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Installation
7.3
Installing a load
When connecting a load to the motor, align the centers of the motor output shaft and load shaft.
Flexible couplings are available as accessories.
Note
• When coupling the load to the motor, pay attention to the centering of the shafts, belt tension,
parallelism of the pulleys, and so on. Securely tighten the coupling and pulley set screws.
• Be careful not to damage the output shaft or bearings when installing a coupling or pulley to the
motor output shaft.
• Do not modify or machine the motor output shaft. Doing so may damage the bearings and
destroy the motor.
• Do not apply strong force using hammer or other tools when removing the parallel key. Doing so
may damage the motor output shaft and bearings (ball bearings).
„ Using a coupling
Align the centers of the motor output shaft and load shaft in a straight line.
„ Using a belt drive
Align the motor output shaft and load shaft in parallel with each other, and position both pulleys so that the line
connecting their centers is at a right angle to the shafts.
„ Using a gear drive
Align the motor output shaft and gear shaft in parallel with each other, and let the gears mesh at the center of the tooth
widths.
• Using a coupling
„ Using a parallel key (geared motor)
When connecting the load and gear output shaft with a key slot, secure the load using the key supplied with the gear
output shaft after machining the key slot on the load.
„ Installing on the flange surface (Harmonic geared type)
With a Harmonic geared type (excluding AR98), a load can be installed directly to the gear using the load mounting
holes provided on the flange surface.
Model
AR24
AR46
AR66
Note
• When installing a load on the flange surface, the load cannot be mounted using the key slot in
the output shaft.
• Design an appropriate installation layout so that the load will not contact the metal plate or bolts
used for installing the motor.
−16−
• Using a belt drive
Load
Flange
Bolts
Metal plate
Number of
Bolt size
bolts
M3
4
M3
6
M4
6
Load mounting holes
Tightening torque
Effective depth of
[N·m (oz-in)]
bolt [mm (in.)]
1.4 (198)
4 (0.157)
1.4 (198)
5 (0.197)
2.5 (350)
6 (0.236)
• Using a gear drive
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