The vibration and noise of bearings are classified in four classes as Z1,Z2,Z3 and Z4.It is measured by the instrument of SO910-1.For special requirement, it is measured by BVT-1 and classified as V1,V2 and V3. The data are shown in below tables. different vibration & noise requirement should be mentioned in order.  

TOLERANCE DATA FOR VIBRATION OF
SINGLE BEARING Tolerance in Um/s

d
mm

V

V 1

V 2

V 3

low

mid

high

low

mid

high

low

mid

high

low

mid

high

5
6
7
8
9
10
12
15
17
20
22
25
28
30
32
35
40

110
110
130
130
130
160
160
210
210
260
260
260
260
300
300
300
300

72
72
96
96
96
120
120
150
150
190
190
190
190
240
240
240
300

60
60
80
80
80
100
100
120
120
150
150
150
150
190
190
190
260

90
90
110
110
110
140
140
180
180
220
220
220
220
250
250
250
300

60
60
80
80
80
100
100
130
130
160
160
160
160
200
200
200
250

50
50
65
65
65
85
85
100
100
125
125
125
125
160
160
160
220

58
58
72
72
72
90
90
110
110
130
130
130
130
150
150
150
180

36
36
48
48
48
60
60
78
78
100
100
100
100
120
120
120
150

30
30
40
40
40
50
50
60
60
75
75
75
75
100
100
100
130

35
35
44
44
44
55
55
65
65
80
80
80
80
90
90
90
110

21
21
28
28
28
35
35
46
46
60
60
60
60
75
75
75
90

18
18
24
24
24
30
30
35
35
45
45
45
45
60
60
60
80

MAXIMUM VIBRATION ACCELERATION
OF SINGLEBEARING Tolerance in dB

d
mm

Diameter series(1)

Diameter series(2)

Diameter series(3)

Z

Z 1

Z 2

Z 3

Z

Z 1

Z 2

Z 3

Z 4

Z

Z 1

Z 2

Z 3

Z 4

3
4
5
6
7
8
9
10
12
15
17
20
25
30
35
40

35
35
37
37
39
39
41
43
44
45
46
47
48
49
51
53

34
34
36
36
38
38
40
42
43
44
44
45
46
47
49
51

32
32
34
34
35
35
36
38
39
40
40
41
42
43
45
46

28
28
30
30
31
31
32
33
34
35
35
36
38
39
41
42

36
36
38
38
40
40
42
44
45
46
47
48
49
50
52
54

35
35
37
37
38
38
40
42
43
44
45
46
47
48
50
52

32
32
34
34
36
36
37
39
39
41
41
42
43
44
46
47

30
30
32
32
34
34
35
35
35
36
36
38
40
41
43
44

-
-
-
-
-
-
-
30
30
31
31
33
36
37
39
40

37
37
39
39
-
-
-
46
47
48
49
50
51
52
54
56

36
36
37
37
-
-
-
44
45
46
47
48
49
50
52
54

33
33
35
35
-
-
-
40
40
42
42
43
44
45
47
49

31
31
33
33
-
-
-
37
37
38
38
39
41
42
44
45

-
-
-
-
-
-
-
32
32
33
33
34
37
38
40
41

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