Beckhoff AG2250, Operating Instructions Manual

Page: 83 / 95

Mechanical installation
Version: 2.8 ─── 83 AG2250
8.3
Gear unit to machine
No washers necessary
Beckhoff recommends not using washers if the material of the
screw contact surface has an adequate interface pressure.
8.3.1
Output side
Avoid damage due to stresses
Use suitable tools for the assembly. Mount gear wheels and
toothed belt pulleys without force on the output shaft and avoid
mounting by driving or hammering on.
The gear unit can be damaged if stress occurs during mounting.
► Seal any gap over a wide area when attaching to the output side
► Make sure that the surfaces of the attached parts have a low
roughness
► Use only screw head seals and o-rings for sealing
8.3.1.1
Permissible axial forces
The table below shows the maximum permissible static axial and ra-
dial forces. The permitted forces refer to the center of the shaft:
Gear unit 040 060 080 120 160
F
a Stat
[N] 240 800 1600 3800 11000
F
r Stat
[N] 200 700 1250 2000 5000