Breakage of Typical Bellows Style Couplings
Misalignment between two rotary shafts connected by a typical bellows
style coupling is inevitable: it is only a matter of time.
And almost inevitably, the breakage, by shear, is near the first valley
next to the solid boss at one end of the coupling.
Precise installation, in brief, is necessary to obtain long operation life.
|Fracture caused by oscillations
Resonance and Oscillations
Resonance frequently results in catastrophic failure: i.e. breakage; In typical
bellows style couplings which all possess natural or resonate frequencies,
although typical bellows couplings without rubber may not survive the first,
and resonance causes breakage.
Oscillations received from stepping or servo motors, may induce an eccentric
rotation or oscillation resulting in inaccuracies in positioning control and also
In both resonance and induced oscillation breakage occurs in any part
of the bellows.