Siemens FLENDER K SH Series - Fitting with Loose du Bush; Axial Securing; Shrink Disk; Demounting

63 / 109
BA 5846 en 05/2015
6.7.2.2 Fitting with loose DU bush
The loose DU bush is pushed onto the machine shaft, fixed rigidly in position with a locating tie and then
pulled into the hollow shaft of the gear unit along with the machine shaft (see figure 34) .
NOTICE
Material damage
Risk of damage to the gear unit through canting during fitting work.
When fitting the gear unit on the drivenmachine shaft, the hollow shaft must be in line with the
drivenmachine shaft. Any canting must be avoided.
Instead of the nut and threaded spindle shown in the diagram, other types of equipment such as a hydraulic
cylinder may be used.
NOTICE
Material damage
Risk of damage to the rolling bearings through canting, when the gear unit is fitted.
The hollow shaft may be tightened against a machineshaft collar only if the gearunit configuration is one
of the following:
– Torque arm
6.7.2.3 Axial securing
If the shrink disk is fitted according to instructions (see item 6.7.3), the gear unit is fixed securely enough
in the axial direction. Additional axial securing is not required.
6.7.3 Shrink disk
The shrink disk is delivered ready for fitting.
Note
For the shrink disk used, take the instructions in the related operating instructions "B 3233" into account.
These operating instructions are an integral part of the orderspecific documentation.
• Fit the protective cover.
6.7.4 Demounting
• Remove the protective cover.
• If frictional corrosion has occurred on the seating surfaces, rustreleasing agent may be used to
facilitate forcing off the gear unit. The rust releaser can be injected through the pressureoil connection
(see figure 35), using a pump.
• The end plate and the locking ring must first be removed.
• When the rustreleasing agent has taken effect, pull the gear unit off using the device (see figures 35
and/or figure 32).
• Removing the gear unit from the drivenmachine shaft can be done as follows:
─ preferably using a hydraulic lifting unit (see figure 35), or
─ using forcingoff screws in an end plate (see figure 32), or
─ using a central threaded spindle.