Wittenstein Alpha LK Series, Руководство по эксплуатации

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Appendix LK
+
/LPK
+
/LPBK
+
en-20 2022-D026817 Revision: 04
9.3 Tightening torques for common thread sizes in general mechanics
The specified tightening torques for headless screws and nuts are calculated values and are based
on the following conditions:
- Calculation acc. VDI 2230 (Issue February 2003)
- Friction value for thread and contact surfaces
μ =0.10
- Exploitation of the yield stress 90 %
Gearhead
size LPK
+
Bore Ø
[mm]
Screw size /
property
class
Tightening
torque
[Nm]
050
44 M4 / 12.9 4.55
070
62 M5 / 12.9 9
090
80 M6 / 12.9 15.4
120
108 M8 / 12.9 37.3
155
140 M10 / 12.9 73.4
Tbl-15: Threaded bores in the gear unit housing LPK
+
Gearhead
size LPBK
+
Bore Ø
[mm]
For screw size
/ property
class
Tightening
torque
[Nm]
070
82 M8 / 12.9 37.3
090
106 M10 / 12.9 73.4
120
144 M12 / 12.9 126
Tbl-16: Through-holes in gearhead housing LPBK
+
Tightening torque [Nm] for threads
Property
class
Bolt / nut
M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24
8.8 / 8
1.15 2.64 5.24 8.99 21.7 42.7 73.5 118 180 258 363 493 625
10.9 / 10
1.68 3.88 7.69 13.2 31.9 62.7 108 173 265 368 516 702 890
12.9 / 12
1.97 4.55 9.00 15.4 37.3 73.4 126 203 310 431 604 821 1042
Tbl-17: Tightening torques for headless screws and nuts