Yaskawa Large Capacity Sigma II Series - Manual (Page 288)

7 Servo Selection and Data Sheets
7.2.2 Mechanical Characteristics
7-12
„ Direction of Servomotor Rotation
Positive rotation of the servomotor is counterclockwise
when viewed from the load.
„ Impact Resistance
Mount the servomotor with the axis horizontal. The
servomotor will withstand the following vertical
impacts:
• Impact Acceleration: 490 m/s
2
• Number of Impacts: 2
SGMBH servomotors have a precision detector attached to the end of the shaft opposite the load.
Avoid direct impact on the shaft because it may damage the detector.
„ Vibration Resistance
Mount the servomotor with the axis horizontal.
The servomotor will withstand the following
vibration acceleration in three directions: Verti-
cal, side to side, and front to back.
• Vibration Acceleration: 24.5 m/s 2
„ Vibration Class
The vibration class for the SGMBH servomotors at
rated motor speed is as follows:
• Vibration Class: 15 µm or below
Positive direction
Horizontal shaft
Impact applied to the servomotor
Vertical
IMPORTANT
Horizontal
shaft
Impact applied to the servomotor
Vertical
Front to back
Side to side
Position for measuring vibration