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Neodymium Iron Boron Large Countersunk Ring Magnet N42H OD120mm

/Neodymium Iron Boron Large Countersunk Ring Magnet N42H OD120mm

Neodymium Iron Boron Large Countersunk Ring Magnet N42H OD120mm, Anisotropic Circular Powerful NdFeB Multi-pole Ring Permanent Magnets for Speaker, Multimedia, Sound Device, Regular Neodymium Ring Large Motor Magnets, Sintered REE Permanent Magnet, Industrial Magnet China Supplier

Neodymium Iron Boron Large Countersunk Ring Magnet N42H OD120mm Feature:

Magnet Material: NdFeB or Neodymium Iron Boron
Magnet shape: Ring
Magnet grade: 42H
Outer diameter: 120mm
Inner diameter: 75mm
Thickness: 5.0mm
Tolerance: +/-0.1mm (0.004”)
Coating: Nickle plated
Operating Temp(Max).: 120℃
Direction of magnetization: Magnetized through thickness

Countersunk Ring Magnet With Hole 42H OD120xID75x5.0mm
Material type: Permanent
Material composition: Nd2Fe14B
Remanence (Br): 12.8– 13.4KGs
Coercive force(Hcb): 11.8KOe
Intrinsic Coercive Force( Hci ) : 16.5KOe
Max Energy (BH)max: 40 – 43MGOe
Max working temp. : 120℃
Curie Point (Max). : 248℉
Density : 7.4~7.6g/cm3

Neodymium Ring Magnet are great for loudspeaker, home theater, multimedia, headset, water meter, vibration motor, etc.
Sintered NdFeB Magnet Ring are supplied in different grades and sizes, maximum diameter 220mm, minimum thickness 1.0mm. Ring magnet, which are magnetized through thickness (axially), north pole and south pole are located on the top and bottom. Axially magnetized is common magnetism for ring magnets. Diameterically magnetized also can be made as per customer’s different requirement.

Sintered NdFeB magnets are produced by sintering from the mixture of rare earth materials neodymium-iron-boron. They have the highest energy among current permanent magnets and can be supplied in many shapes and sizes.
APPLICATION: Automotive industry: for starters, distributors, ignition, etc. Consumer electronics: loudspeaker parts, linear motors, etc. Super Strong Magnet Neodymium Iron Boron Large Ring For Sound Device

Other size and grade are available on request

Disc Magnet Magnetized through thickness
Axially Magnetized
Diametrically Magnetized
Multi-poles Diametrically

NdFeB neodymium magnets are a mixture of neodymium, iron and boron. Neodymium magnets offer the best combination of properties and cost. This material is currently the newest and most powerful type of magnet with excellent magnetic properties and the highest internal energy, such as remanence and energy density. Magnets of this type are capable of carrying more than a thousand times their own weight and a coin-sized magnet can sustain an iron object weighing ca. 10 kg.

The NdFeB magnets with high intrinsic coercivity have been produced by using the conventional powder metallurgy method (including SC, HD and JM) of sintered NdFeB magnets. The effects of grain boundary phases on the microstructure and magnetic properties of as-sintered and annealed magnets have been tried to investigate. Also the Curie temperature of the magnets was studied. By adopting suitable component ratio of some heavy rare-earth atoms and some micro-quantity additives, we have prepared high-coercivity sintered NdFeB magnets with magnetic properties of jHc=36.3kOe, Br=11.7kGs and (BH)max=34.0MGOe. The temperature coefficient of residual magnetic flux of the magnets (between 20 and 200°C) is -0.113%/°C, while the temperature coefficient of intrinsic coercivity -0.355%/°C. The Curie temperature of the magnets is about 342°C.

HSMAG Magnetics neodymium magnets in RING shapes for customers’ immediate needs and accept special orders for custom neodymium magnets.

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