Recent content by alexsurf

Thank Tmoose to have make it more realistic so it means that misalignment and unbalance decrease because of something else ? regarding unbalance and misalignment only, energy losses are also relative to : -temperature (due to friction in bearing(#% HP?) and coupling(#% HP ?) ) -loading...

thank you guys to summarize from my new point of view, misalignment and unbalance increase vibration and heat up and bearing friction -power consumption for industrial application loaded on not could be up to 10% HP for each phenomena ? -so 20% HP in the worth case ?

hello Guys, Do you have an idea of quantification (some figures before and after job) of energy losses with unbalance or misalignement ? thank

Hello Evrybody, Could you answer me about this Vibration versus Ultrasound analysis (advantage/disadvantage, reliability) ? for bearing condition (low and high speed) for gearmesh condition (low and high speed) Best regards Alexsurf

i will check for something square or 4 keys thank you very much

Hello i made a measurement on a spindle machine with keys to fixe gears on the shaft spindle. and i have a 155Hz peak with 2 side bands of 38,8Hz the turning speed is also 38,8Hz. Dou you think it could be key wear ? regards zzlinks@hotmail.com

Could someone tell me the method to make balancing job with only one accelerometer ?

Do you know how detect bending shaft on a screen machine with excentric shaft ?

each manufacturer of bearing got his own internal construction for bearing for FAG bearing contact : http://www.fag-industrial-services.com there are friendly ;))

ISO value 10-1000Hz in vertical radial position: is back:4,5mm/s and front:5,1mm/s ISO limit is 11,2mm/s ? but constructor tell 3,5mm/s ? (what does it mean, motor only without coupling ? or maximum limit with coupling ?)

motor speed is about 25Hz

i have only take a vertical radial measurment at the end of the motor, there is an hydraulic coupling As you said, i have to look only on the velocity spectrum. -So you think that i have to take horizontal radial measurment and axial ? -but with this data, do you think something looks good...

hello all, I wish you all an HAPPY NEW YEAR I made one radial measurment on a motor and i found in velocity spectrum 2 pics : 21,3Hz;4mm/s and 24,9Hz;4mm/s and in demodulated spectrum pics: 100,5Hz with 3 harmonics and 941Hz with side bands of 100,5Hz What could we say ? THANK YOU

thank mikeyP, but i am more looking for excel code to find pics, harmonics, side bands in a array in MS EXCEL ? :-))

Hello, I am looking for EXCEL Visual Basic application to make fft, looking for harmonics, side bands, ... tools for analysis and make a diagnosis for mechanical vibration. :-)