
B-65272EN/04 FANUC AC SPINDLE MOTOR αiT SERIES 9.NOTES ON MOTOR INSTALLATION
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9.4 COUPLING SELECTION
Select a coupling that does not apply a thrust load onto the motor
shaft for a cause such as coolant pressure when the temperature rises
or cutting is performed. When attaching a coupling to the motor shaft,
do not strike the coupling so that no shock load is applied to the
bearing.
(Example of using a disk coupling)
NOTE
If a gear coupling or Oldham coupling is used, the
motor shaft can be left pushed into the inside of the
motor when the motor shaft is inserted into the
spindle. So, measure the distance (L in the figure
below) between the mounting face for a rotation joint
support housing and the flinger rear end face before
and after insertion, and check that the two measured
values are identical. Particularly when a gear
coupling is used, the gear section (closed section)
needs to have an air vent.
(Reference)
L
Mounting face for a rotation
oint support housing
Flinger rear end face
Motor model End face distance L
α1.5iT
(17)
α2iT to α3iT
(18)
α6iT to α22iT
(22)