Hefei Super Electronics Co., Ltd.
What Are You Looking For?
Small ring neodymium magnet with diameter magnetization designed for applications requiring compact size, strong magnetic force, and precise magnetic orientation.
Size :
OD8 - ID3x2mmColor :
SilverOrder(MOQ) :
100pcsSample :
FreeLead Time :
10-15daysPayment :
Paypal/TT/Credit CardWholesale Diameter Magnetized Small Ring Sintered NdFeB Magnets
Product Description

Dimensions: OD8 - ID3x2mm
Shape: Ring
Tolerances: ±0.05mm
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Diameter
Warning:
Keep away from pacemakers.
Always practice safe handling and keep away from children at all times.
1. Featuring an 8mm outer diameter, 3mm inner hole, and 2mm thickness, this neodymium ring magnet offers a compact structure ideal for precision devices, sensors, models, DIY projects, and electronic applications where space is limited.
2. Made from high quality sintered neodymium iron boron magnetic material, this ring magnet provides excellent magnetic strength, high energy density, and reliable performance for industrial and commercial applications.
3. The smooth nickel coating provides excellent corrosion resistance and wear protection, helping the ring strong neodymium magnet maintain a clean appearance and stable magnetic performance during long-term use.
4. Designed with radial magnetization through the diameter direction, this donut shaped neodymium magnet delivers a clear north and south pole arrangement, making it easy to install in mechanical assemblies, magnetic couplings, and automation equipment.

Customization
We have over 20 years experience of supplying Neodymium Magnets, supply a wide range of customized neodymium magnets according to requests.

| Neodymium | Br | Hcb | Hcj | (Bh)max | Tw | ||||
| Grade | mT | kGs | kA/m | kOe | kA/m | kOe | kJ/m3 | MGOe | ℃ |
| N35 | 1170-1220 | 11.7-12.2 | >868 | >10.9 | >955 | >12 | 263-287 | 33-36 | <80 |
| N38 | 1220-1250 | 12.2-12.5 | >899 | >11.3 | >955 | >12 | 287-310 | 38-39 | <80 |
| N40 | 1250-1280 | 12.5-12.8 | >907 | >11.4 | >955 | >12 | 302-326 | 38-41 | <80 |
| N42 | 1280-1320 | 12.8-13.2 | >915 | >11.5 | >955 | >12 | 318-342 | 40-43 | <80 |
| N45 | 1330-1370 | 13.3-13.7 | >915 | >11.5 | >955 | >12 | 342-367 | 41-44 | <80 |
| N48 | 1380-1420 | 13.8-14.2 | >923 | >11.6 | >955 | >12 | 366-390 | 46-49 | <80 |
| N50 | 1400-1450 | 14.0-14.5 | >796 | >10 | >876 | >11 | 382-406 | 48-49 | <80 |
| N52 | 1430-1480 | 14.3-14.8 | >796 | >10 | >876 | >11 | 398-422 | 50-53 | <80 |
| 35M | 1170-1220 | 11.7-12.2 | >868 | >10.9 | >1114 | >14 | 263-297 | 33-36 | <100 |
| 38M | 1220-1250 | 12.2-12.5 | >899 | >11.3 | >1114 | >14 | 297-310 | 36-39 | <100 |
| 40M | 1250-1280 | 12.5-12.8 | >923 | >11.6 | >1114 | >14 | 302-326 | 38-41 | <100 |
| 42M | 1280-1320 | 12.8-13.2 | >955 | >12 | >1114 | >14 | 318-342 | 40-43 | <100 |
| 48M | 1360-1430 | 13.6-14.3 | >1027 | >12.9 | >1114 | >14 | 366-390 | 46-49 | <100 |
| 50M | 1400-1450 | 14.0-14.5 | >1033 | >13 | >1114 | >14 | 382-406 | 48-51 | <100 |
| 33H | 1130-1170 | 11.3-11.7 | >836 | >10.5 | >1353 | >17 | 247-271 | 31-34 | <120 |
| 35H | 1170-1220 | 11.7-12.2 | >868 | >10.9 | >1353 | >17 | 263-287 | 33-36 | <120 |
| 38H | 1220-1250 | 12.2-12.5 | >899 | >11.3 | >1353 | >17 | 287-310 | 36-39 | <120 |
| 40H | 1250-1280 | 12.5-12.8 | >923 | >11.6 | >1353 | >17 | 302-326 | 38-41 | <120 |
| 42H | 1280-1320 | 12.8-13.2 | >955 | >12 | >1353 | >17 | 318-342 | 40-43 | <120 |
| 45H | 1300-1360 | 13-13.6 | >963 | >12.1 | >1353 | >17 | 326-358 | 43-46 | <120 |
| 48H | 1370-1430 | 13.7-14.3 | >995 | >12 | >1353 | >17 | 366-390 | 46-49 | <120 |
| 30SH | 1080-1130 | 10.8-11.3 | >804 | >10.1 | >1592 | >20 | 223-247 | 28-31 | <150 |
| 33SH | 1130-1170 | 10.3-11.7 | >844 | >10.6 | >1592 | >20 | 247-271 | 31-34 | <150 |
| 35SH | 1170-1220 | 11.7-12.2 | >876 | >11 | >1592 | >20 | 263-287 | 33-36 | <150 |
| 38SH | 1220-1250 | 12.2-12.5 | >907 | >11.4 | >1592 | >20 | 287-310 | 36-39 | <150 |
| 40SH | 1240-1280 | 12.5-12.8 | >939 | >11.8 | >1592 | >20 | 302-326 | 36-41 | <150 |
| 42SH | 1280-1320 | 12.8-13.2 | >987 | >12.4 | >1592 | >20 | 318-342 | 40-43 | <150 |
| 45SH | 1320-1380 | 13.2-13.8 | >1003 | >12.6 | >1592 | >20 | 342-366 | 43-46 | <150 |
| 28UH | 1020-1080 | 10.2-10.8 | >764 | >9.6 | >1990 | >25 | 207-231 | 26-29 | <180 |
| 30UH | 1080-1130 | 10.8-11.3 | >812 | >10.2 | >1990 | >25 | 223-247 | 28-31 | <180 |
| 33UH | 1130-1170 | 11.3-11.7 | >852 | >10.7 | >1990 | >25 | 247-271 | 31-36 | <180 |
| 35UH | 1170-1220 | 11.8-12.2 | >860 | >10.8 | >1990 | >25 | 263-287 | 33-36 | <180 |
| 38UH | 1220-1250 | 12.2-12.5 | >876 | >11 | >1990 | >25 | 287-310 | 36-39 | <180 |
| 40UH | 1250-1280 | 12.5-12.8 | >899 | >11.3 | >1990 | >25 | 302-326 | 31-41 | <180 |
| 28EH | 1040-1090 | 10.4-10.9 | >780 | >9.8 | >2388 | >30 | 207-231 | 26-29 | <200 |
| 30EH | 1080-1130 | 10.8-11.3 | >812 | >10.2 | >2388 | >30 | 223-247 | 28-31 | <200 |
| 33EH | 1130-1170 | 11.3-11.7 | >836 | >10.5 | >2388 | >30 | 247-271 | 31-36 | <200 |
| 35EH | 1170-1220 | 11.7-12.2 | >876 | >11 | >2388 | >30 | 263-287 | 33-36 | <200 |
| 38EH | 1220-1250 | 12.2-12.5 | >899 | >11.3 | >2388 | >30 | 287-310 | 36-39 | <200 |
| 28AH | 1040-1090 | 10.4-10.9 | >787 | >9.9 | >2642 | >33 | 207-231 | 26-29 | <230 |
| 30AH | 1080-1130 | 10.8-11.3 | >819 | >10.3 | >2642 | >33 | 223-247 | 28-31 | <230 |
| 38AH | 1130-1170 | 11.3-11.7 | >843 | >10.6 | >2642 | >33 | 247-271 | 31-34 | <230 |


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