Sintered Neodymium Magnets

Sintered Neodymium Magnets, Sintered neodymium-iron-boron (Nd-Fe-B) magnets, Rare Earth NdFeB Magnets, Neodymium Permanent Magnets

HangSeng Magnetech uses only licensed neodymium and licensed magnet materials for all applications.

Sintered neodymium-iron-boron (Nd-Fe-B) magnets are licensed rare earth magnets which are the most powerful commercialized permanent magnets available today, with maximum energy product ranging from 26 MGOe to 52 MGOe. Neodymium Iron Boron is the third generation of permanent magnet developed in the 1980s. It has a combination of very high remanence and coercivity and comes with a wide range of grades, sizes and shapes. With its excellent magnetic characteristics Nd-Fe-B offers  flexibility for new designs or as a replacement for traditional magnet materials such as ceramic, Alnico and Sm-Co for achieving higher efficiency and more compact devices.

Sintered Neodymium Magnets

Sintered Neodymium Magnets

A powder metallurgy process is used in producing sintered Neodymium magnets. Although sintered Neodymium is mechanically stronger than Samarium Cobalt magnets and less brittle than other magnets, it should not be used as a structural component. Selection of Nd-Fe-B is limited by temperature due to its irreversible loss and moderately high reversible temperature coefficient of Br and Hci. The maximum application temperature is 200 °C for high coercivity grades. Nd-Fe-B magnets are more prone to oxidation than any other magnet alloys. If Nd-Fe-B magnet is to be exposed to humidity, chemically aggressive media such as acids, alkaline solutions salts and harmful gases, coating is recommended. It is not recommended in a hydrogen atmosphere.

Applications of Neodymium Magnets

  • Magnetic separators
  • Linear actuators
  • Microphone assemblies
  • Servo motors
  • DC motors (automotive starters)
  • Computer rigid disc drives, printers and speakers

Attributes of Neodymium Material

  • Very high resistance to demagnetization
  • High energy for size
  • Good in ambient temperature
  • Moderately priced
  • Material is corrosive and should be coated for long term maximum energy output
  • Low working temperature for heat applications, but higher levels of heat resistance materials are being introduced periodically

Tolerances

For as-pressed material, tolerance on the thickness (direction of magnetization) is +/– .005”. Other dimensions are +/– 2.5% or +/– .005”, whichever is greater.

According to International Magnetics Association/Magnet Materials Producers Association (IMA/MMPA) standards, visual imperfections such as hairline cracks, porosity and minor chips are commonly found in sintered magnets. A chipped edge is considered acceptable if no more than 10% of the surface is missing. Cracks are acceptable as long as they do not extend across more than 50% of the pole’s surface.

Machining

Since neodymium magnet material is prone to chipping and cracking, it does not lend itself to conventional machining methods. However, neodymium can be abrasively ground, but only with the use of liberal amounts of coolant. The coolant minimizes heat fracturing and the risk of fires caused by oxidized grinding dust.

Magnetizing and Handling

Neodymium magnets are very brittle and very strong magnetically. Therefore, it is crucial to handle these magnets with extreme care to avoid personal injury and damage to the magnets. Fingers can be severely pinched between attracting magnets. Magnets can chip if allowed to “jump at” an attracting object. It is highly recommended that when constructing rare earth magnetic assemblies, they be magnetized after assembly.

High Grades Generator Wind Turbine NdFeB Magnets

High Grades Generator Wind Turbine NdFeB Magnets

High Grades Generator Wind Turbine NdFeB Magnets N42H, Neodymium Block Magnet, NdFeB Block 60x40x20 mm Strong Neodymium Permanent Magnets 2.36″ Rare Earth Generator Wind Turbine Magnet, HUGE VERY STRONG Neodymium block magnet N35H-N45SH wind turbine High Grades Generator Wind Turbine NdFeB Magnets Block Magnet Part No. HSWTNM-604020N42H Dimensions: 60.00 x 40.00 x 20.00mm thickness Tolerances: […]

Rare Earth Neodymium N52 Magnet for Motor

Six Arc Segments Make 2″ Ring Rare Earth Neodymium N52 Magnet for Motor

Six Arc Segments Make 2″ Ring Rare Earth Neodymium N52 Magnet for Motor, 4,000 Gauss (One) Large Neodymium N52 grade ring magnet Halbach Array , Ring Rare Earth Neodymium Permanent Magnets for Direct Drive Permanent Magnet Generators Six Arc Segments Make 2″ Ring Rare Earth Neodymium N52 Magnet Part No. HSSNM-N52-2-1 1 (One) Large Neodymium […]

Micro Magnets

Micro Magnets

We supply micro magnets in Alnico, NdFeB, SmCo, Ceramic FeCrCo with very tight tolerances as well as NdFeB micro magnets with high quality parylene cating, Ni, Ni black and gold-plated. These magnets are used many applications include industries as diverse as medical applications, medical devices, micro motors, and sensors. We can provide magnets in Neodymium […]

Sintered NdFeB Ring Radial Magnet

Sintered NdFeB Ring Radial Magnet

Sintered NdFeB Ring Radial Magnet, Multipole Radial Ring NdFeB Magnets, Neodymium Radial Oriented Ring Magnet, Anisotropic bonded ring magnet, Radially Magnetized Sintered NdFeB NIB Ring Permanent Magnet The grade of Sintered NdFeB Ring Radial Magnet we can offer: Grade Br (kGs) Hcb (kOe) Hcj (kOe) (BH)max (MGOe) N35R 11.8-12.9 ≥9.5 ≥12.0 31-37 N38R 12.0-13.2 ≥9.6 […]

Radial Oriented NdFeB Ring

Radial Oriented NdFeB Ring Magnet

Radial Oriented NdFeB Ring Magnet, Neodymium Radial Ring Magnet, Anisotropic bonded ring magnet, Radial Oriented Sintered NdFeB Ring Permanent Magnet The grade of Radial oriented NdFeB Ring Magnet we can offer: Grade Br (kGs) Hcb (kOe) Hcj (kOe) (BH)max (MGOe) N35R 11.8-12.9 ≥9.5 ≥12.0 31-37 N38R 12.0-13.2 ≥9.6 ≥12.0 32-40 N42R 12.2-13.5 ≥9.7 ≥12.0 34-42 […]

Rectangle Bar Everlube Neodymium Magnet

Rectangle Bar Everlube Neodymium Magnet

Rectangle Bar Everlube Neodymium Magnet, 6155 Everlube Block Shaped NdFeB Magnets for Linear Motor, Super Strong Everlube Plating Permanent Magnets, Magnetic plates China Factory Rectangle Bar Everlube Neodymium Magnet Feature: Material neodymium, pure iron, boron ferroalloy and other additives. Grade N35-N52 (M.H.SH.UH.EH.AH) Coating Everlube Shape Rectangle , Long Bar, Block Working temperature(℃) 80℃-250℃ MOQ 100pcs […]

6155 Everlube Magnets for Halbach Array

6155 Everlube Magnets for Halbach Array

6155 Everlube Magnets for Halbach Array, Block Shaped Everlube NdFeB Magnets for halbach assembly, Super Strong Everlube Plating Permanent Magnets, neodymium halbach array magnets assembly for Magnetic plates China Factory 6155 Everlube Magnets for Halbach Array Feature: Material neodymium, pure iron, boron ferroalloy and other additives. Grade N35-N52 (M.H.SH.UH.EH.AH) Coating Everlube Shape Ring Working temperature(℃) […]

Ring Shaped Everlube NdFeB Magnets

Ring Shaped Everlube NdFeB Magnets

Ring Shaped Everlube NdFeB Magnets, Everlube Coated NdFeB Rare Earth Ring Magnet for Sensor and Motor, Super Strong Everlube Plating Permanent Magnets, Everlube coating neodymium magnets China Factory Ring Shaped Everlube NdFeB Magnets Feature: Material neodymium, pure iron, boron ferroalloy and other additives. Grade N35-N52 (M.H.SH.UH.EH.AH) Coating Everlube Shape Ring Working temperature(℃) 80℃-250℃ MOQ 100pcs […]

Everlube Coated NdFeB Rare Earth Block Magnet for Linear Motor

Everlube Coated NdFeB Rare Earth Block Magnet for Linear Motor

Everlube Coated NdFeB Rare Earth Block Magnet for Linear Motor, Super Strong Everlube Coated Permanent Magnets, Customized Everlube industrial motor magnet, Everlube coating rectangle neodymium magnets, Everlube plated magnetic block Everlube Coated NdFeB Rare Earth Block Magnet for Linear Motor Feature: Material neodymium, pure iron, boron ferroalloy and other additives. Grade N35 Coating Everlube Size […]

N52 Cylinder Rare Earth Neodymium Everlube Magnets

N52 Cylinder Rare Earth Neodymium Everlube Magnets

N52 Cylinder Rare Earth Neodymium Everlube Magnets, Customized Strong Everlube Coated Magnets, Everlube industrial magnet, Permanent type Everlube coating neodymium magnets, Everlube coated magnetic rod N52 Cylinder Rare Earth Neodymium Everlube Magnets Feature: Material Neodymium Magnets Grade N52 (or N35-N52, 33M-50M, 30H-48H, 30SH-45SH, 30UH-40UH, 28EH-38EH, 30AH-33AH) Demension Dia 3.175mmx6.35mm or Customized size Coating Everlube (and […]

Customized Everlube Coated Magnets

Customized Everlube Coated Magnets

Customized Everlube Coated Magnets, Magnet Everlube Coating business custom wholesale resist price industrial magnet, Permanent type Everlube coating neodymium magnets, Everlube coated magnetic block disc Customized Everlube Coated Magnets Feature: Material NdFeB Magnet Coating Everlube Magnetization Direction Radially Magnetized, Axially Magnetized, etc. Grade N35-N52 (M.H.SH.UH.EH.AH) Size Customized Size Used Industrial Application Advantages of Everlube coating […]

Custom-made Wind Generator Magnet Assemblies

Custom-made Wind Generator Magnet Assemblies

Custom-made Wind Generator Magnet Assemblies, Sintered NdFeB Wind Power Magnets, Customized Wind Motor rare earth magnet, strong sintered neodymium magnets for wind generators, industrial Ndfeb magnet Custom-made Wind Generator Magnet Assemblies Detailed specifications: 1.Size: Custom-made according to your requirements. 2.Grade:All kind of grade with N35 – N55, 30M – 52M, 30H – 50H, 30SH – […]

Sintered NdFeB Windpower Magnets

Sintered NdFeB Windpower Magnets

Sintered NdFeB Windpower Magnets, Custom-made Wind Generator Motor rare earth magnet assemblies, strong sintered neodymium magnets for wind generators, industrial Ndfeb magnet 8 pcs Sintered NdFeB Windpower Magnets Detailed specifications: 1.Size: Custom-made according to your requirements. 2.Grade:All kind of grade with N35 – N55, 30M – 52M, 30H – 50H, 30SH – 48SH, 28UH – […]

Multi Skew 8 Poles Radial Ring Ndfeb Magnet N40H

Multi Skew 8 Poles Radial Ring Ndfeb Magnet N40H

Multi Skew 8 Poles Radial Ring Ndfeb Magnet N40H, Diametrically Magnetized Multi Skew Poles Radially Ring Neodymium Magnets D32mm, Bonded Ndfeb Multi Poles Radial Ring Magnet, 45 degree Skew Magnetized 8 Poles Multipolar NdFeB Ring Magnets Multi Skew 8 Poles Radial Ring Ndfeb Magnet N40H Item Specifics: Size: Outer Diameter 32mm, Inner Diameter 25mm, Thickness […]

Multi Poles Radially Oriented Diametrically NdFeB Ring N52

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Multi Poles Radially Oriented Diametrically NdFeB Ring N52, Super Strong Radial Ring Rare Earth Neodymium Magnet, Large diameter radiation ring sintered neodymium iron boron magnets, Multi Skew Poles Radial NdFeb Ring STRONG powerful magnet Multi Poles Radially Oriented Diametrically NdFeB Ring N52 Features: Shape: Ring Grade: N52 Material: Sintered Ndfeb Magnets Dimension: O.D. – 100mm, I.D. […]

Super Rare Earth Radial Ring Neodymium Magnet N52

Super Rare Earth Radial Ring Neodymium Magnet N52

Super Rare Earth Radial Ring Neodymium Magnet N52, Multi Poles Radial Magnetized NdFeb Ring Magnets, Large diameter radiation ring sintered neodymium iron boron, Multi Skew Poles Radially Oriented Diametrically NdFeb Ring Magnets Super Rare Earth Radial Ring Neodymium Magnet N52  Features: Shape: Ring Grade: N52 Material: Sintered Ndfeb Magnets Dimension: O.D. – 70mm, I.D. – […]

Strong Uni Pole Radial Oriented Ring Sintered Ndfeb Magnet

Strong Uni Pole Radial Oriented Ring Sintered Ndfeb Magnet

Strong Uni Pole Radial Oriented Ring Sintered Ndfeb Magnet, N40H Multi Poles Radial Diametrically Magnetized NdFeb Ring Magnets, Large diameter anisotropic sintered neodymium iron boron radiation ring, Radial Diametrically Magnetized NdFeb Ring Magnets Strong Uni Pole Radial Oriented Ring Sintered Ndfeb Magnet Features: Shape: Ring Grade: N40H Material: Sintered Ndfeb Magnets Outer Diameter: 70mm Inner […]

Uni Pole Radial Oriented Ring Sintered Neodymium Magnet

Diameter 2″ N40 Uni Pole Radial Oriented Ring Sintered Neodymium Magnet

Diameter 2″ N40 Uni Pole Radial Oriented Ring Sintered Neodymium Magnet, Radial Ring Sintered Ndfeb Magnet, One Pole Radial Diametrically Magnetized Oriented Ring Dia 2″ Rare Earth Neodymium Magnets, D52.8*d40*8mm N40 NI Radially Magnetic Ring Uni Pole Radial Oriented Ring Sintered Neodymium Magnet Specifications: Shape: Ring Material: Sintered Ndfeb Magnets Outer Diameter: 52.8mm Grade: N40 […]

N45 Radial Ring Sintered Ndfeb Magnet

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N45 Radial Ring Sintered Ndfeb Magnet, One Pole Radial Diametrically Magnetized Oriented Ring Dia 1″ Rare Earth Neodymium Magnets, D26*d20*14mm N45 NI Radially Magnetic Ring N45 Radial Ring Sintered Ndfeb Magnet Specifications: Shape: Ring Country/Region of Manufacture: China Material: Sintered Ndfeb Magnets Outer Diameter: 26mm Grade: N45 Inner Diameter: 20mm Plating/Coating: Nickel Height: 14mm Surface […]

Large Diameter Thin-Wall Radial Ring NdFeB Permanent Magnet

Large Diameter Thin-Wall Radial Ring NdFeB Permanent Magnet

Large Diameter Thin-Wall Radial Ring NdFeB Permanent Magnet, Multipolar Radially Orientation Magnetic Ring, Anisotropic Radially Orientation Multipoles Ring Sintered Neodymium Magnets, Radially Orientated Sintered NdFeB Rings, Sintering Rare Earth Neodymium Radial Ring Magnets Large Diameter Thin-Wall Radial Ring NdFeB Permanent Magnet Size: OD 240mm, ID 200mm, High 35mm Customized various sizes Multipolar Radially Orientation Magnetic […]