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5.3.5
Balancing
In accordance with the requirements for smooth running, the rotor core with the spindle shaft
must be implemented with the appropriate vibration severity level.
● Remove the protective film before balancing the rotor core.
● Balance the mounted rotor core as described below.
Note
The spindle manufacturer is responsible for performing and providing proof of the balancing
procedure.
NOTICE
Risk of motor damage caused by remaining drilling chips
Ferrite chips stick to the rotor core. During balancing by drilling the balancing disks, chips
can damage the rotor core and pre-mounted bearing.
• Ensure an effective chip removal.
• Protect the bearing from contaminations.
NOTICE
Risk of damage to the rotor core banding
The protective film must be removed before balancing the rotor core. Careless handling of
the rotor core can damage banding made of composite fiber.
• Handle the rotor core carefully.
• Prevent damage to the rotor core banding (composite fiber).
● After balancing the rotor, reattach a protective film to the rotor banding.
Rotor core with sleeve
Depending on the variant, the manufacturer delivers the rotor cores with sleeve either pre-
balanced or not pre-balanced.
Note
The rotor core must not be modified.
● The pre-balanced rotor cores with sleeve in the delivered state conform with ISO 1940:
G2.5 (reference speed 3600 rpm).
● After mounting, fine balancing of the "spindle shaft - rotor core" system may be
necessary.
● The "spindle shaft - not pre-balanced rotor core" system must be balanced.
To do this, use the balancing planes provided by the spindle manufacturer on the spindle
axis provided for this purpose.
1FE1 synchronous built-in motors
Hardware Installation Manual, 12/2016, 610.43000.40b
Mechanical mounting
5.3 Mounting/dismantling the rotor
67
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