6.4 Mounting the feather key
WARNING
Injuries due to ejected feather key
When the motor with feather key is running, the key on the shaft can be ejected by centrifugal
force. This can result in personal injury or property damage.
• Before operating the motor, the feather key must be secured on the shaft to prevent it from
being ejected by centrifugal force.
NOTICE
Damage to motor bearings due to improper operation
Never install the feather key by hammering it into the slot, as this may damage the bearing.
• Mount the feather key without hammering on the keyway or the shaft extension.
Precondition
To avoid damage to the shaft extension or feather key, use water pump pliers or siphon pliers
with soft tips made of plastic or measurement to mount the feather key.
Procedure
1. Place the feather key straight on the keyway.
2. Press the feather key lightly into the keyway using the water pump pliers.
Figure6-1 Mounting the feather key
3. Before operating the motor, you must mount drive elements, e.g. a belt pulley or a coupling,
on the shaft end using a feather key.
❒
Mounting
6.4Mounting the feather key
SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
72 Operating Instructions, 12/2023, A5E50610821B AF