Yaskawa Sigma II Series DC Power Input SGMAJ - Manual (Page 55)

3 Specifications and Dimensional Drawings
3.3.2 Mechanical Characteristics of SGMMJ Servomotors
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3.3.2 Mechanical Characteristics of SGMMJ Servomotors
(1) Mechanical Tolerance
This section describes the mechanical specifications of SGMMJ servomotor.
(2) Direction of Servomotor Rotation
Positive rotation of the servomotor is counterclockwise when viewed from the load.
(3) 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
Because the detector of the servomotor is installed on the shaft end opposite the load, do not apply shock to
the shaft. Failure to observe this caution may result in damage to the product.
(4) 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.
Vibration acceleration at flange: 49 m/s 2
Tolerance T. I. R. (Total Indicator Reading) Standard With gears Reference Diagram
A
Perpendicularity between the flange
face and output shaft 0.04 mm
(0.00157 in)
0.06 mm
(0.00236 in)
B Mating concentricity of the flange O.D.
0.04 mm
(0.00157 in)
0.05 mm
(0.00197 in)
C Run-out at the end of the shaft
0.02 mm
(0.000787 in)
0.04 mm
(0.00157 in)
Positive direction
Vertical
Horizontal shaft
IMPORTANT
Impact applied to the servomotor
Vertical
Front to back
Horizontal shaft Side to side