Elastomeric shaft coupling with accuracy and increased resistance to torsion. The SGAA038 couplings have a φ80mm external diameter and a small pilot bore . They are suitable to accommodate a 38mm maximum diameter shaft. The SGAA038 is only the one half of the coupling and to complete the coupling you will need another half SGAB045 with maximum bore diameter 45mm (or use another SGAA038). Alternatively to complete a shaft coupling you can use a half GTE3845 or GTI3845 with the corresponding taper bush type 1108 with a standard bore diameter Φ9 Φ10 Φ11 Φ12 Φ14 Φ15 Φ16 Φ18 Φ19 Φ20 Φ22 Φ24 Φ25 mm with keyway depending on the diameter of the second shaft you possess. The GTE receives the taper bush externally while the GTI receives the taper bush internally (from the elastic coupling side). It is essential that you also have the elastic coupling which comes in three colors (black EN3845 red ER3845 yellow EG3845) depending on the quality of the manufacturing material. The design of flexible couplings is characterized by two aluminium hubs having each stubby protrusions around their perimeters pointing towards the opposing hub. The two hubs mesh loosely together and the gaps between them are filled with blocks of elastomeric material molded into an asterisk-shaped element called “spider”. Couplings are elements connecting two rotating shafts and beyond transmitting power from one shaft to the other they perform the following functions: Ensure a torque transmission free from shocks by damping any torsional vibrations either due to load or self-induced Minimize torque shocks and peaks at a starting phase Compensate for slight angular and parallel shaft misalignments. General features. In flexible couplings the spider is the element determinant for the torque rating of every coupling. Its constructive material can make a significant difference in the coupling response to contrast factors as vibration temperature chemicals misalignment high RPM. The great advantage of flexible couplings lies in their “fail-safe” design as the coupling is not necessarily destroyed or rendered inoperable if the spider breaks away during operation. The system will continue to function in safety conditions preventing critical system downtime until the spider can be replaced at a more convenient moment. Applications. Flexible couplings are generally recommended for continuous-duty electric motor-driven machinery pumps gearboxes etc.