Is it possible to have a gearbox with a 30Hz input and 35Hz output shaft speed cause a 65Hz vibration frequency response? We have a machine with repeat bearing failures which has a dominant frequency of vibration at 65Hz which lines up to nothing else except the addition of the input and output...
We have had a vibration in the third section of the paper machine which has the following characteristics.
In velocity: 13650cpm - 0.067ips, 18225cpm - 0.082ips, 22725cpm - 0.0525ips, 27075cpm - 0.069ips.
In acceleration: distinct peak at 4560cpm at around 0.02 g's with a gradual decrease in...
I presently am working on a refiner vibration (Two 5000hp synchronous motors facing each other 1200 rpm), that has a vibration under load with the following FFT characteristics:
1200 cpm - 0.0168 ips
2400 cpm - 0.0372 ips
3600 cpm - 0.0116 ips
2138 cpm - 0.3524 ips
4276 cpm - 0.0434 ips
6414...
