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Bonded Magnets

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Bonded Magnets are typically manufactured via compression or injection molding processes, with NdFeB and ferrite being the dominant magnetic components. They are widely used in automotive applications, such as: oil pump motors, window lift motors, car seat motors, auto fan motors, wiper motors, sensors, and micro-motor applications. These magnets are also used in: computers, home applications, office automation and electric tools. 

Bonded magnets are typically used anywhere Br can be sacrificed for very tight physical and magnetic properties. They exhibit high structural integrity, high resistance to corrosion, and can be made into complex shapes. 

Please refer to the below table for Bonded magnet materials specs:

Download Bonded Magnets Materials Chart - Click Here 

Item Grade Remanence Coercivity Max Energy Product Max Working Temperature Density
Br HcB HcJ (BH)max TwMax ρ
T kGs kA/m kOe kA/m kOe kJ/m³ MGOe ° C g/cm³
Compression Molding NdFeB Magnet KBM-2 0.30~0.40 3.0-4.0 160~240 2.0~3.0 480~640 6.0~8.0 16~24 2.0~3.0 ≤120 4.5~6.0
KBM-4 0.40~0.50 4.0~5.0 240~320 3.0~4.0 560~720 7.0~9.0 32~44 4.0~5.5 ≤120 5.2~6.0
KBM-6 0.50~0.60 5.0~6.0 320~400 4.0~5.0 480~640 6.0~8.0 48~60 6.0~7.5 ≤120 5.5~6.0
KBM-8 0.60~0.68 6.0~6.8 360~440 4.5~5.5 640~800 8.0~10.0 64~72 8.0~9.0 ≤150 5.8~6.1
KBM-8H 0.60~0.65 6.0~6.5 400~480 5.0~6.0 1120~1280 14.0~16.0 60~68 7.5~8.5 ≤160 5.8~6.2
KBM-8L 0.65~0.68 6.5~6.8 400~480 5.0~6.0 900~1120 11.0~14.0 64~72 8.0~9.0 ≤160 5.8~6.2
KBM-9 0.60~0.68 6.0~6.8 400~480 5.0~6.0 640~800 8.0~10.0 68~72 8.5~9.0 ≤150 5.8~6.2
KBM-10 0.68~0.73 6.8~7.3 400~480 5.0~6.0 640~800 8.0~10.0 76~84 9.5~10.5 ≤150 5.8~6.2
KBM-12 0.71~0.75 7.1~7.5 440~520 5.5~6.5 720~800 9.0~10.0 84~96 10.5~12.0 ≤150 6.0~6.2
KBM-12L 0.72~0.76 7.2~7.6 400~480 5.0~6.0 480~640 6.0~8.0 84~96 10.5~12.0 ≤140 6.0~6.2
Injection Molding NdFeB Magnet KBI-3 0.20~0.30 2.0~3.0 160~240 2.0~3.0 480~640 6.0~8.0 12~24 1.5~3.0 ≤100 3.9~4.4
KBI-4 0.35~0.45 3.5~4.5 240~320 3.0~4.0 560~720 7.0~9.0 24~36 3.0~4.5 ≤120 4.2~4.9
KBI-5 0.45~0.52 4.5~5.2 320~360 4.0~4.5 560~720 7.0~9.0 36~44 4.5~5.5 ≤120 4.5~5.0
KBI-5H(PPS) 0.48~0.52 4.8~5.2 400~480 5.0~6.0 880~1040 11.0~13.0 36~44 4.5~5.5 ≤150 4.9~5.4
KBI-6 0.50~0.55 5.0~5.5 320~440 4.0~5.5 640~800 8.0~10.0 44~52 5.5~6.5 ≤120 4.7~5.1
KBI-7 0.54~0.64 5.4~6.4 320~400 4.0~5.0 640~800 8.0~10.0 52~60 6.5~7.5 ≤120 5.0~5.5
KBI-8 0.64~0.74 6.4~7.4 400~480 5.0~6.0 640~800 8.0~10.0 68~76 8.5~9.5 ≤120 5.5~5.9
Injection Molding Ferrite Magnet KBI-F1.5 0.22~0.24 2.2~2.4 160~167 2.00~2.10 231~240 2.90~3.00 11.6~12.4 1.45~1.55 ≤120 3.25
KBI-F1.9 0.27~0.29 2.7~2.9 180~186 2.25~2.33 216~228 2.70~2.85 14.8~15.6 1.85~1.95 ≤120 3.63
KBI-F2.0 0.28~0.29 2.8~2.9 184~200 2.30~2.50 216~246 2.70~3.10 15.6~16.4 1.95~2.05 ≤120 3.7
KBI-F2.1 0.28~0.29 2.8~2.9 190~204 2.38~2.55 224~249 2.80~3.12 16.4~17.2 2.05~2.15 ≤120 3.75
KBI--F1.7(PPS) 0.25~0.26 2.5~2.6 167~175 2.10~2.20 208~216 2.60~2.70 13.6~14.0 1.70~1.75 ≤160 3.65
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