Just out of curiosity, where do you position the transducer when collecting vibration data on a motor on the Opposite Drive End (ODE)bearing? aka, the outboard bearing.

95% of the motors in our plant have a fan cover over the ODE end bell. So, out of simplicity, I have always taken them (from position A) on the stator fins/iron as close to the end bell as the fan cover will allow. I realize this isn't ideal because it's not in-line with the bearing, but...

Question:
Where do you collect vibration data, for the ODE bearing? (See attatched picture)

Choices:
Position A: stator iron/cooling fins
Position B: on the fan cover
Position C: drill a hole in the fan cover and use a probe to contact the end bell
Position D: Other - Please explain

 

Nice to see we all agree for a change...

Realizing this is a photo and for simplicity - Position A as shown due to the pulley drive and the inboard bearing as the fulcrum regardless of rotation direction. However, if this were a direct drive and CW rotation Pos A for me would be on the opposite side.

Glad you pointed this out Sam. I have always thought that yes on the inbaord bearing this is where to locate the sensor because of the loading from belt but it has always been my thought that on the outboard bearing the best location would be on the side marked in the photo just because of the fact that I beleive the most load is produced on this side based on the fulcrum theory and we want to have reading as close to the load zone as possible.This is just my opinion and ICBTW. Does anyone else's train run on the same track I would really like some feedback to verify or dispute my thought. It is always good to have a subject bounced around to see if it holds merit but more so to be collecting good data in the right places.