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BA 3102 en 02/2016
3.7
Alignment
When aligning the angular and radial misalignment should be kept as low as possible.
Misalignment values specified in table 9 are maximum permissible overall values in operation, resulting
from mispositioning through imprecision during alignment and misalignment through operation
(e.g. deformation through load, heat expansion).
Reduced misalignment in the coupling minimises expected wear on the flexible elements. Misalignment
in the coupling gives rise to restorative forces which may impose inadmissible stress on adjacent machine
parts (e.g. bearings).
3.8
Shaftdisplacement values during operation
The following maximum permissible misalignments must by no means be exceeded during
operation.
When aligning the angular and radial misalignment should be kept appreciably smaller
(tending towards zero).
Table 9:
Shaftdisplacement values ΔS
perm.
and ΔK
perm.
, maximum permissible during operation,
stated in mm (rounded)
Size
Coupling speed in 1/min
250
500
750
1000
1500
2000
3000
4000
5000
68
0.4
0.3
0.25
0.2
0.2
0.15
0.15
0.1
0.1
80
0.4
0.3
0.25
0.2
0.2
0.15
0.15
0.1
0.1
95
0.5
0.35
0.25
0.25
0.2
0.2
0.15
0.1
0.1
110
0.5
0.35
0.3
0.25
0.2
0.2
0.15
0.1
0.1
125
0.5
0.4
0.3
0.25
0.25
0.2
0.15
0.15
0.1
140
0.6
0.4
0.35
0.3
0.25
0.2
0.2
0.15
160
0.6
0.5
0.4
0.35
0.3
0.25
0.2
0.15
180
0.6
0.5
0.4
0.35
0.3
0.25
0.2
200
0.8
0.55
0.45
0.4
0.3
0.3
0.2
225
0.8
0.55
0.5
0.4
0.35
0.3
0.25
250
0.8
0.6
0.5
0.4
0.35
0.3
280
1
0.7
0.6
0.5
0.4
0.35
315
1
0.7
0.6
0.5
0.4
0.35
350
1
0.8
0.6
0.6
0.5
400
1.2
0.9
0.7
0.6
0.5
440
1.3
1
0.7
0.7
0.6
480
1.4
1
0.8
0.7
520
1.5
1.1
0.9
0.8
The numerical values of the table, as well as the intermediate values, can be calculated as follows:
ΔKr
perm.
= ΔS
perm.
= (0.1 + DA / 1000) x 40 / √n
Coupling speed "n" in 1/min
"DA" in mm, see section 1.
Radial misalignment ΔKr
perm.
in mm
For speeds < 250 1/min the values in the colon "250 1/min" in table 9 apply.
