Vertical Electric Motors - ITT i-ALERT2 Application Manual

VERTICAL ELECTRIC MOTORS

The best mounting location for the i-ALERT2 device will depend on which class of vertical motor is being monitored. For
vertical solid shaft motors with 2 rigid bearings, instrument the upper thrust bearing housing first since this is the primary
bearing absorbing thrust loads. The lower bearing can also be instrumented if desired.
Figure 19: Vertical Motor with 2 Bearings,
monitor at each bearing
For vertical hollow shaft (VHS) motors it is recommended to mount the i-ALERT2 device adjacent to the thrust bearing at
the top of the motor. Most VHS motors do not have lower bearings and therefore there is no need for a second monitor.
Figure 20: Vertical Hollow Shaft Motor, at thrust bearing
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