SIT’s Trasco flexible couplings consist of two metals hubs and an elastic gear ring which is resistant to oil, chemical agents and heat. The construction allows safe power transmission between driver and driven shafts, absorbing impact loads and torsional vibrations.

In its class SIT Trasco® coupling transmits more power in relation to the physical space occupied. Moreover, the elastic deformation of the polyurethane gear rings compensates angular and radial misalignments and also absorbs small shaft length variation. The involute profile of the gear ring teeth prevents high stress concentration on reduced surfaces and the crowned profile avoids the transmission of axial stress.

The high duty factor of trasco® couplings is due to the fact that the elastic element works under compression and never under flexion. Trasco® couplings are suitable for working in both horizontal and in vertical positions and easily support any load variation or reversal. The two couplings halves are electrically insulated from each other.

SIT Trasco® couplings can be supplied according to ATEX DIRECTIVE 94/9/CE designed for areas endangered by potentially explosive atmospheres.

The following models are available in the SIT Trasco® couplings range:

• GR execution - Standard execution
• GRB execution - Taper bush execution
• GRCAL execution - For use with SIT-LOCK® 8 locking elements
• GRL execution - Shaft execution
• GRL CAL3 execution - Shaft execution for use with SIT-LOCK® elements type 3
• GRF execution - Flange execution
• GRF C execution - Compact flange execution
• GRS execution - Double cardanic execution
• GRFRT and GRFRD execution - Drum brake and disk brake execution