Siemens 1FT6 13 Instructions Manual page 17

- In the case of a vertical installation with the shaft end at the top, ensure that no fluid can
penetrate into the upper bearing. Attach splash protection if necessary.
- If the lifting eye-bolts have been screwed in, they can be removed after the motor has
been installed.
- Turn the output elements by hand. If grinding noises occur, eliminate the cause or
contact the manufacturer.
Emitted vibrations
Emitted vibrations response of the system is affected by the output elements, the mounting
conditions, the alignment, the installation and the effects of external vibrations. This may
cause a modification of the motor vibration values.
For the motor to work perfectly and the bearings to have a long service life, then, in the fitted
state, the emitted vibrations must not exceed the following values:
Vibration frequency
< 6,3 Hz
6,3 - 63 Hz
> 63 Hz
If necessary, the rotor, together with the drive element, must be completely balanced.
Balancing
As standard, motors with a keyway are dynamically balanced by the manufacturer with a half
key.
Take note of the information indicating the type of balancing on the rating plate!
- H = balancing with half key
- F = balancing with full key
The balancing method is only identified if a keyway is present. When the output
element is assembled, be careful to use the correct balancing method for the
motor rotor.
When balancing with a half key, uneven running may occur in output elements in which the
relation of the hub length l to the shaft length l
A re-balancing procedure may be necessary. For example, the part of the key (B) protruding
out of the output element and over the contour of the shaft may have to be cut off.
Siemens AG
ENGLISH
Vibration values
Vibration amplitude s < 0,16 mm
Vibration speed v
Vibration acceleration a < 2,55 m/s²
NOTICE
< 0,8, and in which speeds are > 1500 rpm.
w
610.43 600.21
< 4,5 mm/s
eff
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