Sigma II User’s Manual Chapter 2: Installation2 - 3• Relative humidity (r.h.) of 20 to 80% with no condensation.• Accessible for inspection and cleaning.2.1.3 AlignmentAlign the shaft of the servomotor with the shaft of the equipment, and then couplethe shafts. Install the servomotor so that alignment accuracy falls within thefollowing 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 encodermounted on the opposite end.2.1.4 OrientationSGMH servomotors can be installed either horizontally or vertically.Measure this distance at four different positions on the circumference. The difference between themaximum 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. Thedifference between the maximum and minimum measurements must be0.0012in (0.03mm) or less. (Rotate with the shafts coupled).
