Application: linear actuators, microphone assemblies, servo motors, DC motors (automotive starters), computer hard disk drives, printers, speakers and etc., wildly used in electric equipment, medical equipment, magnetic resonance imaging equipment, packaging, hardware machinery, aerospace and other fields
Surface: Sintered NdFeB Magnets are prone to rust, surface treatment is usually
necessary, according to customer's requirements, one or two coating layers are
usually needed depending on different working environments. The coating
materials usually used as Nickel, Zinc, Copper, Epoxy, and etc.
| Magnetic characteristic of Sintered NdFeB magnet | |||||
| Grade | Residual Induction Br |
Coercive Force Hcb |
Intrinsic Coercive Force iHc |
Maximum Energy Product BH max |
Working Temperature TW |
| mt (kGs) | Koe (kA/m) | Koe (kA/m) | kJ/m3 (MGOe) | °C | |
| N35 | 1170-1210 (11.7-12.1) | ≧10.8 (≧860) | ≧12 (≧955) | 263-287 (33-36) | 80 |
| N38 | 1210-1250 (12.1-12.5) | ≧10.8 (≧860) | ≧12 (≧955) | 287-310 (36-39) | 80 |
| N40 | 1250-1280 (12.5-12.8) | ≧11.6 (≧923) | ≧12 (≧955) | 302-326 (38-41) | 80 |
| N42 | 1280-1320 (12.8-13.2) | ≧11.6 (≧923) | ≧12 (≧955) | 318-342 (40-43) | 80 |
| N45 | 1320-1380 (13.2-13.8) | ≧11.0 (≧876) | ≧12 (≧955) | 342-366 (43-46) | 80 |
| N48 | 1380-1420 (13.8-14.2) | ≧10.5 (≧835) | ≧12 (≧955) | 366-390 (46-49) | 80 |
| N50 | 1380-1450 (13.8-14.5) | ≧10.5 (≧835) | ≧12 (≧955) | 474-406 (47-51) | 80 |
| 33M | 1130-1170 (11.3-11.7) | ≧10.3 (≧820) | ≧14 (≧1114) | 247-263 (31-33) | 100 |
| 35M | 1170-1210 (11.7-12.1) | ≧10.8 (≧860) | ≧14 (≧1114) | 263-287 (33-36) | 100 |
| 38M | 1210-1250 (12.1-12.5) | ≧11.0 (≧876) | ≧14 (≧1114) | 287-310 (36-39) | 100 |
| 40M | 1250-1280 (12.5-12.8) | ≧11.4 (≧907) | ≧14 (≧1114) | 302-326 (38-41) | 100 |
| 42M | 1280-1320 (12.8-13.2) | ≧11.6 (≧923) | ≧14 (≧1114) | 318-342 (40-43) | 100 |
| 45M | 1320-1380 (13.2-13.8) | ≧11.8 (≧939) | ≧14 (≧1114) | 342-366 (43-46) | 100 |
| 48M | 1360-1400 (13.6-14.0) | ≧11.8 (≧939) | ≧14 (≧1114) | 366-390 (46-49) | 100 |
| 30H | 1080-1130 (10.8-11.3) | ≧10.2 (≧812) | ≧17 (≧1353) | 223-247 (28-31) | 120 |
| 33H | 1130-1170 (11.3-11.7) | ≧10.6 (≧844) | ≧17 (≧1353) | 247-263 (31-33) | 120 |
| 35H | 1170-1210 (11.7-12.1) | ≧11.0 (≧876) | ≧17 (≧1353) | 263-287 (33-36) | 120 |
| 38H | 1210-1250 (12.1-12.5) | ≧11.2 (≧890) | ≧17 (≧1353) | 287-310 (36-39) | 120 |
| 40H | 1250-1280 (12.5-12.8) | ≧11.5 (≧915) | ≧17 (≧1353) | 302-326 (38-41) | 120 |
| 42H | 1280-1320 (12.8-13.2) | ≧12.0 (≧955) | ≧17 (≧1353) | 318-342 (40-43) | 120 |
| 45H | 1320-1380 (13.2-13.5) | ≧12.0 (≧955) | ≧17 (≧1353) | 335-366 (42-46) | 120 |
| 30SH | 1080-1130 (10.8-11.3) | ≧10.0 (≧796) | ≧21 (≧1672) | 223-247 (28-31) | 150 |
| 33SH | 1130-1170 (11.3-11.7) | ≧10.6 (≧844) | ≧21 (≧1672) | 247-263 (31-33) | 150 |
| 35SH | 1170-1210 (11.7-12.1) | ≧11.0 (≧876) | ≧21 (≧1672) | 263-287 (33-36) | 150 |
| 38SH | 1210-1250 (12.1-12.5) | ≧11.4 (≧907) | ≧21 (≧1672) | 287-310 (36-39) | 150 |
| 40SH | 1250-1280 (12.5-12.8) | ≧11.8 (≧939) | ≧21 (≧1672) | 302-326 (38-41) | 150 |
| 42SH | 1280-1320 (12.8-13.2) | ≧11.8 (≧939) | ≧21 (≧1672) | 320-343 (40-43) | 150 |
| 30UH | 1080-1130 (10.8-11.3) | ≧10.2 (≧812) | ≧25 (≧1990) | 223-247 (28-31) | 180 |
| 33UH | 1130-1170 (11.3-11.7) | ≧10.7 (≧852) | ≧25 (≧1990) | 247-263 (31-33) | 180 |
| 35UH | 1170-1210 (11.7-12.1) | ≧10.7 (≧852) | ≧25 (≧1990) | 263-287 (33-36) | 180 |
| 28EH | 1040-1080 (10.4-10.8) | ≧9.5 (≧756) | ≧30 (≧2388) | 207-231 (26-29) | 200 |
| 30EH | 1080-1130 (10.8-11.3) | ≧9.5 (≧756) | ≧30 (≧2388) | 223-247 (28-31) | 200 |
| 33EH | 1130-1170 (11.3-11.7) | ≧10.2 (≧812) | ≧30 (≧2388) | 247-263 (31-33) | 200 |
| 35EH | 1170-1210 (11.7-12.1) | ≧10.2 (≧812) | ≧30 (≧2388) | 263-287 (33-36) | 200 |
Bonded NdFeB magnet is usually made of NdFeB alloy powder mixed with epoxy resin by repression, can also be mixed with plastic by injection or extrusion molding. It is of high magnetic performance, high dimensional accuracy, variety of shape, corrosion resistance, diversification of magnetization, suitable for high-volume, high production efficiency. Mainly used in a variety of micro motors, such as spindle motors, stepper motors, synchronous motors, DC motors, brushless DC motors.
| Magnetic characteristic of Bonded NdFeB magnet | |||||||
| Grade | Residual Induction Br |
Coercive Force Hcb |
Intrinsic Coercive Force iHc |
Maximum Energy Product BH max |
Reversible permeability |
Reversible temperature coefficient αBr |
Working Temperature TW |
| T (kGs) | kA/m (kOe) | kA/m (kOe) | kJ/m3 (MGOe) | μ r | %/°C | °C | |
| BNP-6 | 0.55-0.62 (5.5-6.2) | 285-370 (3.6-4.6) | 600-755 (7.5-9.5) | 44-56(5.5-7) | 1.15 | -0.13 | 100 |
| BNP-8L | 0.60-0.64 (6.0-6.4) | 360-400 (4.5-5.0) | 715-800 (9-10) | 56-64 (7.0-8.0) | 1.15 | -0.13 | 110 |
| BNP-8 | 0.62-0.69 (6.2-6.9) | 385-445 (4.8-5.6) | 640-800 (8-10) | 64-72 (8.0-9.0) | 1.15 | -0.13 | 120 |
| BNP-8SR | 0.62-0.66 (6.2-6.6) | 410-465 (5.2-5.8) | 880-1120 (11-14) | 64-72 (8.0-9.0) | 1.13 | -0.13 | 150 |
| BNP-8H | 0.61-0.65 (6.1-6.5) | 410-455 (5.2-5.7) | 1190-1440 (15-18) | 64-72 (8.0-9.0) | 1.15 | -0.07 | 125 |
| BNP-9 | 0.65-0.70 (6.5-7.0) | 400-440 (5.0-5.5) | 640-800 (8-10) | 70-76 (8.8-9.5) | 1.22 | -0.12 | 120 |
| BNP-10 | 0.68-0.72 (6.8-7.2) | 420-470 (5.3-5.9) | 640-800 (8-10) | 76-84 (9.5-10.5) | 1.22 | -0.11 | 120 |
| BNP-11 | 0.70-0.74 (7.0-7.4) | 445-480 (5.6-6.0) | 680-800 (8.5-10) | 80-88 (10.0-11.0) | 1.22 | -0.11 | 120 |
| BNP-11L | 0.70-0.74 (7.0-7.4) | 400-440 (5.0-5.5) | 520-640 (6.5-8) | 78-84 (9.8-10.5) | 1.26 | -0.11 | 110 |
| BNP-12L | 0.74-0.80 (7.4-8.0) | 420-455 (5.3-5.7) | 520-600 (6.5-7.5) | 84-92 (10.5-11.5) | 1.26 | -0.08 | 110 |
