6.16 Bolt Tightening Torques - XCMG XE17U Instruction Manual

6.16 Bolt Tightening Torques

Notice!
Size of socket wrench
Bolt
specification
M8
M10
M12
M14
M16
M18
M20
M22
M24
M27
M30
M36
Note: the desired tightening torque is expressed in Nm.
For example, in case of tightening the bolt or nut with a 1m long wrench, turn the tail end of wrench by a
force of 120N, and create the following torques:
1m X120 N=120 Nm
In case of creating the same torque with a 0.25m wrench:
0.25m× =120Nm
The desired force shall be: 120 /0.25=480 N
09.2020
– Check the tightening torques of bolt and nut every 250 hours.
– After the first 50 hour breaking-in period of machine, check the tightness
of bolt and nut, and then check it every 250 hours. If loose, tighten the
bolt up to the torque shown in Tightening of Bolt. In case of replacement,
replace it with the same or higher-class bolt and nut. For the bolt and nut
outside Tightening of Bolt, refer to "Tightening Torques".
– Important: check or tighten the bolt and nut with a torque wrench.
Size of inner hexagonal
Mm
13
16
18
21
24
27
30
34
36
41
46
55
wrench mm
6
8
10
12
14
17
19
22
27
Torque Nm
10.9 class 8.8 class
30
70
120
195 140
300 210
410 300
600 400
800 550
1000 700
1500 1050
1850 1450
3000 2450
Seite 166 / 197
20
50
90