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MP-Series Food Grade Servo Motor Installation Instructions
Publication MP-IN004D-EN-P — April 2009
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 causes system instability and can damage
the motor shaft. All connections between the system and the servo motor shaft must
be rigid to achieve an acceptable response from the system. Periodically inspect
connections to verify their rigidity.
When mounting couplings or pulleys to the motor shaft, make sure that the
connections are properly aligned and that axial and radial loads are within the
specifications of the motor. Refer to
Shaft Seals
for guidelines to achieve 20,000
hours of motor bearing life.
A shaft key provides a rigid mechanical connection with the potential for
self-alignment when the key is properly installed. These sections provide additional
information:
• Refer to
Mounting Dimensions
for information about the key and shaft
keyway.
• Refer to
Shaft Key
for recommendations on how to remove and install a
shaft key.
ATTENTION
Damage may occur to the motor bearings and the feedback device if sharp impact is applied
to the shaft during installation of couplings and pulleys. Damage to the feedback device
may result from applying leverage to the motor mounting face when removing devices
mounted on the motor shaft.
Do not strike the shaft, couplings, or pulleys with tools during installation or removal. Use a
wheel puller to apply pressure from the user end of the shaft to remove any device from the
motor shaft.
Failure to observe safety precautions could result in damage to the motor and its
components.
