Installation and electrical connection
en
Installation and operating instructions Wilo NL-HE
21
Sleeve size
Max.
RPM
G
1
(ref)
EPDM Allowable Misalignment
Parallel
Angular
in
mm
in
mm
in
mm
10
3600
4.1
103
0.025
0.64
0.128
3.21
11
3600
4.9
124
0.032
0.81
0.151
3.89
Table 4:
Maximum RPM and Allowable Misalignment for EPDM couplings
NOTICE
Hytrel sleeves should not be used as replacements for EPDM sleeves. When using a VFD
with a centrifugal pump, reduce allowable parallel and angular alignment values by half.
Alignment for flexible jaw couplings
Lmax.
= L + ∆K
a
∆K
w [mm] = Lmax.
- Lmin.
L
E
∆K
a
E
∆K
r
∆K
w
Lmax.
Lmin.
Axial displacement
∆K
a
Radial displacement
∆K
r
Angular displacement
∆K
w [degree]
Fig. 12:
Jaw coupling alignment
ROTEX
©
Size
14
19
24
28
38
42
48
55
65
75
90
100
110
125
140
160
180
Max. axial misalignment
>
K
a
[in]
-0.2
+0.04
-0.02
+0.05
-0,02
+0.06
-0.03
+0.07
-0.04
+0.08
-0.04
+0.08
-0.04
+0.09
-0.04
+0.10
-0.06
+0.10
-0.06
+0.12
-0.06
+0.13
-0.06
+0.15
-0.08
+0.17
-0.08
+0.18
-0.08
+0.20
-0.10
+0.22
0.12
+0.25
Max. parallel misalignment with n = 1,800 rpm
>
K
r
[in]
0.006
0.007
0.008
0.009
0.010
0.011
0.013
0.014
0.015
0.017
0.018
0.019
0.020 0.021
0.022
0.022
0.024
Max. angular misalignment with n = 1,800 rpm
>
K
w
[degree]
1.1
1.0
0.8
0.9
0.9
1.0
1.1
1.1
1.1
1.1
1.2
1.2
1.2
1.2
1.2
1.2
1.2
Max. angular misalignment with n = 1,800 rpm
>
K
w
[in]
0.024
0.029
0.031
0.039
0.051
0.067
0.079
0.090
0.102
0.126
0.161
0.181
0.213 0.248
0.256
0.303
0.354
Table 5:
Allowable Misalignment for flexible jaw couplings
