McConnel SR460 - Torque Settings; Nuts & Bolts

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5.9 Torque Settings
5.9.1 Nuts & Bolts
Specific Fastener Requirements
On SR460/620/820 machines, there are some special fasteners/components which require specific torque
settings to ensure they operate safely.
Use Machine Size Grade
Torq
u
e S
etting
Nm
Ft
-
lb
Rotor Gearbox Bolts All M20 8.8 255 188
Splitter Gearbox Bolts All M16 8.8 500 368
Axle Clamps
SR460/620 M16 8.8 280 206
SR820 M24 8.8 750 553
Blade Bolts All M24 8.8 540-800 398-590
Axle Bolts All M24 12.9 1500 1106
Wheel Nuts All 270 199
Table 5.21 – SR460/620/820 Specific Fastener Torque Settings
Non-specific Fastener Requirements
The below tables give reference to the maximum recommended tightening torques for standard zinc plated
finished bolts on McConnel machines. These settings can be applied to hex, socket countersunk and
socket button screws.
Size
Grade
8.8
10.9
12.9
Nm
Ft
-
lb
Nm
F
t
-
lb
Nm
Ft
-
lb
M5 5 3 7 5 8 6
M6 14 10 12 9 14 10
M8 34 25 29 21 34 25
M10 68 50 57 42 68 50
M12 119 88 99 73 119 88
M14 189 139 158 116 189 139
M16 295 218 246 181 295 218
M18 406 299 338 249 406 299
M20 576 424 480 354 576 424
M22 783 577 652 481 783 577
M24 995 734 829 612 995 734
M30 1977 1458 1647 1215 1977 1458
Table 5.22 – Standard Fastener Torque Settings