Segment Neodymium N30SH R20,25xr17,75x40mm Phosphated
Artno: 45-0217-00
In stock
| Magnet properties | |
|---|---|
| Magnet type | Segment |
| Material | Neodymium |
| Coating | Phosphated |
| Magn. direction | Diametral |
| Outer R [mm] | 20.25 |
| Inner r [mm] | 17.75 |
| Thickness [mm] | 40 |
| Magnet data | |
| Energy grade | N30SH |
| Temp. grade | SH |
| Max temp. [°C] | 150 |
| Remanence Br [kGauss] | 10.8 - 11.2 |
| Remanence Br [Tesla] | 1.08 - 1.12 |
| Coercivity HcB [kOe / kA/m] | 10.1 / ≥804 |
| Coercivity HcJ [kOe / kA/m] | 20 / ≥1592 |
| Energy product (BH)max [kJ/m3 / MGOe] | 223 - 243 / 28 - 32 |
Description
This segment will be magnetized to customer wish, either North pole on outer (20,25) or inner radius (17,75)
NOTE! The magnet has a phosphated surface, this means that the magnet is not surface treated and corrodes quickly. Therefore, it is important that the magnet is well protected and sealed during application!
This is a rare treatment and is done where the magnet is in e.g. lubrication/oily systems, where oil dissolves other surface treatments (e.g. motor/pump). The oil then protects the magnet against corrosion. The magnet must be kept in vacuum throughout the process from fabrication to assembly to be insulated against oxygen.
See Magnetfacts for more information about coatings.
