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NdFeB Bonded Magnet

Bonded Mould Compression NdFeB Magnet

Compression bonded magnets are composed of a special form of NdFeB powder with adhesive and using compression molding techniques in simple tools, it can be quickly machined into complex shapes. Since its materials are isotropic, bonded NdFeB magnet can be magnetized in any direction or with multiple poles. Special magnetizing fixtures are required in order to achieve multiple poles magnetization, depending on complexity of design and production.


  • Excellent mechanical strength and surface finish.

  • Compression molded magnets can be manufactured to very tight tolerances.

  • Greater cracking and chipping resistance than other rare earth magnets.

  • Superior energy to weight ratio.

  • Can be molded into a variety of shapes and sizes.

  • Magnetic values up to 10 MGOe.

  • The energy product is 3 times as large as anisotropic ferrite. The intrinsic coercive force is high. During the large-scale production, the magnetic properties are stable and conformity is good.

  • Single-time molding and multi-poles orientation.

  • Low tooling cost.

  • Co-injected assemblies.

  • Effective surface treatment to prevent corrosion.

  • Widely applied in all kinds of mini-motors, auto motors, air-conditioner motors, automatic controlling devices, sensors, drivers, telecom and instrument industry.

  • Stable working temperature: It can be high up to 150℃.



    • Automobile Instrument Cluster

    • Dashboard Instrument

    • Digital Speedometers  

    • Sensors

    • Roll for Copiers

    • DC Micro Motors

    • Stepper Motors

    • Magnet Bearings

    • AC Synchronous Motor Magnets

    • Electrical Meters

    • Coupling Magnets

    • Disk Drives

    • Clock / Timers

    • Reed Relays

    • Educational Kits and Scientific Instruments

      Bonded Compression NdFeB Typical Magnetic Properties
      Grade PropertiesRemanence
      Br
      T(Gs)
      Coercivity
      HCB KA/m(KOe)
      Intrinsic Coercivity
      Hcj
      KA/m(Koe)
      Max. Energy 
      Product 
      BH(max) 
      KJ/m3(MGOe)
      Density  
      g/cm3
      Relative Recoil
      Permeability
      µr
      Temperature Coefficient
      of RemanenceαBr %/ ℃
      Max Operating
      Temperature Tw℃
      BNP-60.55~0.62285~370
      (3.6~4.6)
      600~755
      (7.5~9.5)
      44~56
      (5.5~7.0)
      5.5~6.11.15-0.13100
      BNP-8L0.60~0.64360~400
      (4.5~5.0)
      715~800
      (9~10)
      56~64
      (7.0~8.0)
      5.6~6.11.15-0.13100
      BNP-80.62~0.69385~445
      (4.8~5.6)
      640~800
      (8~10)
      64~72
      (8.0~9.0)
      5.6~6.11.15-0.13120
      BNP-8SR0.62~0.66410~465
      (5.2~5.8)
      880~1120
      (11~14)
      64~72
      (8.0~9.0)
      5.6~6.11.13-0.13150
      BNP-8H0.61~0.65410~445
      (5.2~5.7)
      1190~1440
      (15~18)
      64~72
      (8.0~9.0)
      5.9~6.21.15-0.07125
      BNP-90.65~0.70400~440
      (5.0~5.5)
      640~800
      (8~10)
      70~76
      (8.8~9.5)
      5.6~6.11.22-0.12120
      BNP-100.68~0.72420~470
      (5.3~5.9)
      640~800
      (8~10)
      76~84
      (9.5~10.5)
      5.6~6.11.22-0.11120
      BNP-110.70~0.74445~480 
      (5.6~6.0)
      680~800 
      (8.5~10)
      80~88
      (10~11)
      5.6~6.11.22-0.11120
      BNP-11L0.70~0.74400~440 
      (5.0~5.5)
      520~640 
      (6.5~8)
      78~84
      (9.8~10.5)
      5.6~6.11.26-0.11110
      BNP-12L0.74~0.80420~455 
      (5.3~5.7)
      520~600 
      (6.5~7.5)
      84~92
             (10.5~11.5)
      5.6~6.11.26-0.08110


      Bonded Injection NdFeB Typical Magnetic Properties
      Grade PropertiesRemanence
      Br
      T(GS)
      Coercivity
      Hcb
      KA/m(KOe)
      Intrinsic Coercivity 
      Hcj 
      KA/m(Koe)
      Max. Energy Product BH(max) KJ/m3(MGOe)Density
      g/cm3
      Relative Recoil
      Permeability
      µr
      Temperature Coefficient
      of Remanence
      αBr 
      %/℃
      Max. Operating
      Temperature Tw
      BNI-30.2~0.4120~240
      (1.5~3.0)
      480~640
      (6.0~8.0)
      8~24
      (1.0~3.0)
      3.9~4.41.2-0.15100
      BNI-40.40~0.46250~335
      (3.1~4.2)
      575~735
      (7.2~9.2)
      28~36
      (3.5~4.5)
      4.2~4.91.2-0.13110
      BNI-50.45~0.51280~360
      (3.5~4.5)
      640~800
      (8~10)
      37~44
      (4.6~5.5)
      4.5~5.01.2-0.13120
      BNI-60.51~0.56295~375
      (3.7~4.7)
      640~800
      (8~10)
      44~52
      (5.5~6.5)
      4.7~5.11.13-0.11120
      BNI-6H0.48~0.56335~400
      (4.2~5.0)
      1035~1355
      (13~17)
      40~52
      (5.0~6.5)
      4.8~5.21.13-0.15130
      BNI-70.54~0.64320~400
      (4.0~5.0)
      640~800
      (8~10)
      51~59
      (6.5~7.5)
      5.0~5.51.13-0.11120
      BNI-5SR (PPS)0.45~0.50300~360
      (3.8~4.5)
      875~1115
      (11~14)
      36~44
      (4.5~5.5)
      4.9~5.41.13-0.13150
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