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

W-Series Motor Installation Instructions 5
Publication 1398-IN520A-EN-P — May 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 17 for guidelines on how to achieve 20,000 hours of motor bearing
life.
ATTENTION
!
Damage may occur to the motor bearings and the
feedback device if sharp impact to the shaft is applied
during installation of couplings and pulleys. Damage to
the feedback device may result by applying leverage
from the motor mounting face to remove devices
mounted on the motor shaft.
Do not strike the shaft, couplings, or pulleys with tools
during installation or removal. Use a wheel puller
applying pressure from the user end of the shaft to
remove any friction fit or stuck device from the motor
shaft.
Failure to observe these safety procedures could result
in damage to the motor and its components.