Replacement Of Wearing Parts; Demounting The Coupling Parts In Case Of Shaft­hub Connection With Parallel Key - Siemens FLENDER N-EUPEX D Operating Instructions Manual

Table 11: Wear mark for the torsional backlash, types D, E and M
Size 68
Wear mark
ΔS 5.5
V
(mm)
If the above specified maintenance instructions are not adhered to, a correct operation
within the meaning of the explosion­prevention requirements and/or Directive
2014/34/EU can no longer be guaranteed.
Use in potentially explosive areas is then not permitted.
Failure to observe these instructions may result in breakage of the coupling.
Danger from flying fragments.
6.2

Replacement of wearing parts

Replacement of the flexible elements without shifting the coupled machines is only possible on type D.
After releasing the connection of coupling parts 2/3, coupling part 3 is shifted axially. The flexible
elements (12) will then be made freely accessible by rotating coupling part 2. To facilitate the release of
coupling part 3, on sizes 440 to 520 forcing­off threads are provided in coupling part 3.
Fig. 8: Releasing coupling part 3
The flexible elements (12) must be replaced in sets. Only identical flexible elements (12) may be used.
For re­assembly, the instructions in sections 3 and 4 must be observed.
6.3 Demounting the coupling parts in case of shaft­hub connection with parallel key
Move the coupled machines apart.
Remove the axial fastening (set screw, end plate). Mount suitable detaching device. Using a burner, heat
coupling part (2; 4; 9) along its length and above the parallel keyway (max. + 80 °C). When heating up
observe the temperature range of the flexible elements (12) (see table 4), if necessary demount the flexible
elements (12).
Burner and heated coupling parts form an explosion hazard; therefore a non­explosive
environment must be ensured.
Pull the coupling part off. Examine the hub bore and the shaft for damage, and protect against rust.
Damaged parts must be replaced.
For re­assembly, the instructions in sections 3 and 4 must be observed.
80 95 110 125 140
5.0 6.0 7.0 8.0 8.0
BA 3102 en 02/2016
160 180 200 225 250
8.0 8.0 8.5 9.0 10.0
20 / 23
280 315 350 400 440
11.5 10.5 11.5 13.0 14.0
480 520
15.5 17.5