Wilo Yonos GIGA-N 80 Installation And Operating Instructions Manual page 25

1. Axial displacement (ΔKa)
2. Angular displacement (ΔKw)
3. Radial displacement (ΔKr)
Fig. 19: Checking the radial alignment with a
comparator
Installation and operating instructions Wilo-Yonos GIGA-N
Installation and electrical connection
ƒ
Adjust the gap ΔKa within the permissible range of deviation.
Permissible deviations for dimensions S and S2, see table "Permissible gaps S and
S2"
The angular displacement ΔKw can be measured as the difference between the gaps:
ΔS = S – S and/or ΔS2 = S2
max. min.
The following condition must be met:
ΔS and/or ΔS2 ≤ ΔS (perm. = permissible; ΔS
perm.
If required, the permissible angular displacement ΔKw can be calculated as follows:
ΔKW in RAD = ΔS /DA
perm. perm.
ΔKW in GRD = (ΔS /DA) x (180/π)
perm. perm.
(with ΔS in mm, DA in mm)
perm.
The permissible radial displacement ΔKr
missible shaft displacement". Radial displacement is dependent on the speed. The nu-
merical values in the table and their interim values can be calculated as follows:
ΔKr = ΔS = (0.1+DA/1000) x 40/√n
perm. perm.
(with speed n in rpm, DA in mm, radial displacement ΔKr
Coupling size DA [mm]
68
68
80
80
95
95
110
110
125
125
140
140
160
160
180
180
200
200
("S" for couplings with a spacer and "S2" for couplings with a spacer)
Table 4: Permissible gaps S and S2
Coupling size ΔS and ΔKr
perm.
1500 rpm
0.20
68
0.20
80
0.20
95
0.20
110
0.25
125
0.25
140
0.30
160
0.30
180
0.30
200
Permissible shaft displacement ΔS
Table 5: Maximum permissible shaft displacement ΔS
Checking the radial alignment
ƒ
Firmly clamp a dial gauge to one of the couplings or to the shaft. The piston of the
dial gauge must lie against the crown of the other half-coupling.
ƒ
Set the dial gauge to zero.
ƒ
Turn the coupling and write down the measuring result after every quarter turn.
ƒ
Alternatively, the radial coupling alignment can also be checked with a ruler.
– S2
max. min.
is dependent on the speed)
perm.
can be taken from the table "Maximum per-
perm.
in mm)
perm.
S [mm]
2 ... 4
2 ... 4
2 ... 4
2 ... 4
2 ... 4
2 ... 4
2 ... 6
2 ... 6
2 ... 6
[mm]; speed dependent
perm.
1800 rpm 3000 rpm
0.20 0.15
0.20 0.15
0.20 0.15
0.20 0.15
0.20 0.15
0.25 0.20
0.25 0.20
0.25 0.20
0.30 0.20
and ΔKr in mm (during operation, rounded)
perm. perm.
and ΔKr
perm.
en
S2 [mm]
5
5
5
5
5
5
6
6
6
3600 rpm
0.15
0.15
0.15
0.15
0.15
0.15
0.20
0.20
0.20
perm.
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