Siemens 1MB115 Installation And Maintenance Manual page 87

3.2.2 Balance
The rotor is dynamically balanced. For shaft extensions with feather keys, the
balancing type is specified using the following coding on the face of the drive
end of the shaft:
• "H" means balancing with a half feather key (standard)
• "F" means balancing with a whole feather key
!
Risk of injury due to Incorrect installation or removal
If the required touch protection measures for drive output elements are
not observed this can result in physical injury and material damage.
• The general touch protection measures for drive output elements must
• Drive output elements may only be pushed on or pulled off with the
• The feather keys are only locked against falling out during shipping. If
The featherkey data on the shaft and transmission element must indicate the
correct type of balancing in each case and must be correctly mounted.
The balancing quality corresponds to vibration severity grade "A" for the
complete machine; vibration severity grade "B" is possible as an option, i.e.
in order to ensure the desired balancing quality, it must be ensured that the
featherkey data on the hub and machine shaft complement each other in the
case of a shorter or longer output transmission element.
CAUTION
be observed.
correct equipment.
you commission a machine without a drive output element, the feather
keys must be secured to prevent them from being thrown out.
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