30
FLUDEX 4612 en
Operating instructions 10/2017
6.5
Possible misalignments
S
min.
S
max.
1)
3)
2)
ΔKa
ΔKw
ΔKr
S
min.
S
max.
Fig. 10:
Possible misalignments
1) Axial misalignment
2) Angular misalignment
3) Radial misalignment
Misalignments of the coupling parts in relation to each other can be caused by inaccurate alignment during
assembly, but also by actual operation of the equipment (expansion due to heat, shaft deflection,
insufficiently rigid machine frames, etc.).
WARNING
Risk of serious injury through flying fragments
Risk of serious injury through flying fragments and/or risk of damage to the coupling.
The fitting misalignment must not be beyond the permissible range. It is however recommended to align
the coupling as precisely as possible so as to have an additional margin for misalignment in operation.
6.5.1
Axial misalignment
Axial misalignment ΔKa (Fig. 10) of the coupling parts relative to one another is permissible within the
"permissible deviation" for dimension "S" (see orderrelated title page).
6.5.2
Angular misalignment
The angular misalignment ΔKw (Fig. 10) can usefully be measured as the difference in the gap dimension
(ΔS = S
max.
– S
min.
). For the permissible values for the difference in the gap dimension, refer to item 6.5.4.
If required, the permissible angular misalignment ΔKw can be calculated as follows:
D
Kw
perm.
inRad
+
D
S
perm.
d
1
ΔS
perm.
see item 6.5.4.
d
1
corresponds to N-EUPEX size in mm
D
Kw
perm.
inDegrees
+
180
p
D
S
perm.
d
1
6.5.3
Radial misalignment
For the permissible radial misalignment ΔKr
perm.
(Fig. 10) – depending on the operating speed –, refer to
item 6.5.4.
Summary of Contents for FLENDER FLUDEX FNA
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