FLENDER N-EUPEX DK, Руководство по сборке и эксплуатации

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Assembly
5.3 Aligning the coupling
M3105-02en Edition 09/2022 35
5.3 Aligning the coupling
5.3 Aligning the coupling
5.3.1 Purpose of alignment
5.3 Aligning the coupling
The shafts that are joined by the coupling are never on an ideal precise axis but have a cer-
tain amount of misalignment.
Misalignment in the coupling leads to restoring forces that can stress adjacent machine parts
(e.g. the bearings) to an unacceptable extent.
The misalignment values in operation result from the following:
• Misalignment due to assembly
Incorrect position due to a lack of precision when aligning
• Misalignment due to operation
Example: Load-related deformation, thermal expansion
You can minimise misalignment by aligning after assembly. A lower misalignment in the
coupling has the following advantages:
• Reduced wear of the elastomer components
• Reduced restoring forces
• Misalignment reserves for operation of the coupling
You can find the maximum permitted shaft misalignment values during operation in section
Shaft misalignment values during operation (Page 61).
5.3.2 Possible misalignment
5.3 Aligning the coupling
DK type
The following types of misalignment can occur:
4
NBY
-
NBY
4
NJO
-
NJO
ࢉ,
X
ࢉ,
X
ࢉ,
S
Figure 5-6: Possible misalignment of DK type
① Axial misalignment (ΔKa)
② Angular misalignment (ΔKw)
③ Radial misalignment (ΔKr)