Pump Motor Bearing Cage Frequency Failure

Cage Defects are the Trickiest Ones.

Here's a Case.

Data Collected on Saturday Evening, the Equipment(Motor) Fails on Sunday Morning. It had to stop.

Good Thing It had a Standby. And even better that we had such Great Field Personell in our Team to take the decision to switch over between the Pumps.

Yes, Issues can be spotted. We Judged it as in Fair condition and not severe to the point that it required immediate stoppage.

Experts, What would you have judged based on the data shown?

Did we miss something?

Equipment Details -

1. Assembly - Motor Driving a Pump lifting Black Liquor (about 100 cSt).

2. Bearing Number (Motor DE) - 6313 ZZ C3 (FAG).

3. Power Rating - 45 kW.

4. RPM - 1475

pump motor cage failure