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2.9. TIGHTENING TORQUES
Thread Diameter (Ø)
M4
M5
M6
M8
M10
M12
M14
M16
M18
M20
M22
M24
M27
M30
M33
M36
2.10. EXPECTED NOISE VALUES
Power of motor
(Kw)
��
��
< 0.55
0.75
1.1
1.5
2.2
3
4
5.5
7.5
11
15
18.5
22
30
37
45
55
75
90
110
132
160
(*) Without protective sound hood, measured at a distance of 1 m directly above the driven pump, in a free space above
a sound reflecting surface.
TIGHTENING TORQUES
Tightening Torque max (Nm)
Property Classes
8.8
3.0
5.9
10
25
49
85
135
210
300
425
580
730
1100
1450
1970
2530
Table 8
Sound pressure level (dB) *
Pump with motor
1450 rpm
60
60
62
63
64
65
66
67
69
70
72
73
74
75
75
76
77
78
79
80
80
80
Table 9
25
10.9
4.4
8.7
15
36
72
125
200
310
430
610
820
1050
1550
2100
2770
3560
2900 rpm
64
66
66
68
69
70
71
73
74
76
77
78
79
81
82
82
84
85
85
86
86
86
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