
B-65272EN/04 SPECIFICATIONS FOR THE αi SERIES 4.NOTES ON INSTALLATION
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3 Use the eyebolt of the motor to lift only a single motor, (gear and
pulley may be attached).
4 Place a cover over an air-cooled motor to prevent the motor from
being exposed to coolant or lubricant.
5 Limit the vibration acceleration at the rear bracket of the motor
to 0.5 G (4.9 m/s
2
) to ensure the long-term reliability of each part
of the motor.
In particular, to limit the acceleration in the case of direct
connection to 0.5 G, carefully perform centering with the mating
spindle and make the motor shaft parallel with the spindle.
Details of the measuring method
Measuring instrument:
Equivalent to the VM-3314A or VM-3304 manufactured by
IMV CORPORATION.
Condition: At the time of highest-speed rotation with no load
Measurement frequency range with no load at the highest speed:
10 to 1000 Hz
Criteria: 0.5 G (4.9 m/s
2
) or less at the rear bracket
1. Using a pickup
A. Pressing a pickup against
the side of the rear bracket
B. Screwing a block into the eyebolt
internal thread on the rear
bracket, then screwing a pickup
into the block.
Block
Pickup
Pickup
Side of the rear bracket
Eyebolt internal thread
2. Vibration measurement position (rear bracket)
Side of the rear bracket
Eyebolt
internal thread