MP-Series Food Grade Servo Motor Installation Instructions
23
Publication MP-IN004D-EN-P — April 2009
Shaft Key
Shaft keys are constructed of 300-series stainless steel. The specified tolerance
provides an interference fit (slightly larger than the opening) for a secure and rigid
connection.
Follow these steps to install a shaft key.
1.
Remove the shaft key, if present, using one of these methods:
• Lift the key by grasping it with a plier or similar tool.
• Lever the key with a flat blade screwdriver inserted between the key and
the bottom of the slot.
2.
Install a shaft key by performing this procedure.
a. Verify the replacement key matches the keyway in the shaft and the
mating mechanical connection (coupling or pulley).
b. Align the front of the key with the front of the motor shaft.
This prevents interference with the key by the end-of-cut radius.
c. Support the underside of the shaft with a fixture, and use a device to
apply a controlled force that presses the key into the keyway.
ATTENTION
Damage can occur to the motor bearings and the feedback device if sharp impact is
applied to the shaft during installation of couplings and pulleys, or a shaft key. Damage
to the feedback device can result by applying leverage from the motor mounting face to
remove devices mounted on the motor shaft.
Failure to observe safety precautions could result in damage to the motor and its
components.
Radius Cut at the
End of the Keyway
Key Aligns at
End of Shaft
Support
Fixture for
Shaft
Apply a constant force
evenly across the top of the key.
