Cardan Shaft bearing vibrations 1

[DrejzaVu]

Has anyone ever found a way to detect problems with cardan shaft bearings? Is there enough energy and contact to transmit cardan shaft bearing faults through to the nearest machine bearing?

Mark

 

[Rob45]

Cardan (cross) shaft bearings don't rotate in the usual way, and in fact, if the joint angle is too small, will not rotate at all. Makes it hard to identify a characteristic vibration.

You can instead identify cardan shaft defects that produce increased joint motion as the bearing rollers deteriorate. Should be a twice-per-revolution motion or acceleration at the support nearest the end of the shaft.