Y30 Ferrite magnet
Ferrite magnets with low cost and wide used in loudspeaker, magnetic separator etc...... y30,y35, c5,c8
Applications of Ceramic Magnets
- Speaker magnets
- DC brushless motors
- Magnetic Resonance Imaging (MRI)
- Magnetos used on lawnmowers and outboard motors
- DC permanent magnet motors (used in cars)
- Separators (separate ferrous material from non-ferrous)
- Used in magnetic assemblies designed for lifting, holding, retrieving and separating
Attributes of Ceramic Material
- Least expensive material compared to alnico and rare earth magnets
- High intrinsic coercive force
- Available in simple shapes only due to manufacturing process
- Lower service temperature than alnico, greater than rare earth
- Finishing requires diamond cutting or grinding wheel
- Lower energy product than alnico and rare earth magnets
- Most common grades of ceramic are 1, 5 and 8 (1-8 possible)
- Grade 8 is the strongest ceramic material available
- Tooling can be expensive
Y30 Ferrite magnet
Magnetic properties (not less)
Grade | Br, T | Hcb, kA/m | Hcm, kA/m | (BH)max, kJ/m3 |
6BI240 | 0.19 | 125 | 240 | 6.0 |
8BI220 | 0.21 | 125 | 215 | 7.0 |
22BA220 | 0.36 | 215 | 220 | 22.0 |
24BA210 | 0.37 | 205 | 210 | 24.0 |
25BA170 | 0.38 | 165 | 170 | 25.0 |
18SA220 | 0.33 | 210 | 220 | 18.0 |
27SA240 | 0.37 | 230 | 240 | 27.0 |
28SA250 | 0.39 | 240 | 250 | 28.0 |
Shapes and sizes available (as standard):
Shapes: Blocks, plates, rods/cylinders, disks, rings, arc of segments.
Two poles
Standard sizes:
Blocks/plates
| Min, mm | Max, mm |
W | 5 | 100 |
T | 5 | 16 |
L | 5 | 120 |
Rods/Cylinders
Disks
Rings (isotropic)
| Min, mm | Max, mm |
OD | 5 | 45 |
ID | 3 | 30 |
h | 2 | 25 |
Rings (anisotropic)
| Min, mm | Max, mm |
OD | 36 | 135 |
ID | 18 | 60 |
h | 6 | 20 |
Arcs/segments (anisotropic)
| Min, mm | Max, mm |
W | 10 | 80 |
L | 10 | 140 |
H | 3 | 45 |