3.8 Mechanical Specifications of SGMAH, SGMPH, SGMGH, SGMSH, and SGMDH Servomotors
3-47
3
3.8.3 Direction of Servomotor Rotation
Positive rotation of the servomotor is counterclockwise when viewed from the load. (Same as for servomotors
with gears.)
3.8.4 Impact Resistance
Mount the servomotor with the axis horizontal. The servomotor will withstand the following vertical impacts:
• Impact acceleration: 490 m/s
2
• Impact occurrences: 2
3.8.5 Vibration Resistance
Mount the servomotor with the axis horizontal. The servomotor will withstand the following vibration accelera-
tion in three directions: Vertical, side to side, and front to back.
3.8.6 Vibration Class
The vibration class
1
for the servomotors at rated motor speed is 15 µm or below.
Positive direction
Vertical
Servomotor Model
Vibration
Acceleration
at Flange
SGMAH, SGMPH
49 m/s
2
SGMGH, SGMSH, SGMDH
24.5 m/s
2
Impact applied to the servomotor
Vertical
Front to back
Horizontal shaft
Side to side
1
Vibration Class
A vibration class of 15 µm or below indicates a total vibration amplitude of 15 µm maximum on the servomotor during
rated rotation.
TERMS
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