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MarkL

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Reply with quote  #16 
On Bigger Motors (37kw upwards) I tend to do the same as Big J, if the motor has a decent bolt head. I hate using motor fins but alas most want us to do the work but don't want to pay the extra money for mounting targets. I love WEG motors as they are very well designed for getting good data from on both ends.


RustyCas

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Reply with quote  #17 
WEGs give us something to do, so...
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JuddJones

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Reply with quote  #18 
Quote:
Originally Posted by MarkL
On Bigger Motors (37kw upwards) I tend to do the same as Big J, if the motor has a decent bolt head. I hate using motor fins but alas most want us to do the work but don't want to pay the extra money for mounting targets. I love WEG motors as they are very well designed for getting good data from on both ends.


I do it even on the smaller ones. I have found the weight of the handle on my quick release extension pole will keep the accelerometer from moving if I position it to hang straight down according to the orientation I want my triax to sit.






sensor.jpg  2018-05-13 12_52_01-sensor2.jpg 

Noknroll

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Reply with quote  #19 
Ditto what Big J said re: measuring on fan cover bolts
MarkL

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Reply with quote  #20 
Quote:
Originally Posted by RustyCas
WEGs give us something to do,so...


I know you made mention to wegs questionable quaility before Rusty, but they are very reliable in my experience, just happen to be a popular brand in ireland at least especially on bigger pumps and fans.

Big J that Triax looks very like the Azima one but then again same accelerometer manufacturer makes them, it's nice a neat compared to some of the big square lumps I've seen.

JuddJones

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Reply with quote  #21 
That is the one that comes with the SPM instrument if you order triax.
OLi

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Reply with quote  #22 
I often use the in some places standard mounted SPM stud that got direct with mechanical connection to the bearing, only part from SPM I use part from a old stethoscope.
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P Hine

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Reply with quote  #23 
In our plant I used a hole saw and drilled thru the fan housing on the NDE end to get the magnet onto the end bell. Although I might be in a different situation than those who are contracting their service and not employed full time by the company. I had the liberty to cut/drill into the motors.

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Reply with quote  #24 
Quote:
Originally Posted by MarkL
I know you made mention to wegs questionable quaility before Rusty, but they are very reliable in my experience, just happen to be a popular brand in ireland at least especially on bigger pumps and fans. 
From what I heard they had a bad reputation a few years back, but have been improving lately.  We don't have much experience, but installed one WEG motor last year and it's running fine (that one is the sum total of my first-hand  WEG experience)
fburgos

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Reply with quote  #25 
A little off topic but now that you mention, we had couple of big 1100kw 3600 rpm weg motors failing without warning, personally I think was bearing skyding, now we had problem with another 800kw .. Wonder if its just bad luck
ssimmon1

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Reply with quote  #26 
Figured I'd resurrect this thread than starting a new one...

Has anyone had any experience with the grease/zerk fitting mounts? Thinking about giving them a go in a few spots. 

[MH134-1A_Builder750] 
OLi

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Reply with quote  #27 
Yes had them extensively on flimsy fan mounts where it was the only way to mount anything on pharma ventilation where you get "dead or funny" unknown which when you open fan enclosure so we installed such adapters bolted on accels and pulled cable outside when plant was down. We had those done for us locally for that contract and found there are 2 sizes of zerks bot "Imperial" threads and the accel thread, we have M6 in ours and I still have a few on the shelf, mine are painted, not stainless for cost.  
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MarkL

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Reply with quote  #28 
I've seen thee before and really like the look of them, but anywhere I've seen them they were pricey, but definitely worth consideration on bigger Siemens motors where ,there's no place to get close to non drive end bearing
Vibe-Rater

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Reply with quote  #29 
Quote:
Originally Posted by JuddJones
I do it even on the smaller ones. I have found the weight of the handle on my quick release extension pole will keep the accelerometer from moving if I position it to hang straight down according to the orientation I want my triax to sit.






sensor.jpg  2018-05-13 12_52_01-sensor2.jpg 
Not sure what is happening here. But ditto on decent sixe bolt head. As for the accelerometer holder, very compact but I don't like the triax.  I have more compact with a single axis and I don't have to stand there twisting my right hand to get the right hand rule thing happening.  How do you do that on a paper machine with lots of guarding and obstructions, you can't get the orientation the same every time. In most cases 3 axis is simply not required to properly diagnose. just my thing and many others I know. rgds  ps. note the Mobius mousemat - go Jason!!
GaryVibe

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Reply with quote  #30 
I am being pushed into letting our Operations staff collect my route data day-to-day. Time has been spent in the past during low work times to have mounting targets installed on over 90% of the equipment. This is going to yield big when I hand the data collection over. It is the same location every time, with a relatively clean surface and good repeatable data. The install cost was not as large as was expected, and it is in the maintenance work orders to install targets on replacement pumps and motors before installation, a big plus. When considering the potential for 30+ operators collecting data, and each one being trained on proper data collection techniques, I am optimistic.
I have encountered those that use triax's and have found that most are using some sort of "quick-connect" mount. I personally only use them for trouble shooting and diagnostics- too  expensive (in my opinion) for route work. 

I also used an extension pole that was custom made by a machinist in the shop. He bought the MIL type metal connector and machined a very nice mount that had 270deg swivel motion. by using the 2 pin MIL type connector I could use any of the available sensors with a good magnet - works very good on a extension pole with 2 meters extended length. 
I also have several locations where the "Zerk" adapter was installed, yes expensive, but also reusable when the bearing housings were changed. They extend just enough that using a standard top exit style sensor I can get them through the guards that our safety dept. went nuts with!!!! It is a single point but I use them for trending  and it is a faster more secure method than the adhesive mounts on those points. And Time is Money as they say....


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