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Tip of the Week

Gearbox Failure

In a previous Tip of the Week we provided information about gearboxes. Same tip, but includes a new case study hot off the press.

Reduction gears play a key role in industry to control shaft rotation speeds of various applications. Knowing a little bit about the gear application being tested allows you to rely on the Emax Current Demodulation test to accurately trend changes in the condition of the gears. The current being measured is feeding the stator windings. However, changes in torque due to load or fault anomalies will transfer through the gear box to the motor rotor, into the air gap between the rotor and stator, finally impacting the stator current. Gear box related anomalies will result in elevated peaks correlating to the reduced output shaft speed of the gear box. It is important to establish proper baseline amplitudes and build band alarms around these known frequencies on the current demodulation spectrum in order to watch for trends in future testing.

To learn more about gearbox analysis watch our YouTube video case study at:


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Gearbox Failure
November 12, 2018
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Learn More - Videos

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Fault Zones
Power Circuit Fault Zone
Power Quality Fault Zone
Rotor Fault Zone
Stator Fault Zone
Air Gap Fault Zone
Insulation Fault Zone

Case Studies
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