Advantages of BOA’s Multi-Ply Bellows
Cycle Life – The contour of the thin gauge multi-ply convolution is designed to keep pressure and induced deflection stresses at a minimum. As a result of the low stress level that the bellows experiences during operation, cycle endurance is improved tremendously.
Maximum Travel / Minimum Length – Because of the resulting stresses in a multiply bellows, larger movements are possible within a shorter overall length.
Safety –The multi-ply inner core prevents catastrophic failure. Should a crack occur for any reason, - stress, corrosion, mechanical - the plies, acting as a labyrinth seal constrain the pressure and medium and hold the entire joint intact. A small blister occurs in the outer ply. However, the joint would still perform satisfactorily for many thousand cycles.