Yaskawa Sigma-5 User Manual: Setup for Rotary Motors - Manual (Page 27)

2 Installation
2.2.3 Connecting Servomotor to Machine
2-6
2.2.3 Connecting Servomotor to Machine
The end of the motor shaft is coated with anticorrosive paint. Thoroughly remove the
paint prior to installation.
Align the shaft of the servomotor with the shaft of the machine, and then couple the
shafts. Install the servomotor so that alignment accuracy falls within the following
range. Vibration will damage the bearings or encoders if the shafts are not properly
aligned.
Do not allow direct impact to be applied to the shafts when installing the coupling as
the encoder mounted on the opposite end of the shaft may be damaged.
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.
(Turn together with coupling.)
Alignment Accuracy