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Installation
Bosch Rexroth AB
, RE 15300-WA, Version 06.2021
Tightening of shrink disc
1.
Keep tension in your lifting straps to avoid a skew setting of the coupling
adapter or coupling motor during the tightening of the screws. Wobbling caused
by a skew setting gives extra forces on the main bearings.
2.
In order to avoid misalignment of the two clamping rings during the tightening
of the screws, the gap between the rings must be measured in several places
during the process, see
. The difference between the measured gaps
must never vary more than 1 mm (0,04“) during any stage of the tightening
process.
3.
Pre-set the coupling screws in opposite pairs (12-6-9-3 o’clock) to max 1/3 of
the of the torque specified for the screws, see
. It is very important
that when you reach this stage the misalignment is kept within the tolerance as
described above
4. Mark the screw head
at 12 o‘clock with a pen or paint so that you can follow
the turning sequence of the screws.
5.
Set the torque wrench to max 1/3 of the specified maximum torque for the
coupling screws, tighten all bolts in sequence, shown in
for 2 or 3
passes. Increase the torque to max 2/3’ of maximum torque and tighten the
bolts another 2 or 3 of passes
6.
Set the torque wrench for the specified maximum torque. Tightening torque of
the coupling screws; see the sign on the coupling, or
7.
Start tightening the screws in sequence shown in
.
8.
Keep on doing this until you have reached the stated torque. Several passes are
required before the screws are tightened to specified torque. Keep checking the
alignment of the coupling. (15-20 passes may be necessary).
9.
When the specified torque is reached it is important that all screws are
tightened with specified torque and that no further movement can be observed.
Fig. 44: Gap between the clamping rings
Gap
Gap
DD00079284
Keep the coupling
adapter or coupling
motor in level with
driven shaft!
