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Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

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3.8 Mechanical Specifications of Servomotors3.8.3 Direction of Servomotor RotationPositive rotation of the servomotor is counterclockwise when viewed from the load. (Same as for servomotorswith gears.)Positive direction3.8.4 Impact ResistanceMount the servomotor with the axis horizontal. The servomotor will withstand the following vertical impacts:• Impact acceleration: 490 m/s 2• Impact occurrences: 2Vertical33.8.5 Vibration ResistanceMount the servomotor with the axis horizontal. The servomotor will withstand the following vibration accelerationin three directions: Vertical, side to side, and front to back.VibrationServomotor ModelAccelerationat FlangeSGMAH, SGMPH 49 m/s 2SGMSH, SGMGH, SGMDH, SGMUH 24.5 m/s 2 Impact applied to the servomotorSide to sideVerticalFront to backHorizontal shaft3.8.6 Vibration ClassThe vibration class 1 for the servomotors at rated motor speed is 15 µm or below.TERMS1Vibration ClassA vibration class of 15 µm or below indicates a total vibration amplitude of 15 µm maximum on the servomotor duringrated rotation.3-45

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