Chapter 5
Installation
31
Step 3
• Insert the coupling into the motor shaft until the partition plate inside the coupling contacts the tip
of the motor shaft. Although the coupling can be inserted smoothly at first, a large friction is
generated at the end (for a few millimeters).
• Do not forcibly insert the motor shaft.
For the motor shaft provided with a keyway, remove the key and align the center phase of the
keyway of the motor shaft with the position indicated in Fig. 5-16 (with reference to the bolt) within
the mounting range of the coupling. Otherwise, proper tightening force cannot be obtained.
If the motor shaft is forcibly inserted, it could damage the coupling and motor.
If the motor shaft is not in contact with the partition plate, it could damage the reduction gear. (Refer
to Fig. 5-17)
Step 4
• Confirm that the tip of the motor shaft is in contact with the partition plate, and then tighten the
hexagon socket head cap screws with the specified tightening torque (refer to Fig. 5-16).
Table 5-2
For a taper motor shaft, an adapter with taper inner and straight outer is provided. After attaching
this adapter, perform the above steps.
Note
Note
Fig. 5-18
Fig. 5-16
Fig. 5-17
Hexagon socket
head cap screw
Keyway
Coupling
mounting range
Spline
Clamp section
Partition plate
Coupling insertion
length
Partition
plate
Exterior of
motor shaft
Clamping
surface
Bolt size
Tightening torque
