Rockwell Automation Y-Series Brushless Servo Motor - Manual (Page 5)

Y-Series Motor Installation Instructions 5
Publication 1398-IN518A-EN-P — January 2001
Using Couplings and Pulleys
Mechanical connections to the motor shaft, such as couplings and
pulleys, require a torsionally rigid coupling or a reinforced timing
belt. The high dynamic performance of servo motors can cause
couplings, pulleys or belts to loosen or slip over time. A loose or
slipping connection will cause system instability and may damage
the motor shaft. All connections between the system and the servo
motor shaft must be rigid to achieve acceptable response from the
system. Periodically inspect connections to verify their rigidity.
When mounting couplings or pulleys to the motor shaft, ensure that
the connections are properly aligned and that axial and radial loads
are within the specifications of the motor. Refer to Motor Load
Force Ratings on page 14 for guidelines on how to achieve 20,000
hours of motor bearing life.