Compression bonded magnet can offers higher magnetic strength than injection moulded magnets.
Bonded NdFeB magnets due to their higher magnetic partical density, but is limited to simple geometric shapes due to the compaction process. The epoxy coating is very resistant to normal industrial alovent and automotive fluids. The normal applications of these magnets rang from below -40 degreeand beyong 165 degree.
Magnetic Characteristics of Bonded Compression NdFeB:
Properties Grade | Max Energy Product | Remanence | Coercive Force | Intrinsic Coercive Force | Density | Relative Recoil Permeability | Temp Coeff | Max. Working Temp |
(BH)max | Br | Hcb | Hcj | D | | α Br | Tw |
KJ/m3(MGOe) | T | KA/m(KOe) | KA/m(KOe) | g/cm3 | μ r | %/ ℃ | ℃ |
BNP-6 | 44-56(5.5-7.0) | 0.55-0.62 | 285-370(3.6-4.6) | 600-755(7.5-9.5) | 5.5-6.1 | 1.15 | -0.13 | 100 |
BNP-8L | 56-64(7.0-8.0) | 0.60-0.64 | 360-400(4.5-5.0) | 715-800(9-10) | 5.5-6.1 | 1.15 | -0.13 | 100 |
BNP-8 | 64-72(8.0-9.0) | 0.62-0.69 | 385-445(4.8-5.6) | 640-800(8-10) | 5.5-6.1 | 1.15 | -0.13 | 120 |
BNP-8SR | 64-72(8.0-9.0) | 0.62-0.66 | 410-465(5.2-5.8) | 880-1120(11-14) | 5.5-6.1 | 1.13 | -0.13 | 150 |
BNP-8H | 64-72(8.0-9.0) | 0.61-0.65 | 410-445(5.2-5.7) | 1190-1440(15-18) | 5.9-6.2 | 1.15 | -0.07 | 125 |
BNP-9 | 70-76(8.8-9.5) | 0.65-0.70 | 400-440(5.0-5.5) | 640-800(8-10) | 5.6-6.1 | 1.22 | -0.12 | 120 |
BNP-10 | 76-84(9.5-10.5) | 0.68-0.72 | 420-470(5.3-5.9) | 640-800(8-10) | 5.6-6.1 | 1.22 | -0.11 | 120 |
BNP-11 | 80-88(10-11) | 0.70-0.74 | 445-480(5.6-6.0) | 680-800(8.5-10) | 5.6-6.1 | 1.22 | -0.11 | 120 |
BNP-11L | 78-84(9.8-10.5) | 0.70-0.74 | 400-440(5.0-5.5) | 520-640(6.5-8) | 5.6-6.1 | 1.26 | -0.11 | 110 |
BNP-12L | 84-92(10.5-11.5) | 0.74-0.80 | 420-455(5.3-5.7) | 520-600(6.5-7.5) | 5.6-6.1 | 1.26 | -0.08 | 110 |
Magnetic Characteristics of Bonded Injection NdFeB :
Properties Grade | Max Energy Product | Remanence | Coercive Force | Intrinsic Coercive Force | Density | Relative Recoil Permeability | Temp Coeff | Max. Working Temp |
(BH)max | Br | Hcb | Hcj | D | | α Br | Tw |
KJ/m3(MGOe) | T | KA/m(KOe) | KA/m(KOe) | g/cm3 | μ r | %/ ℃ | ℃ |
BNI-3 | 8-24(1.0-3.0) | 0.20-0.40 | 120-240(1.5-3.0) | 480-640(6.0-8.0) | 3.9-4.4 | 1.2 | -0.15 | 100 |
BNI-4 | 28-36(3.5-4.5) | 0.40-0.46 | 250-335(3.1-4.2) | 575-735(7.2-9.2) | 4.2-4.9 | 1.2 | -0.13 | 110 |
BNI-5 | 37-44(4.6-5.5) | 0.45-0.51 | 280-360(3.5-4.5) | 640-800(8-10) | 4.5-5.0 | 1.2 | -0.13 | 120 |
BNI-6 | 44-52(5.5-6.5) | 0.51-0.56 | 295-375(3.7-4.7) | 640-800(8-10) | 4.7-5.1 | 1.13 | -0.11 | 120 |
BNI-6H | 40-52(5.0-6.5) | 0.48-0.56 | 335-400(4.2-5.0) | 1035-1355(13-17) | 4.8-5.2 | 1.13 | -0.15 | 130 |
BNI-7 | 51-59(6.5-7.5) | 0.54-0.64 | 320-400(4.0-5.0) | 640-800(8-10) | 5.0-5.5 | 1.13 | -0.11 | 120 |
BNI-5SR(PPS) | 36-44(4.5-5.5) | 0.45-0.50 | 300-360(3.8-4.5) | 875-1115(11-14) | 4.9-5.4 | 1.13 | -0.13 | 150 |
T The demagnetized curve of
Bonded compression NdFeB magnet
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