø)

    • 1
    • 1.5
    • 2.2
    • 3
    • 6
    • 7
    • 8
    • 10
    • 12
    • 20
    • 25
    • 30

    Clear

  • Pull Force (Range)(N)

    • Up to 10.0
    • 10.1 to 20.0
    • 20.1 to 30.0
    • 40.1 to 50.0
    • 50.1 to 60.0
    • 60.1 to 70.0
    • 80.1 to 90.0
    • 100.1～

    Clear

  • Thickness(mm)

    • 0.5
    • 0.8
    • 1
    • 1.7
    • 2
    • 2.5
    • 3
    • 4
    • 5
    • 5.8
    • 8
    • 9
    • 10

    Clear

  • Material Details

    • N-55
    • N-52
    • N-45
    • N-45M
    • N-40
    • N-35
    • N-35EH
    • N-35H
    • N-35SH

    Clear

  • Surface Treatment

    • Ni-plated + N pole green mark
    • Ni-plated · N purple mark
    • Ni Plating / Black N Mark
    • Ni Plating / Red N Mark
    • Ni plating
    • Ni plating + N red mark

    Clear

  • Magnetization Direction

    • Diameter
    • Thickness

    Clear

  • Holding Force (Specify Value)(N)

    • 0.392
    • 0.49
    • 0.588
    • 0.98
    • 1.176
    • 1.47
    • 1.666
    • 2.156
    • 4.508
    • 5.096
    • 6.86
    • 8.428
    • 11.662
    • 25.284
    • 44.198
    • 56.742
    • 57.526
    • 65.17
    • 86.338
    • 123.48

    Clear

Days to Ship

    • All
    • 12 Day(s) or Less
    • 13 Day(s) or Less

    Clear

Specify Alterations

Products like this...

Part Number
NE278
NE490
NE499
NE683
NE692
NE693
Part NumberStandard Unit PriceNumber of pc(s). included in pkg.Minimum order quantityVolume DiscountDays to ShipO.D.
(Ø) 		Pull Force (Range)
(N) 		Attraction Force (Specific)
(N) 		Thickness
(mm) 		Material Details Surface Treatment Magnetization Direction Holding Force (Specify Value)
(N)

MYR 15.61

3 Pieces Per Package

1 Pack(s) 12 Day(s) or more 1Up to 10.00.2942N-52Ni Plating / Red N MarkThickness0.49

MYR 419.74

10 Pieces Per Package

1 Pack(s) 13 Day(s) or more 2550.1 to 60.0494N-40Ni Plating / Red N MarkThickness57.526

MYR 692.58

10 Pieces Per Package

1 Pack(s) 12 Day(s) or more 3080.1 to 90.078.45N-40Ni Plating / Red N MarkThickness86.338

MYR 37.76

10 Pieces Per Package

1 Pack(s) 12 Day(s) or more 1.5Up to 10.0-3N-35Ni platingThickness0.98

MYR 66.88

10 Pieces Per Package

1 Pack(s) 12 Day(s) or more 6Up to 10.0-1.7N-35Ni platingDiameter1.47

MYR 93.36

10 Pieces Per Package

1 Pack(s) 12 Day(s) or more 1010.1 to 20.0-2.5N-35Ni platingThickness11.662

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