BA 9142 en 02/2015
When measuring vibration, the following should be observed in general:
a) Measure only at the measuring points indicated in Figure 11 above.
b) Do not measure on resonance cavities (e. g. fins, inspection covers, pipes, etc.).
c) The motor output should also be recorded at the time of measurement, as output fluctuations may result
in different measurements.
After start-up and continuous operation of the entire system, an initial measurement should be carried out
to obtain the vibration profile of the gear unit. Subsequent measurements at monthly intervals will then
enable a trend analysis to be carried out.
Note
For assessing the gear unit according to the standard "DIN ISO 10816" the classification III applies to
this machine. It must be noted concerning this assessment, however, that the axial forces arising from
the grinding process are conducted to the foundation through the gear unit housing so that it cannot
be ruled out that vibrations are due to the grinding process and are not generated by the gear unit. For
this reason the standard "DIN ISO 10816" has only limited application for this type of gear unit.
Further information about vibration diagnosis is obtainable from:
http://www.automation.siemens.com/mcms/mechanical-drives/en/gear units/service
10.10
Repair
Note
Maintenance comprises all measures for reinstating the required condition.
NOTICE
Property damage
Damage to the gear unit is possible.
When carrying out repair work, especial care must be taken that, when doing electric welding work at
any point on the unit, the welding current is not conducted through rolling bearings or other movable
connections and measuring equipment. The welding current return wire must therefore be connected
directly to the part to be welded.
WARNING
Risk of personal injury from electrical shock.
Risk of personal injury from electrical shock when connecting electrical components.
Ensure zero voltage before connecting the devices.
DANGER
Danger to life
Danger to life from load falling down due to deficient attachment.
Do not stay underneath suspended loads.
When attaching, lifting, lowering and shifting the load, pay attention to the following:
– Observe the load limits.
– Proper fastening of the attachment equipment.
– Centre of gravity possibly being off centre.
– Even load distribution on load-bearing equipment with multiple load hook-ups.
– Low process speed.
– Oscillating the load and/or attaching the load to objects
or building parts is prohibited.
– Load hooks may not be loaded at their tip.
– Set down products only on even, non-slipping and stable underground.
