Home TechnicalNoise Class

Noise Class
Noise Class
 
Vibration noise values of bearings are represented by vibration acceleration level (dB) and classified according to standards as Z1, Z2, Z3 and Z4.
 
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

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