Quality Control
Apart from the dimensional tolerances of length, width and height, permanent magnets have also deviations in shapes and positions..
The main deviations in block magnets are mainly warping and parallelism. And in discs and ring magnets, the deviations are cone-shapes and concentricity.
Nominal Measure |
Isotropics magnets |
Antisotropics magnets |
Over |
Until |
Perpend. dir. pressing± |
Paralel. dir. pressing ± |
Perp. dir. de pressing± |
Paralelo. dir. pressing ± |
- |
4 |
0,25 |
0,30 |
0,25 |
0,30 |
4 |
6 |
0,25 |
0,30 |
0,25 |
0,30 |
6 |
8 |
0,25 |
0,30 |
0,25 |
0,30 |
8 |
10 |
0,30 |
0,40 |
0,30 |
0,40 |
10 |
13 |
0,30 |
0,40 |
0,30 |
0,40 |
13 |
16 |
0,30 |
0,40 |
0,35 |
0,45 |
16 |
20 |
0,30 |
0,40 |
0,45 |
0,55 |
20 |
25 |
0,30 |
0,40 |
0,55 |
0,70 |
25 |
30 |
0,35 |
0,45 |
0,70 |
0,90 |
30 |
35 |
0,40 |
0,50 |
0,80 |
1,00 |
35 |
40 |
0,45 |
0,55 |
0,95 |
1,20 |
40 |
45 |
0,50 |
0,60 |
1,10 |
1,35 |
45 |
50 |
0,60 |
0,80 |
1,20 |
- |
50 |
55 |
0,70 |
0,90 |
1,30 |
- |
55 |
60 |
0,75 |
1,00 |
1,45 |
- |
60 |
70 |
0,90 |
1,10 |
1,65 |
- |
70 |
80 |
1,10 |
1,35 |
1,90 |
- |
80 |
90 |
1,25 |
1,55 |
2,15 |
- |
90 |
100 |
1,40 |
1,70 |
2,40 |
- |
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