IS620P User Manual                                                      Chapter 2 Mounting Dimensions of Servo System
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2.1.3 Installation Precautions
Table 2-2 Installation precautions
Item Description
Rust-proof 
treatment
Wipe up the antirust agent at the motor shaft end before installing the servo motor, 
and then take rust-proof treatment. 
Encoder
 
•
Do not strike the shaft end during installation. Failure to comply will lead to 
damage to the internal encoder.
 
 
•
Use the screw hole at the shaft end when mounting a pulley to the servo motor 
shaft with a keyway. To t the pulley, insert a double-end screw into the screw hole 
of the shaft, put a washer against the coupling end, and then use a nut to push 
the pulley in. 
 
•
For the servo motor shaft without a keyway, use friction coupling or the like. 
 
•
When removing the pulley, use a pulley remover to protect the shaft from suffering 
severe impact from load. 
 
•
To ensure safety, install a protective cover or similar device on the rotary area 
such as the pulley mounted on the shaft. 
Flange coupling, 
pulley
Washer
Screw
Alignment
Align the shaft of the servo motor with the shaft of the equipment and then couple 
the shafts. When installing the servo motor, make sure that the alignment accuracy 
satises the requirement as described in the following gure. If the shafts are not 
properly aligned, vibration will be generated and may damage the bearings and 
encoder. 
Measure the distance at four different 
positions on the circumference. The difference 
between the maximum and minimum 
measurements must be 0.03 mm or less.
Installation 
direction
The servo motor can be installed horizontally or vertically.