SmCo Ring Magnets
- Standard Size Range: D=1.5-130mm, Inner D=0.4-80mm, H=0.3-120mm
- Maximum Ring Dimensions: Outer D130mm (Inner D80mm×H60mm), Outer D80mm (Inner D50mm×H120mm)
- Minimum Ring Dimensions: Outer D1.5mm (Inner D0.4mm×H0.3mm)
Note: For ring shapes, achieving a large outer diameter with an extremely small height or wall thickness can be challenging due to the inherent brittleness of SmCo, which can result in breakage during assembly. For any special requirements or to gain further details, you can reach out to our technical or sales team for guidance.
| Ring | |
| D | 1.2-100mm |
| d | 0.3-80mm |
| T | 0.3-60mm |
| Part Number | ØD(inch/mm) | Ød(inch/mm) | T(inch/mm) |
| 12.21.280.00H1 | 0.165 / 4.2 | 0.055 / 1.4 | 0.232 / 5.9 |
| 12.21.280.00H2 | 0.243 / 6.172 | 0.059 / 1.498 | 0.098 / 2.489 |
| 12.21.280.00H3 | 0.3 / 7.62 | 0.128 / 3.251 | 0.125 / 3.175 |
| 12.21.280.00H4 | 0.342 / 8.7 | 0.149 / 3.8 | 0.748 / 19 |
| 12.21.280.00H5 | 0.355 / 9.017 | 0.062 / 1.574 | 0.05 / 1.27 |
| 12.21.280.00H6 | 0.393 / 10 | 0.275 / 7 | 0.118 / 3 |
| 12.21.280.00H7 | 0.452 / 11.5 | 0.255 / 6.5 | 0.126 / 3.2 |
| 12.21.280.00H8 | 0.472 / 12 | 0.314 / 8 | 1.377 / 35 |
| 12.21.280.00H9 | 0.5 / 12.7 | 0.13 / 3.302 | 0.187 / 4.749 |
| 12.21.280.00H10 | 0.625 / 15.875 | 0.39 / 9.90 | 0.187 / 4.749 |
| 12.21.280.00H11 | 0.653 / 16.586 | 0.34 / 8.63 | 0.25 / 6.35 |
| 12.21.280.00H12 | 0.68 / 17.272 | 0.25 / 6.35 | 0.4 / 10.16 |
| 12.21.280.00H13 | 0.7 / 17.78 | 0.2 / 5.08 | 0.5 / 12.7 |
| 12.21.280.00H14 | 0.75 / 19.05 | 0.5 / 12.7 | 0.312 / 7.924 |
| 12.21.280.00H15 | 0.8 / 20.32 | 0.196 / 5 | 1.417 / 36 |
| 12.21.280.00H16 | 0.91 / 23.114 | 0.27 / 6.858 | 1.629 / 41.376 |
| 12.21.280.00H17 | 1 / 25.4 | 0.206 / 5.232 | 0.5 / 12.7 |
| 12.21.280.00H18 | 1.205 / 30.607 | 0.99 / 25.146 | 0.1 / 2.54 |
| 12.21.280.00H19 | 1.259 / 32 | 0.787 / 20 | 0.059 / 1.5 |
| 12.21.280.00H20 | 1.622 / 41.211 | 0.28 / 7.112 | 1.7475 / 44.386 |
| 12.21.280.00H21 | 1.905 / 48.4 | 1.33 / 34 | 3.425 / 87 |
| 12.21.280.00H22 | 2.20 / 56 | 0.196 / 5 | 0.393 / 10 |
| 12.21.280.00H23 | 2.475 / 62.865 | 0.95 / 24.13 | 0.3 / 7.62 |
| 12.21.280.00H24 | 2.527 / 64.2 | 1.141 / 29 | 0.629 / 16 |
| 12.21.280.00H25 | 2.767 / 70.3 | 0.472 / 12 | 1.87 / 47.5 |
| 12.21.280.00H26 | 2.834 / 72 | 1.22 / 31 | 0.228 / 5.8 |
| 12.21.280.00H27 | 3.015/ 76.6 | 2.622 / 66.6 | 0.094 / 2.4 |
| 12.21.280.00H28 | 3.18 / 80.772 | 0.751 / 19.075 | 2.4335 / 61.810 |
| 12.21.280.00H29 | 3.228 / 82 | 0.472 / 12 | 2.007 / 51 |
| 12.21.280.00H30 | 3.74/ 95 | 1.899 / 48.24 | 1.102 / 28 |
The displayed SmCo ring magnets symbolize only a fraction of our vast selection of standard high-temperature ring magnets. If the dimensions you require aren't listed, please get in touch with us directly with your requirements. NGYC is dedicated to designing, engineering, and providing custom SmCo magnets to cater to your specific needs.
Consisted of samarium and cobalt with an atomic ratio of 1:5
| Item | Unit | SmCo5 Magnet |
| Density (D) | G/Cm3 | 8.3 |
| Curie Temperature (Tc) | K | 1000 |
| Vickers Hardness (Hv) | MPa | 450-500 |
| Compressive Strength (δc) | MPa | 1000 |
| Resistivity (ρ) | Ω.Cm | 5～6×10-5 |
| Bending Strength (δb) | Mpa | 150-180 |
| Tensile Strength (δt) | Mpa | 40 |
| Coeff. of Thermal Expansion (α) | (10-6/℃) | ∥ 6 ⊥12 |
Consisted of samarium and cobalt with an atomic ratio of 2:17
| Item | Unit | Sm2Co17 Magnet |
| Density (D) | G/Cm3 | 8.4 |
| Curie Temperature (Tc) | K | 1100 |
| Vickers Hardness (Hv) | MPa | 550-600 |
| Compressive Strength (δc) | MPa | 800 |
| Resistivity (ρ) | Ω.Cm | 8～9×10-5 |
| Bending Strength (δb) | Mpa | 130-150 |
| Tensile Strength (δt) | Mpa | 35 |
| Coeff. of Thermal Expansion (α) | (10-6/℃) | ∥ 8 ⊥11 |
Please note that the above values are for reference purposes only and should not be used as the sole basis for material acceptance or rejection.
