Flexible coupling: bellow coupling
4.9 - 328 Ncm, ø 2 - 12.7 mm A.C.C.&S

Flexible shaft couplings
Torsional stiffness is a key value in the accuracy of a shaft coupler: the stiffer the coupling, the more accurate the motion transmission from the motor to the driven component. In the area of servo couplings or encoder couplings, bellows couplings are some of the stiffest available.
Precision motion control applications often require shaft couplings with low wind-up to ensure accurate positioning, and low side thrust to reduce load on bearings. Most of the coupling types have either low wind-up or low side thrust, but not both.
A.C.C.&S. flexible shaft Nickel Bellows Couplings (or couplers) exhibit both:
torsional rigidity for precise position transmission
axial, lateral and angular flexibility for misalignment compensation between shafts