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6.3.2.2 Demounting the shrink disk
•
Remove the protective cover.
•
Remove any rust deposits from the shaft and the hollow shaft.
Under no circumstances must the tensioning bolts be unscrewed one after the other.
•
Undo all tensioning bolts one after the other by approx. 1/4 turn.
The stored energy of the outer ring is slowly loosened during disassembly via the bolts to be
loosened. For this to be carried out correctly, the procedure described here must be carefully
adhered to.
•
All tensioning bolts should now be further undone by loosening one after the other by approx. 1 turn.
The outer ring should now release of its own accord from the inner ring. If this is not the case,
the outer ring can be detensioned with the forcing threads. To this purpose screw some of the
adjacent fastening bolts into the forcing threads. The now releasing outer ring is braced against
the remaining bolts. This operation must be carried out until the outer ring completely releases
of its own accord.
•
The shrink disk is to be secured against axial shifting.
•
Draw the stub shaft out of the hollow shaft.
•
Pull the shrink disk off the hollow shaft.
For transporting and lifting the shrink disk it may be required to use a suitable lifting
device!
6.3.2.3 Cleaning and greasing the shrink disk
Only dirty shrink disks must be disassembled and cleaned.
•
Check all parts for any damage.
Damaged parts must be replaced with new ones! The use of damaged parts is not
permitted!
Only the complete shrink disks supplied by the manufacturer may be used. Combining
components from different shrink disks is not permitted.
•
Thoroughly clean all parts.
Contaminated solvents and dirty cloths as well as cleaning agents containing oil (such
as paraffin or turpentine) are not suitable for removing grease.
•
The conical surfaces of the inner and outer rings (3 and 4, see figure 16) must be free of grease and
oil.
─ A thin layer of lubricant must be applied evenly to the conical surfaces of the inner and outer rings
(3 and 4, see figure 16).
─ Provide the tensioning bolts (5, see figure 16) on the contact surface and on the thread with
lubricant.
─ Use a solid lubricant paste with a high MoS
not slide during fitting work and which shows the following characteristics:
─ friction coefficient "μ" = 0.04
─ resistant to pressure up to a maximum pressure of 300 N/mm
─ ageingresistant
based molybdenum disulphide content which will
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