Dimensioning
The coupling’s nominal torque must be higher than the maximum torque of the motor shaft.
For further checks it is useful to verify: inertia on acceleration / deceleration, incorrect positioning in case of application when high precision is required, the natural frequency of the application (simplified system with two masses).
Fitting
It is advised to machine the connection’s shafts with:
> Surface finish with Ra=1.6 µm.
> Coaxial precision 0.01 mm.
> Nominal tolerance h6.
At first, assemble the coupling by inserting the bellow into the relevant hubs and tighten the screws “S2” in sequence, respecting a cross sequence, continuously until you obtain the tightening torque indicated in the catalogue. Insert one hub on the first shaft along the N length and tighten the clamp locking screw “S1” with a torque wrench, respecting the tightening torque indicated on the catalogue. Leave the second shaft slides on the opposite hub along the whole N length and tighten the clamp locking screw with a torque wrench, respecting the tightening torque indicated on the catalogue.
It is important to consider that misalignments, axial, angular and parallel, must be considered paired together, as inversely proportional (one reduces when the other increases). If all types of misalignments occur, it is necessary that the sum in percentage respect to the maximum value doesn’t exceed 100%. If the metallic bellow is damaged, the whole coupling becomes unusable, so it is advised to be very careful in assembling and disassembling the individual components.
