Beckhoff AG2400, Operating Instructions Manual

Page: 73 / 91

Mechanical installation
Version: 2.1 ─── 73 AG2400
Do not use compressed air and do not spray inside the gear
unit
Use a cloth for cleaning. Spray only the cloth with cleaning agent
and carefully clean the clamping hub.
Compressed air can damage the seals of the gear unit and clean-
ing agent directly sprayed inside can affect the coefficient of friction
of the clamping hub.
Leaks on gear units with grease lubrication
Seal the surfaces of the adapter plates, the drive housing and the
motor with a surface sealing adhesive.
Leaks may occur on the drive with gear units with grease lubrica-
tion. This so-called sweating can negatively affect the lifecycle of
the gear unit.
8.1
General tightening
torques
8.1
8.1.1
Steel
The specified tightening torques for nuts and bolts are mathematical
values based on the following requirements:
• Calculation according to VDI 2230 (February 2003 edition)
• Friction coefficient for threads and contact surfaces µ = 0.10
• Elastic limit utilization 90%
• Torque tools type II classes A and D according to ISO 6789
The setting values are rounded to conventional scalings or adjust-
ment possibilities:
Screw size Quality of the screws
8.8 10.9 12.9
Tightening torque in Nm
M3 1.15 1.68 1.97
M4 2.64 3.88 4.55
M5 5.2 7.6 9
M6 9 13.2 15.4
M8 21.5 32 37.5
M10 42.5 62.5 73.5
M12 73.5 108 126
M14 118 173 202
M16 180 264 310
M18 258 368 430
M20 362 520 605
M22 495 700 820
M24 625 890 1040