BA 5230 en 04/2011
6.6.5
Inspection of the shrink disk
In all cases the examination of the shrink disk should be carried out simultaneously with the
examination of the gear unit,
however at least every 12 months
.
Inspection of the shrink disk is limited to a visual assessment of its condition. The following must be
observed when carrying out this work:
─
loose screws
─
damage caused by force
─
flush position of the inner ring (3) in relation to outer ring (4).
6.7
Couplings, clutches
As a rule, flexible couplings or safety slip clutches are used for the drive of the gear unit.
If rigid couplings or other in and/or output elements, which create additional radial and/or axial forces, (e.g.
gear wheels, belt pulleys, disk flywheels, hydraulic couplings) are to be used, this must be agreed by
contract.
Couplings must be balanced in accordance with the specifications in the pertinent
instructions manual!
For maintenance and operation of the couplings, refer to the specific operating instructions for
the couplings.
When installing the drives, make absolutely certain that the individual components are
accurately aligned in relation to each other. Inadmissibly large errors in the alignment
of the shaft ends to be connected due to angular and/or axial misalignments result in
premature wear and/or material damage.
Insufficiently rigid base frames or substructures can also during operation cause
a radial and/or axial misalignment, which cannot be measured when the unit is at
a standstill.
For permissible alignment errors in case of couplings supplied by Siemens, please refer to the
operating instruction manuals for the couplings.
If you use couplings manufactured by other manufacturers, ask these manufacturers which
alignment errors are permissible, stating the radial loads occurring.
Increased systemservice life and reliability and smoother running behaviour can be achieved
through the least possible radial and angular misalignment.
