Fastening Torques And Relative Preloads For Standard Connections - Benelli 2009 TREK1130 Workshop Manual

GEN
INFO
FASTENING TORQUES AND RELATIVE PRE-LOADS FOR STANDARD CONNECTIONS
The values shown in the following table refer to standard fastenings, meaning regarding the coupled metric screws with
relative nut or with metal female screw.
Furthermore, the bodies to be fastened must be made of metal or sufficiently stiff not to require bushes interpositions or
spacers.
The coupling is always with lightly oiled or greased thread; alternatively, the type of requested thread brakes paste must
be shown.
The axial pre-loads, correlated to the fastening torque, are increased by 10% compared to the calculated value, to take into
account of the tolerance on the nominal moment of the torque and of the variation that the friction coefficient can suffer
from, from fastening to fastening.
SCREWS
FASTENING
TORQUE
M4 X 0.7
M5 X 0.8
M6 X 1
M8 X 1.25
M8 X 1 (*)
M10 X 1.5
M10 X 1.25 (*)
M12 X 1.75
M12 X 1.5 (*)
M12 X 1.25 (*)
M14 X 2
M14 X 1.5 (*)
M16 X 2
M16 X 1.5 (*)
M18 X 2.5
M18 X 1.5 (*)
M20 X 2.5
M20 X 1.5 (*)
M22 X 2.5
M22 X 1.5 (*)
M24 X 3
M24 X 2 (*)
(*) The shown metric screw is fine step. (*)
2 14
CLASS 8.8
AXIAL
PRE-LOAD
[Nm] [N]
3 3.870
6 6.350
10 8.860
22 14.900
25 17.280
45 24.680
50 27.870
80 37.640
85 40.547
90 43.550
130 52.670
150 62.900
200 74.070
225 86.140
265 83.650
320 104.900
390 111.870
440 130.620
540 141.950
600 162.750
670 160.238
750 184.566
CLASS 10.9
FASTENING AXIAL
TORQUE PRE-LOAD
[Nm] [N]
4.2 5.420
7.5 7.930
13 11.520
30 20.330
36 24.890
65 35.640
70 39.013
110 51.750
120 57.250
130 62.900
185 74.800
205 85.960
280 103.690
310 118.680
370 116.790
450 147.520
550 257.770
630 187.020
750 197.150
850 230.560
950 227.203
1.050 258.392
FASTENING TORQUES
CLASS 12.9
FASTENING AXIAL
TORQUE PRE-LOAD
[Nm] [N]
5.2 6.710
9 9.520
16 14.180
40 27.100
45 31.110
80 43.870
85 47.380
135 63.510
145 69.170
150 72.580
220 88.950
245 102.780
335 124.060
360 137.820
450 142.040
550 180.300
650 186.450
750 222.650
900 236.580
1.000 271.240
1.130 270.252
1.250 307.610