Custom Made Magnet Neo Circular Ring N38UH OD 83mm Feature:
Magnet Material: NdFeB or Neodymium Iron Boron
Magnet shape: Ring
Magnet grade: N42SH
Outer diameter: 83mm
Inner diameter: 71mm
Thickness: 5.0mm
Tolerance: +/-0.1mm (0.004”)
Coating: NiCuNi Plated
Operating Temp(Max).: 180℃
Direction of magnetization: Magnetized through thickness
Material type: Permanent
Material composition: Nd2Fe14B
Remanence (Br): 12.1– 12.7KGs
Coercive force(Hcb): 11.1KOe
Intrinsic Coercive Force( Hci ) : 24KOe
Max Energy (BH)max: 36 – 39MGOe
Max working temp. : 180℃
Curie Point (Max). : 356℉
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. High Performance Strong Rare Earth Ring Magnet N42SH Diameter 60mm
Neodymium magnets are sensitive to temperature change and even lose magnet properties at high temperature
Neodymium magnets lose -0.09 ~ -0.13% of Br/oC and can work stably under 80oC for low Hci Neodymium magnets and 150oC for high Hci Neodymium magnets.
Neodymium magnets are corrupted in humid environment
Surface protection is strongly recommended, such as plating, varnishing and encapsulating.
Neodymium magnets are hard and brittle
Neodymium magnets can be abrasively machined with coolant served to absorb heating and dust. Without coolant, rare earth magnets could crack and chip by the heat produced during high speed cutting or grinding, and the sparks contain the easily oxidized grinding dust that could cause fire! Custom Multi-poles Axially Neodymium Ring Magnet N33UH
Tolerance of Neodymium magnets
Unless otherwise specified, tolerance on dimension of magnetization is +0.005″. Other dimensions are +1.5% or +.010″, whichever is greater. Neodymium Iron Boron Large Countersunk Ring Magnet N42H OD120mm
NdFeb magnets can be used for a wide variety of applications, for example:
NeodymiumElectronics – Sensors, hard disk drives, sophisticated switches, electro-mechanical devices etc.
Auto Industry – DC motors (hybrid and electric), small high-performance motors, power steering.
Medical – MRI equipment and scanners.
Clean Tech Energy – Water flow enhancement, wind turbines.
Magnetic Separators – Used for recycling, food and liquids QC, waste removal.
Magnetic Bearing – Used for highly sensitive and delicate procedures in various heavy industries.
HSMAG Magnetics neodymium magnets in RING shapes for customers’ immediate needs and accept special orders for custom neodymium magnets.
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