We require a portable balancer for two plane balancing need not be new. Does anybody know of URL's for second hand machinery that would likely have listed this type of equipment???
I have collected spectra of a 90 kw 4 pole 1480 rpm 50 hz supply AC motor with a 12 blade overhung fan mounted direct on the motor output shaft. Of concern is an ampltude of vibration occurring at 1695 hz (approx 68 times running speed of the motor)on all spectra. An amplitude of 6.9 mm/sec rms...
