20x4mm N42 Nickel Disc Neodymium Magnets

20x4mm N42 Nickel Disc Neodymium Magnets

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Description:

Super Neodymium Magnet Made of neodymium, the most powerful magnet material in the world. Super magnets are great for projects that require extreme strength in a small size. Magnets are brittle and can chip if dropped. Warning: Not for children.

Specification:

 China Manufacturer 20x4mm N42 Nickel Disc Neodymium Large Super High Grade Rare Earth Permanent Ndfeb Magnet  .

ndfeb magnet (20)Jintong-25x2mm disc magnet-04

Place of origin China
Item ID S2004N
Material NdFeB
Shape Disc
Diameter 20mm
Thickness 4mm
Tolerance ±0.03mm for diamater   /thickness, ±0.1mm for width/ length
Direction of magnetisation axial (parallel to height)
Coating Nickel-plated (Ni-Cu-Ni),can be Customised  Gold, Silver, Copper, Epoxy, Chrome, etc)
Grade Customized  N35 N38 N40 N42 N45 N48 N50 N52 ……
Max. Working Temperature Grade Max. Operating Temperatures
N35-N52 80°C (176°F)
33M- 48M 100°C (212°F)
33H-48H 120°C (248°F)
30SH-45SH 150°C (302°F)
30UH-40UH 180°C (356°F)
28EH-38EH 200°C (392°F)
28AH-35AH 220°C (428°F

All size and shape (disc/ring/square/cylinder/block/arc ect) can be customized as your requirement.

Product show:

Disc magnet6

ndfeb magnet (12)

ndfeb magnet (20)

Coating for your convenience:

Neodymiun magnet are compsed mainly of neodymiun, iron and boron.if thet ar not plated, the iron in the material will oxidize very easily, particularly id exposed to moisture. Even normal humidity will rust any iron anywhere over time.

Nickel is the most common choice, as it is durable and cost-eddective.Our magnets are costed with a triple plating of nickle-copper-nickle.This created a shiny siliver finish and provides dependable resistance to corrosion in most applications. It is important to remember that no neodymium magnet,even with a plastic or golb coating, is completely waterproof.

More method of coating as below:

coating11 (1) (1)

Magnet Application:

Motors,Wind Power,Sensors,Computers and Peripherals,Magnetic Assemblies,Automotive.

Motion Control,Aerospace,Research and Development,Communications,Medical Device and Diagnostics,Home appliance,Other magnetic applications or you can find new application according to your design.

 

Production Flow:

For the next 25 years Jintong was one of the leading neodymium magnet  manufacturers and shipped an average of 1 to 2 tons of finished neodymium magnetic material per month. We are constantly striving to add complimentary functions in order to consistently deliver value to the market place.

production flow (1)

Machining Equipment:

Configure high-end detection equipment The development of proprietary cutting technology, advanced precision machinetight production process control allowed Jintong to remain at the forefront of neodymium magnet manufacturers.

1.Average force meter( Milling particle size inspection)

2.Magnetization characteristic automatic measuring instrument( Issuedemagnetization curve)

3.Magnetic testing equipment for measurements of Field Density and Field Strength

4.Hysteresisgraph for magnetic characteristic measuremen ect

machining (1)

Certification:

certificate

Products Features:

Durable – These neodymium magnets ( NdFeB ) are Ni+Cu+Ni triple layer coated, which offer a rust resist protection and shining surface to the magnets


Permanent – Strong Holding Power and resistance to magnetisation. The magnet power basically last forever


Multi-function – it is good for DIY Art, hand crafting and storage idea. It can be widely use in garage, home, office wall, misti or scientific experienments


Easy to use – No tools required. Quick and easy to assemble. Put them on any magnetic surface. No drill. No holes. No mess.


User Tips – Be careful when seperating them apart and putting them together, the magnet would be fragile when they crash each others

How to place an order:

1.About Size: what is the length, width and thickness of the magnets?

2.About coating: the most common coating is NiCuNi and Zinc, of course other coating is acceptable.

3.Grade of magnet: Please check the most suitable grade of magnet you want.

4.About Magnetized direction: Through Thickness? Through Length? Through Width?

5.Please also let us know the quantity you need.


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