
B-65232EN/03 DESCRIPTIONS FOR FANUC AC SERVO MOTOR β series 2.NOTES ON USE
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2.3 COUPLING
A precision detector is directly attached to the shaft end of the servo
motor. Pay attention to the following items to prevent damage to the
detector.
(1) When connecting the power transmission elements such as a
gear, a pulley and a coupling to the shaft, take care not to apply a
shock to the shaft.
(2) Generally, in the case of straight shaft, use a span ring for
connection with the shaft.
(3) In the case of tapered shaft, match the tapered surface with the
power transmission element and fix by tightening the screw at
the end. Even if the power transmission element cannot be
mounted securely, for example, because of the woodruff key
being tight, do not strike the shaft with a hammer or the like. The
woodruff key mounted on the taper shaft is used mainly for
positioning, while the tapered surface of the shaft is used for
torque transmission. The tapered surface of the transmission
element should be ground so that at least 70% of the papered
surface meets the shaft surface for efficient torque transmission.
(4) To remove the connected power transmission element, be sure to
use a jig such as a gear puller.