3.2 Coupling to the Machine
3.2.1 Using a Coupling
3-4
3.2
Coupling to the Machine
You can couple the Servomotor to the machine with either a coupling or a belt.
Use the following procedures.
3.2.1
Using a Coupling
1.
Wipe off all of the anticorrosive coating from the motor shaft.
2.
Confirm that the centering accuracy is within the specified range using a dial gauge or
other means.
If a dial gauge is not available, slide the coupling along both shafts and make adjustments so that it
does not catch.
3.
Align the shaft of the Servomotor with the shaft of the machine, and then connect the
shafts with the coupling.
•
Use a flexible coupling that is designed for Servomotors. We recommend that you use a dou-
ble-spring coupling, which provides some tolerance in eccentricity and deflection.
•
Select a suitable size of coupling for the operating conditions. An inappropriate coupling may
cause damage.
•
When you couple the shafts, make sure that the required centering accuracy is achieved.
Vibration will damage the bearings and encoders if the shafts are not properly centered.
•
When you attach the coupling, do not subject the shaft to direct shock. Also, do not sub-
ject the area around the encoder to shock. Shock may damage the encoder.
•
If the coupling makes any abnormal noise, center the shafts again until the noise is elimi-
nated.
•
Make sure that the thrust load and radial load are within specifications. Refer to the spec-
ifications for each type of Servomotor for the thrust load and radial load.
Important
Measure this distance at four different positions on
the circumference. The difference between the
maximum and minimum measurements must be
0.03 mm or less.
Even within this range, make adjustments to
increase centering accuracy as much as possible.
Centering Accuracy
Note: When making the measurements, turn
the coupling and motor shaft together.
Important
