5.
ADVANCED USE
5.1
Soft foot
Before starting the alignment it is
recommended to check the
Movable machine for soft foot.
"Soft foot" is the expression used
when a machine is not resting
equally on all feet.
To find and correct the soft foot
do as follows:
1. Tighten all bolts.
2. Execute all preparation steps
as per chapter 3.1 to 3.6.
3. Position the measuring units
in the 12 o'clock position.
4. Press
to zero the display values.
5. Press
and
and reach the 12 o'clock measuring position.
6. Press
and
7. Loosen one of the bolts and monitor the change of the displayed
values.
• If the deviation is less than 0.05 mm (2 mils), the foot has a good
support. Tighten the bolt and go to the next foot.
• If the deviation is larger than 0.05 mm (2 mils), the foot or its
diagonally opposed foot is a soft foot. Tighten the bolt and
check the diagonally opposed foot. If the deviation is larger than
the previously tightened foot, then this is the soft foot.
If not, tighten the bolt and go back to the previous diagonally
opposed foot. It is normally worthwhile to try to improve the
support of the soft foot by adding shims. Add the amount of
shims corresponding to the larger deviation measured.
36
Fig. 31. Soft foot
A Soft foot
to skip the 9 and 3 o'clock measuring steps
to reach the feet values.
Shaft Alignment Tools
TMEA 1P/2.5 / TMEA 1PEx