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.
Bonded Mould Compression NdFeB Magnet
Application Areas
Mould injection NdFeB have various application areas such as:
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℃.
| Bonded Compression NdFeB Typical Magnetic Properties | ||||||||
| Grade Properties | Remanence 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-6 | 0.55~0.62 | 285~370 (3.6~4.6) |
600~755 (7.5~9.5) |
44~56 (5.5~7.0) |
5.5~6.1 | 1.15 | -0.13 | 100 |
| BNP-8L | 0.60~0.64 | 360~400 (4.5~5.0) |
715~800 (9~10) |
56~64 (7.0~8.0) |
5.6~6.1 | 1.15 | -0.13 | 100 |
| BNP-8 | 0.62~0.69 | 385~445 (4.8~5.6) |
640~800 (8~10) |
64~72 (8.0~9.0) |
5.6~6.1 | 1.15 | -0.13 | 120 |
| BNP-8SR | 0.62~0.66 | 410~465 (5.2~5.8) |
880~1120 (11~14) |
64~72 (8.0~9.0) |
5.6~6.1 | 1.13 | -0.13 | 150 |
| BNP-8H | 0.61~0.65 | 410~445 (5.2~5.7) |
1190~1440 (15~18) |
64~72 (8.0~9.0) |
5.9~6.2 | 1.15 | -0.07 | 125 |
| BNP-9 | 0.65~0.70 | 400~440 (5.0~5.5) |
640~800 (8~10) |
70~76 (8.8~9.5) |
5.6~6.1 | 1.22 | -0.12 | 120 |
| BNP-10 | 0.68~0.72 | 420~470 (5.3~5.9) |
640~800 (8~10) |
76~84 (9.5~10.5) |
5.6~6.1 | 1.22 | -0.11 | 120 |
| BNP-11 | 0.70~0.74 | 445~480 (5.6~6.0) |
680~800 (8.5~10) |
80~88 (10~11) |
5.6~6.1 | 1.22 | -0.11 | 120 |
| BNP-11L | 0.70~0.74 | 400~440 (5.0~5.5) |
520~640 (6.5~8) |
78~84 (9.8~10.5) |
5.6~6.1 | 1.26 | -0.11 | 110 |
| BNP-12L | 0.74~0.80 | 420~455 (5.3~5.7) |
520~600 (6.5~7.5) |
84~92 (10.5~11.5) |
5.6~6.1 | 1.26 | -0.08 | 110 |
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