EV / BLDC Motors
N42SH–N48SH
High torque density in compact rotor
NdFeB Permanent Magnets
Custom neodymium magnets for compact, high-performance magnetic circuits. Start with the geometry and working conditions; compare the published grades below.
Product Range
NdFeB Magnets — Product Gallery
Product forms, uses and selection considerations. Final specifications are agreed for each project.
Block Magnets
Rectangular formats for the specified magnetic circuit.
Ring Magnets
Bore, diameter and magnetization matched to the interface.
Custom Geometries
Drawing-led shapes for space-constrained designs.
Motor Arc Segments
Matching arc segments for the specified rotor.
Specify the Magnetic Operating Point
A shape is only the starting point. Define the magnetization direction, working gap and continuous / peak temperature before selecting a grade from the tables.
For coated parts, specify the finish, contact medium and bonding interface. Agree dimensional inspection after coating and the magnetic acceptance method.
Compare NdFeB grade data- Working-point and demagnetization requirements
- Coating thickness, adhesion and environmental tests
- Grade data, drawing datums and selected inspection records
SELECTION GUIDEApplication selection notesExplore applications and requirements
Why NdFeB?
Choose NdFeB when the magnetic circuit calls for a high energy product in a compact space. Grade, temperature, geometry and demagnetizing field must be reviewed together; the examples below are starting points, not final design approvals.
Applications
Sensors & Encoders
N35–N42
Strong, stable field in small package
Magnetic Separators
N42–N52
High field gradient for fine particle capture
Wind Turbine Generators
N42SH–N48SH
Direct-drive efficiency at elevated temp
Acoustic Devices
N35–N45
Compact drivers with strong flux
Magnetic Couplings
N38SH–N42SH
Torque through sealed barriers
Application examples are selection references. Validate temperature, magnetic circuit, corrosion protection and acceptance conditions for the actual assembly.
NdFeB Grades & Technical Data
Use this single reference for grade properties, application notes and available datasheets. Confirm the selected specification with engineering before ordering.
Application Selection Notes
| Grade | Temp. reference* | Typical application |
|---|---|---|
| N35 | 80°C | General purpose, cost-effective |
| N42 | 80°C | High performance standard |
| N45SH | 150°C | EV motors, high-temp |
| N48SH | 150°C | Premium motor grade |
| N38UH | 180°C | Aerospace, high-coercivity |
| N35EH | 200°C | Extreme temperature |
*Temperature values are selection references, not part-specific limits. Confirm the grade, magnetic circuit and test conditions before specifying.
All published grades are available below. Filter by series or grade name, then select up to four entries to compare. Final selection requires review of the complete operating conditions.
Scroll to view more columns.
| Name | Download | Grade | Br mT (kGs) |
Hcb kA/m (kOe) |
Hcj kA/m (kOe) |
(BH)max kJ/m³ (MGOe) |
αBr %/°C |
βHcj %/°C |
|---|---|---|---|---|---|---|---|---|
| S-NdFeB 280/96 | N35 | 1180-1230 (11.8-12.3) | ≥876 (≥11) | ≥955 (≥12) | 263-287 (33-36) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 300/96 | N38 | 1230-1260 (12.3-12.6) | ≥899 (≥11.3) | ≥955 (≥12) | 287-310 (36-39) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 320/96 | N40 | 1260-1290 (12.6-12.9) | ≥912 (≥11.5) | ≥955 (≥12) | 302-326 (38-41) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 335/96 | N42 | 1290-1330 (12.9-13.3) | ≥923 (≥11.6) | ≥955 (≥12) | 318-342 (40-43) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 360/96 | N45 | 1330-1370 (13.3-13.7) | ≥931 (≥11.7) | ≥955 (≥12) | 342-366 (43-46) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 380/96 | N48 | 1370-1400 (13.7-14.0) | ≥939 (≥11.8) | ≥955 (≥12) | 366-390 (46-49) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 400/96 | N50 | 1390-1430 (13.9-14.3) | ≥947 (≥11.9) | ≥955 (≥12) | 374-406 (47-51) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 415/96 | N52 | 1420-1460 (14.2-14.6) | ≥947 (≥11.9) | ≥955 (≥12) | 390-414(49-52) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 430/96 | N54 | 1450-1490 (14.5-14.9) | ≥912 (≥11.5) | ≥955 (≥12) | 406-438 (51-55) | 0.10-0.124 | 0.65-0.80 | |
| S-NdFeB 280/111 | 35M | 1180-1230 (11.8-12.3) | ≥899 (≥11.3) | ≥1114 (≥14) | 263-287 (33-36) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 300/111 | 38M | 1230-1260 (12.3-12.6) | ≥923 (≥11.6) | ≥1114 (≥14) | 287-310 (36-39) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 320/111 | 40M | 1260-1290 (12.6-12.9) | ≥947 (≥11.9) | ≥1114 (≥14) | 302-326 (38-41) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 335/111 | 42M | 1290-1330 (12.9-13.3) | ≥971 (≥12.2) | ≥1114 (≥14) | 318-342 (40-43) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 360/111 | 45M | 1330-1370 (13.3-13.7) | ≥1002 (≥12.6) | ≥1114 (≥14) | 342-366 (43-46) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 380/111 | 48M | 1370-1400 (13.7-14.0) | ≥1027 (≥12.9) | ≥1114 (≥14) | 366-390 (46-49) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 400/111 | 50M | 1390-1430 (13.9-14.3) | ≥1035 (≥13.0) | ≥1114 (≥14) | 374-406 (47-51) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 415/111 | 52M | 1420-1460 (14.2-14.6) | ≥995 (≥12.5) | ≥1114 (≥14) | 390-414(49-52) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 430/111 | 54M | 1450-1490 (14.5-14.9) | ≥995 (≥12.5) | ≥1114 (≥14) | 406-438 (51-55) | 0.10-0.124 | 0.60-0.75 | |
| S-NdFeB 240/135 | 30H | 1080-1140 (10.8-11.4) | ≥827 (≥10.4) | ≥1353 (≥17) | 223-247 (28-31) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 260/135 | 33H | 1140-1180 (11.4-11.8) | ≥860 (≥10.8) | ≥1353 (≥17) | 247-271 (31-34) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 280/135 | 35H | 1180-1230 (11.8-12.3) | ≥899 (≥11.3) | ≥1353 (≥17) | 263-287 (33-36) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 300/135 | 38H | 1230-1260 (12.3-12.6) | ≥923 (≥11.6) | ≥1353 (≥17) | 287-310 (36-39) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 320/135 | 40H | 1260-1290 (12.6-12.9) | ≥947 (≥11.9) | ≥1353 (≥17) | 302-326 (38-41) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 335/135 | 42H | 1290-1330 (12.9-13.3) | ≥971 (≥12.2) | ≥1353 (≥17) | 318-342 (40-43) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 360/135 | 45H | 1330-1370 (13.3-13.7) | ≥1003 (≥12.6) | ≥1353 (≥17) | 342-366 (43-46) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 380/135 | 48H | 1370-1400 (13.7-14.0) | ≥1035 (≥13.0) | ≥1353 (≥17) | 366-390 (46-49) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 400/135 | 50H | 1390-1430 (13.9-14.3) | ≥1058 (≥13.3) | ≥1353 (≥17) | 374-406 (47-51) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 415/127 | 52H | 1420-1460 (14.2-14.6) | ≥1074 (≥13.5) | ≥1353 (≥17) | 390-414(49-52) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 430/127 | 54H | 1450-1490 (14.5-14.9) | ≥1074 (≥13.5) | ≥1274 (≥16) | 406-438 (51-55) | 0.09-0.120 | 0.55-0.70 | |
| S-NdFeB 240/159 | 30SH | 1080-1140 (10.8-11.4) | ≥827 (≥10.4) | ≥1592 (≥20) | 223-247 (28-31) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 260/159 | 33SH | 1140-1180 (11.4-11.8) | ≥860 (≥10.8) | ≥1592 (≥20) | 247-271 (31-34) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 280/159 | 35SH | 1180-1230 (11.8-12.3) | ≥899 (≥11.3) | ≥1592 (≥20) | 263-287 (33-36) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 300/159 | 38SH | 1230-1260 (12.3-12.6) | ≥923 (≥11.6) | ≥1592 (≥20) | 287-310 (36-39) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 320/159 | 40SH | 1260-1290 (12.6-12.9) | ≥947 (≥11.9) | ≥1592 (≥20) | 302-326 (38-41) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 335/159 | 42SH | 1290-1330 (12.9-13.3) | ≥971 (≥12.2) | ≥1592 (≥20) | 318-342 (40-43) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 335/167 | N42SH-HRE | 1310-1330 (13.1-13.3) | ≥1020 (≥12.8) | ≥1671 (≥21.0) | 333-341 (42.0-43.0) | -0.125 | -0.600 | |
| S-NdFeB 360/159 | 45SH | 1330-1370 (13.3-13.7) | ≥1003 (≥12.6) | ≥1592 (≥20) | 342-366 (43-46) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 380/159 | 48SH | 1370-1400 (13.7-14.0) | ≥1035 (≥13.0) | ≥1592 (≥20) | 366-390 (46-49) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 400/159 | 50SH | 1390-1430 (13.9-14.3) | ≥1058 (≥13.3) | ≥1592 (≥20) | 374-406 (47-51) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 430/175 | N54SH | 1460-1480 (14.6-14.8) | ≥1136 (≥14.3) | ≥1751 (≥22.0) | 413-421 (52.0-53.0) | -0.120 | -0.600 | |
| S-NdFeB 415/159 | 52SH | 1420-1460 (14.2-14.6) | ≥1074 (≥13.5) | ≥1512 (≥19) | 390-414(49-52) | 0.09-0.120 | 0.50-0.65 | |
| S-NdFeB 220/199 | 28UH | 1040-1090 (10.4-10.9) | ≥780 (≥9.8) | ≥1990 (≥25) | 207-231 (26-29) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 240/199 | 30UH | 1080-1140 (10.8-11.4) | ≥827 (≥10.4) | ≥1990 (≥25) | 223-247 (28-31) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 260/199 | 33UH | 1140-1180 (11.4-11.8) | ≥860 (≥10.8) | ≥1990 (≥25) | 247-271 (31-34) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 280/199 | 35UH | 1180-1230 (11.8-12.3) | ≥899 (≥11.3) | ≥1990 (≥25) | 263-287 (33-36) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 300/199 | 38UH | 1230-1260 (12.3-12.6) | ≥923 (≥11.6) | ≥1990 (≥25) | 287-310 (36-39) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 320/199 | 40UH | 1260-1290 (12.6-12.9) | ≥947 (≥11.9) | ≥1990 (≥25) | 302-326 (38-41) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 335/199 | 42UH | 1290-1330 (12.9-13.3) | ≥971 (≥12.2) | ≥1990 (≥25) | 318-342 (40-43) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 360/199 | 45UH | 1330-1370 (13.3-13.7) | ≥1003 (≥12.6) | ≥1990 (≥25) | 342-366 (43-46) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 380/199 | 48UH | 1360-1400 (13.6-14.0) | ≥1035 (≥13.0) | ≥1990 (≥25) | 358-390 (45-49) | 0.09-0.110 | 0.50-0.60 | |
| S-NdFeB 415/207 | N52UH | 1440-1460 (14.4-14.6) | ≥1120 (≥14.1) | ≥2069 (≥26.0) | 402-410 (50.5-51.5) | -0.115 | -0.500 | |
| S-NdFeB 220/239 | 28EH | 1040-1090 (10.4-10.9) | ≥780 (≥9.8) | ≥2388 (≥30) | 207-231 (26-29) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 240/239 | 30EH | 1080-1140 (10.8-11.4) | ≥827 (≥10.4) | ≥2388 (≥30) | 223-247 (28-31) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 260/239 | 33EH | 1140-1180 (11.4-11.8) | ≥860 (≥10.8) | ≥2388 (≥30) | 247-271 (31-34) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 280/239 | 35EH | 1180-1230 (11.8-12.3) | ≥899 (≥11.3) | ≥2388 (≥30) | 263-287 (33-36) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 300/239 | 38EH | 1230-1260 (12.3-12.6) | ≥923 (≥11.6) | ≥2388 (≥30) | 287-310 (36-39) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 320/239 | 40EH | 1260-1290 (12.6-12.9) | ≥947 (≥11.9) | ≥2388 (≥30) | 302-326 (38-41) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 335/239 | 42EH | 1290-1330 (12.9-13.3) | ≥971 (≥12.2) | ≥2388 (≥30) | 318-342 (40-43) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 360/231 | 45EH | 1330-1370 (13.3-13.7) | ≥1003 (≥12.6) | ≥2308 (≥29) | 342-366 (43-46) | 0.09-0.110 | 0.45-0.55 | |
| S-NdFeB 360/287 | N45AH | 1340-1350 (13.4-13.5) | ≥1039 (≥13.1) | ≥2865 (≥36.0) | 342-350 (43.0-44.0) | -0.115 | -0.400 | |
| S-NdFeB 400/247 | N50EH | 1410-1430 (14.1-14.3) | ≥1097 (≥13.8) | ≥2467 (≥31.0) | 385-392 (48.5-49.2) | -0.115 | -0.450 | |
| S-NdFeB 220/279 | 28TH | 1040-1090 (10.4-10.9) | ≥780 (≥9.8) | ≥2786 (≥35) | 207-231 (26-29) | 0.09-0.110 | 0.40-0.50 | |
| S-NdFeB 240/279 | 30TH | 1080-1140 (10.8-11.4) | ≥827 (≥10.4) | ≥2786 (≥35) | 223-247 (28-31) | 0.09-0.110 | 0.40-0.50 | |
| S-NdFeB 260/279 | 33TH | 1140-1180 (11.4-11.8) | ≥860 (≥10.8) | ≥2786 (≥35) | 247-271 (31-34) | 0.09-0.110 | 0.40-0.50 | |
| S-NdFeB 280/279 | 35TH | 1180-1230 (11.8-12.3) | ≥899 (≥11.3) | ≥2786 (≥35) | 263-287 (33-36) | 0.09-0.110 | 0.40-0.50 | |
| S-NdFeB 300/279 | 38TH | 1230-1260 (12.3-12.6) | ≥923 (≥11.6) | ≥2786 (≥35) | 287-310 (36-39) | 0.09-0.110 | 0.40-0.50 | |
| S-NdFeB 320/279 | 40TH | 1260-1290 (12.6-12.9) | ≥947 (≥11.9) | ≥2786 (≥35) | 302-326 (38-41) | 0.09-0.110 | 0.40-0.50 | |
| S-NdFeB 335/270 | 42TH | 1290-1330 (12.9-13.3) | ≥971 (≥12.2) | ≥2706 (≥34) | 318-342 (40-43) | 0.09-0.110 | 0.40-0.50 | |
| S-NdFeB 415/135 | G-52H | 1430-1460 (14.3-14.6) | ≥1074 (≥13.5) | ≥1353 (≥17) | 398-422(50-53) | 0.11-0.13 | 0.60-0.70 | |
| S-NdFeB 437/135 | G-55H | 1460-1500 (14.6-15.0) | ≥1098 (≥13.8) | ≥1353 (≥17) | 421-446 (53-56) | 0.11-0.13 | 0.60-0.70 | |
| S-NdFeB 380/159 | G-48SH | 1370-1400(13.7-14.0) | ≥1035 (≥13.0) | ≥1600(≥20) | 366-390(46-49) | 0.11-0.13 | 0.60-0.65 | |
| S-NdFeB 400/159 | G-50SH | 1400-1430 (14.0-14.3) | ≥1058 (≥13.3) | ≥1600(≥20) | 374-406(47-51) | 0.11-0.13 | 0.60-0.65 | |
| S-NdFeB 415/159 | G-52SH | 1430-1460 (14.3-14.6) | ≥1074 (≥13.5) | ≥1600(≥20) | 398-422(50-53) | 0.11-0.13 | 0.60-0.65 | |
| S-NdFeB 437/159 | G-55SH | 1460-1500 (14.6-15.0) | ≥1098 (≥13.8) | ≥1600(≥20) | 421-446 (53-56) | 0.11-0.13 | 0.60-0.65 | |
| S-NdFeB 335/199 | G-42UH | 1290-1330(12.9-13.3) | ≥971 (≥12.2) | ≥1990(≥25) | 318-342(40-43) | 0.11-0.12 | 0.50-0.60 | |
| S-NdFeB 360/199 | G-45UH | 1330-1370(13.3-13.7) | ≥1003(≥12.6) | ≥1990(≥25) | 342-366(43-46) | 0.11-0.12 | 0.50-0.60 | |
| S-NdFeB 380/199 | G-48UH | 1370-1400(13.7-14.0) | ≥1035 (≥13.0) | ≥1990(≥25) | 366-390(46-49) | 0.11-0.12 | 0.50-0.60 | |
| S-NdFeB 400/199 | G-50UH | 1400-1430 (14.0-14.3) | ≥1058 (≥13.3) | ≥1990(≥25) | 374-406(47-51) | 0.11-0.12 | 0.50-0.60 | |
| S-NdFeB 415/199 | G-52UH | 1430-1460 (14.3-14.6) | ≥1074 (≥13.5) | ≥1990(≥25) | 398-422(50-53) | 0.11-0.12 | 0.50-0.60 | |
| S-NdFeB 260/239 | G-33EH | 1140-1180(11.4-11.8) | ≥860 (≥10.8) | ≥2388(≥30) | 247-271(31-34) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 280/239 | G-35EH | 1180-1230(11.8-12.3) | ≥899 (≥11.3) | ≥2388(≥30) | 263-287(33-36) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 300/239 | G-38EH | 1230-1260(12.3-12.6) | ≥923 (≥11.6) | ≥2388(≥30) | 287-310(36-39) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 320/239 | G-40EH | 1260-1290(12.6-12.9) | ≥947 (≥11.9) | ≥2388(≥30) | 302-326(38-41) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 335/239 | G-42EH | 1290-1330(12.9-13.3) | ≥971 (≥12.2) | ≥2388(≥30) | 318-342(40-43) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 360/239 | G-45EH | 1330-1370(13.3-13.7) | ≥1003 (≥12.6) | ≥2388(≥30) | 342-366(43-46) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 380/239 | G-48EH | 1370-1400(13.7-14.0) | ≥1035 (≥13.0) | ≥2388(≥30) | 366-390(46-49) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 400/239 | G-50EH | 1400-1430 (14.0-14.3) | ≥1035 (≥13.0) | ≥2388(≥30) | 374-406(47-51) | 0.10-0.12 | 0.45-0.55 | |
| S-NdFeB 260/279 | G-33TH | 1140-1180(11.4-11.8) | ≥860 (≥10.8) | ≥2785(≥35) | 247-271(31-34) | 0.095-0.11 | 0.42-0.52 | |
| S-NdFeB 280/279 | G-35TH | 1180-1230(11.8-12.3) | ≥899 (≥11.3) | ≥2785(≥35) | 263-287(33-36) | 0.095-0.11 | 0.42-0.52 | |
| S-NdFeB 300/279 | G-38TH | 1230-1260(12.3-12.6) | ≥923(≥11.6) | ≥2785(≥35) | 287-310(36-39) | 0.095-0.11 | 0.42-0.52 | |
| S-NdFeB 320/279 | G-40TH | 1260-1290(12.6-12.9) | ≥947 (≥11.9) | ≥2785(≥35) | 302-326(38-41) | 0.095-0.11 | 0.42-0.52 | |
| S-NdFeB 335/279 | G-42TH | 1290-1330(12.9-13.3) | ≥971(≥12.2) | ≥2785(≥35) | 318-342(40-43) | 0.095-0.11 | 0.42-0.52 | |
| S-NdFeB 360/279 | G-45TH | 1330-1370(13.3-13.7) | ≥1003 (≥12.6) | ≥2706(≥34) | 342-366(43-46) | 0.095-0.11 | 0.42-0.52 | |
| S-NdFeB 430/135 | G-54H | 1440-1470 (14.4-14.7) | ≥1074 (≥13.5) | ≥1353 (≥17) | 398-422 (50-53) | 0.09-0.12 | 0.55-0.70 | |
| S-NdFeB 430/159 | G-54SH | 1440-1470 (14.4-14.7) | ≥1074 (≥13.5) | ≥1592 (≥20) | 398-422 (50-53) | 0.09-0.12 | 0.50-0.65 | |
| S-NdFeB 430/191 | G-54UH | 1430-1470 (14.3-14.7) | ≥1035 (≥13.0) | ≥1910 (≥24) | 390-422 (49-53) | 0.09-0.11 | 0.50-0.60 |
Br = residual induction · Hcb = coercivity · Hcj = intrinsic coercivity · (BH)max = max energy product · αBr/βHcj = temperature coefficients. Coefficients retain the source notation: some rows show magnitudes and others signed values. Confirm the signed coefficient and temperature interval in the selected grade datasheet before calculation.
Magnet Grade & Temperature
Balance flux, coercivity, peak temperature and irreversible-loss margin.
Review grade selectionAvailable Geometries
We produce NdFeB in standard and custom geometries — magnetization and tolerance matched to your magnetic circuit:
- ✓Discs & cylinders — axially or diametrically magnetized
- ✓Blocks & rectangles — as-sintered or ground on all faces
- ✓Rings — radial or axial, ID/OD ground for concentricity
- ✓Arcs & segments — rotor and stator segments, skewed on request
- ✓Custom shapes — machined to your drawing, including holes and notches
Machining & Dimensional Tolerances
NdFeB is hard and abrasive — tolerances drive cost. We recommend specifying tight tolerance only where functionally required:
| Process | Typical Tolerance | Notes |
|---|---|---|
| As-sintered | ±0.1 mm | Most economical; suitable for non-critical faces |
| Sliced / profile-ground | ±0.05 mm | Standard for block and arc dimensions |
| Centerless / surface ground | ±0.02 mm | For mating faces and press-fit diameters |
| Parallelism / perpendicularity | Per drawing | Confirmed during DFM review |
Coatings & Surface Protection
NdFeB corrosion protection must match the environment and assembly process. The coating figures below are published references; specify the salt-spray method, duration, specimen preparation and acceptance criterion before treating them as a part requirement:
| Coating | Thickness | Salt Spray | Best For |
|---|---|---|---|
| Ni-Cu-Ni (standard) | 15–20µm | 48h+ | General indoor use |
| Epoxy | 15–25µm | 72h+ | Humidity, marine |
| Zinc | 8–12µm | 24h+ | Cost-sensitive, dry |
| Parylene C | 10–15µm | 240h+ | Medical, extreme |
Magnetization Patterns
We magnetize in-house and verify flux on every lot:
- ✓Axial — through thickness (most common)
- ✓Diametric — through diameter (rotor applications)
- ✓Radial — inside or outside diameter (ring magnets)
- ✓Multi-pole — 2 to 60+ poles on one face (encoders, sensors)
- ✓Skewed — angled poles for cogging reduction
NdFeB Coating Selection
Compare nickel, zinc, epoxy, parylene and other protection routes.
Compare coatingsTest & Quality Documentation
What ships with your magnets — scoped per project during quotation.
Magnetic Properties
Certificate of Analysis with measured Br / Hcb / Hcj / (BH)max against the specified grade, from our demagnetization-curve test equipment.
Dimensional Inspection
Dimensional reports by gauge or CMM as agreed in the inspection plan; critical dimensions identified together during DFM review.
Compliance & Project Docs
RoHS / REACH declarations, CMRT / EMRT conflict-minerals reporting on request, and FAI / PPAP documentation per project requirements.
Inspection Plan Agreement
Specify critical characteristics, sampling and acceptance criteria so the requested records match your part and application.
Plan the quality reviewProcess reference images are separated from the product gallery. They illustrate equipment and handling topics; they do not establish ownership of a facility, a customer delivery, or project-specific inspection results.
Factory Tour
Inside NdFeB Magnets Manufacturing
Sintered neodymium production requires low-oxygen powder control, magnetic-field pressing, vacuum sintering, brittle-material machining and verified magnetic output.
4 process viewsProduct-specific manufacturing
1 inspection viewRelevant quality equipment
1 packing viewProduct-appropriate protection
End-to-end process visibilityManufacturing · inspection · packing documented in one focused route
Manufacturing processInspection & testingPacking & dispatch
Integrated Alloy & Sintering Hall
Enclosed alloy, powder and furnace systems support stable rare-earth magnet production.
Low-Oxygen Production Line
Connected process modules limit oxidation while material moves through powder and thermal stages.
Nitrogen Jet Milling
Alloy is reduced to a controlled fine powder before orientation and compaction.
Precision Wire Cutting
EDM wire cutting creates rings, arcs and complex profiles from sintered blanks.
Magnetic Field Mapping
Field distribution and magnetization angle are checked against the approved specification.
Shielded Export Packing
Finished magnets are isolated, vacuum protected and immobilized for safe transport.
Manufacturing, inspection and packing photographs for this product family.Equipment route varies by material and geometryRemote video inspection available before shipment
Frequently Asked Questions
What's the maximum operating temperature really mean?
A maximum operating temperature is a grade reference under defined magnetic-circuit and loss criteria, not a universal 5% loss threshold. Review the demagnetization curve, permeance coefficient, opposing field and exposure time for the part. Agree the acceptable irreversible loss and temperature-validation method during design review.
Have a Drawing or Specification?
Send it to our team for engineering review and quotation — grade recommendation included.