Bearing Vibration and noise

The vibration and noise of bearings are classified as four classed as Z1,Z2,Z3 and Z4,It is measured by the instrument of S0910-1, For special requirement, It is measured by BVT-1 and classified as v1,v2,v3 and v4,The data are shown as below. Customer need mark their requirement of vibration and noise class on the order.
D(mm)
V
V1
V2
V3
V4
Low Brand
Medium Brand
High Brand
Low Brand
Medium Brand
High Brand
Low Brand
Medium Brand
High Brand
Low Brand
Medium Brand
High Brand
Low Brand
Medium Brand
High Brand
3,4
80
44
44
60
35
32
48
26
22
31
16
15
28
10
10
5,6
110
72
60
74
48
40
58
36
30
35
21
18
32
11
11
7,8,9
130
96
80
92
66
54
72
48
40
44
28
24
38
12
12
10,12
160
120
100
120
80
70
90
60
50
55
35
30
45
14
15
15
210
150
120
150
100
85
110
78
60
65
46
35
52
18
18
17
210
150
120
150
100
85
110
78
60
65
46
35
52
25
25
20
260
190
150
180
125
100
130
100
75
80
60
45
60
25
25
22,25
260
190
150
180
125
100
130
100
75
80
60
45
60
30
32
28
260
190
150
180
125
100
130
100
75
80
60
45
60
35
40
30,32
300
240
190
200
150
130
150
120
100
90
75
60
70
35
40
35
300
240
190
200
150
130
150
120
100
90
75
60
70
42
45
40
360
300
260
240
180
160
180
150
130
110
90
80
82
50
50
45
360
300
260
240
180
160
180
150
130
110
90
80
82
60
60
50
420
320
320
280
200
200
210
160
160
125
100
100
95
70
70