Yaskawa Sigma II Series Servo System - Manual (Page 31)

Sigma II User’s Manual Chapter 2: Installation
2 - 3
• Relative humidity (r.h.) of 20 to 80% with no condensation.
• Accessible for inspection and cleaning.
2.1.3 Alignment
Align the shaft of the servomotor with the shaft of the equipment, and then couple
the shafts. Install the servomotor so that alignment accuracy falls within the
following range.
Note:
• Vibration, which will damage the bearings, will occur if the shafts are not properly aligned.
• When installing the coupling, prevent direct impact to the shaft. This can damage the encoder
mounted on the opposite end.
2.1.4 Orientation
SGM H servomotors can be installed either horizontally or vertically.
Measure this distance at four different positions on the circumference. The difference between the
maximum and minimum measurements must be 0.0012in (0.03mm) or less. (Rotate with the shafts coupled).
Measure this distance at four different positions on the circumference. The
difference between the maximum and minimum measurements must be
0.0012in (0.03mm) or less. (Rotate with the shafts coupled).