ShapeCountersunk
NdFeB Countersunk Magnets
Neodymium magnets with screw holes for fixtures, display hardware, assemblies, and mounting applications.
Rare Earth Magnets / 稀土磁铁
Strong NdFeB magnets by model, shape, and application.
按型号、形状和应用场景供应高磁力钕铁硼磁铁。
For buyers sourcing compact, high-force neodymium magnets, CIYI supports standard products and custom rare earth magnet requests.
CIYI manufacturing background: 20+ years of magnet product manufacturing history, three companies, two factories, and integrated design, development, production, and sales support.CIYI拥有20多年品牌历史，旗下3家公司、2家工厂，提供工艺设计、开发、生产和销售一体化支持。
Blocks 方块Cubes 立方Balls 磁球Countersunk 沉孔
Shape Categories / 形状分类
NdFeB magnets organized by product shape.
按形状浏览钕铁硼磁铁产品。
Provide shape, grade, coating, magnetization direction, pull force target, quantity, and packaging request for accurate quotation.提供形状、牌号、涂层、充磁方向、拉力目标、数量和包装需求，可获得更准确报价。
ShapeBlock
NdFeB Block / Cube Magnets
Square, cube, bar, and rectangular neodymium magnets for compact high-force products and OEM assemblies.
ShapeDisc
NdFeB Disc / Cylinder Magnets
Round disc, cylinder, and rod neodymium magnets for holding, electronics, packaging, and industrial parts.
ShapeArc
NdFeB Arc Magnets
Curved and segment rare earth magnets for motors, magnetic assemblies, special fixtures, and custom shape requests.
ShapeBall
NdFeB Magnetic Balls and Toy Sets
Magnetic balls, cube packs, and creative sets for education, gifts, retail packs, and private-label B2B orders.
Magnetic Grade Table
NdFeB magnet grade reference.
Typical magnetic ranges for neodymium magnet sourcing. Temperature series, coating, tolerance, and magnetization direction should be confirmed before quotation.
| Material grade | Br T / kG | Hcb kA/m / kOe | Hcj kA/m / kOe | BHmax kJ/m3 / MGOe | Standard max temp | Typical use |
|---|---|---|---|---|---|---|
| N35 | 1.17-1.22 / 11.7-12.2 | >= 868 / >= 10.9 | >= 955 / >= 12.0 | 263-287 / 33-36 | 80 C | General blocks, discs, toys, and compact assemblies |
| N38 | 1.22-1.25 / 12.2-12.5 | >= 899 / >= 11.3 | >= 955 / >= 12.0 | 287-310 / 36-39 | 80 C | Higher pull-force retail packs and industrial parts |
| N40 | 1.25-1.28 / 12.5-12.8 | >= 907 / >= 11.4 | >= 955 / >= 12.0 | 302-326 / 38-41 | 80 C | Common OEM blocks, cylinders, and magnetic holders |
| N42 | 1.28-1.32 / 12.8-13.2 | >= 915 / >= 11.5 | >= 955 / >= 12.0 | 318-342 / 40-43 | 80 C | Compact high-force products and custom assemblies |
| N45 | 1.32-1.38 / 13.2-13.8 | >= 923 / >= 11.6 | >= 955 / >= 12.0 | 342-366 / 43-46 | 80 C | Premium disc, block, cube, and holding products |
| N48 | 1.38-1.42 / 13.8-14.2 | >= 923 / >= 11.6 | >= 955 / >= 12.0 | 366-390 / 46-49 | 80 C | High performance small-size magnet designs |
| N50 | 1.40-1.45 / 14.0-14.5 | >= 796 / >= 10.0 | >= 876 / >= 11.0 | 382-406 / 48-51 | 80 C | High-energy compact products with controlled temperature |
| N52 | 1.43-1.48 / 14.3-14.8 | >= 796 / >= 10.0 | >= 876 / >= 11.0 | 398-422 / 50-53 | 80 C | Maximum-strength small magnets and premium assemblies |
| Temperature series | Hcj minimum | Max operating temp | Common grades | Selection note |
|---|---|---|---|---|
| N | >= 955 kA/m / 12 kOe | 80 C | N35-N52 | Standard room-temperature magnets and general B2B products |
| M | >= 1114 kA/m / 14 kOe | 100 C | N35M-N50M | Better demagnetization resistance for moderate heat |
| H | >= 1353 kA/m / 17 kOe | 120 C | N35H-N48H | Motors, sensors, and assemblies with higher thermal load |
| SH | >= 1592 kA/m / 20 kOe | 150 C | N30SH-N45SH | High-temperature motor and industrial assembly use |
| UH | >= 1989 kA/m / 25 kOe | 180 C | N28UH-N40UH | Demanding heat and demagnetization-resistant applications |
| EH | >= 2387 kA/m / 30 kOe | 200 C | N28EH-N38EH | Special industrial products requiring very high coercivity |
| VH / AH | >= 2785 kA/m / 35 kOe | 230 C | N28VH-N35VH / AH series by request | Highest temperature class; confirm feasibility by drawing and quantity |