Noise Class |
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Vibration noise values of bearings are represented by vibration acceleration level (dB) and classified according to standards as Z1, Z2, Z3 and Z4. |
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Single bearing vibration acceleration level (dB) standards |
Bore Diameter(mm) |
Diameter series(0)(1) |
Diameter series(2) |
Diameter series(3) |
Axial load N |
Zi |
Z2 |
Z3 |
Zi |
Z2 |
Zs |
Z4 |
Zi |
Z2 |
Z3 |
Z4 |
3 |
34 |
32 |
28 |
35 |
32 |
30 |
- |
36 |
33 |
31 |
- |
30 |
4 |
34 |
32 |
28 |
35 |
32 |
30 |
- |
36 |
33 |
31 |
- |
5 |
36 |
34 |
30 |
37 |
34 |
32 |
- |
37 |
35 |
33 |
- |
6 |
36 |
34 |
30 |
37 |
34 |
32 |
- |
37 |
35 |
33 |
- |
7 |
38 |
35 |
31 |
38 |
36 |
34 |
- |
- |
- |
- |
- |
40 |
8 |
38 |
35 |
31 |
38 |
36 |
34 |
- |
- |
- |
- |
- |
9 |
40 |
36 |
32 |
40 |
37 |
35 |
- |
- |
- |
- |
- |
10 |
42 |
38 |
33 |
42 |
39 |
35 |
30 |
44 |
40 |
37 |
32 |
12 |
43 |
39 |
34 |
43 |
39 |
35 |
30 |
45 |
40 |
37 |
32 |
15 |
44 |
40 |
35 |
44 |
41 |
36 |
31 |
46 |
42 |
38 |
33 |
17 |
44 |
40 |
35 |
45 |
41 |
36 |
31 |
47 |
42 |
38 |
33 |
20 |
45 |
41 |
36 |
46 |
42 |
38 |
33 |
48 |
43 |
39 |
34 |
25 |
46 |
42 |
38 |
47 |
43 |
40 |
36 |
49 |
44 |
41 |
37 |
80 |
30 |
47 |
43 |
39 |
48 |
44 |
41 |
37 |
50 |
45 |
42 |
38 | | |