TRASCO® Couplings

www.sitspa.comTRASCO ® couplingsDescriptionTRASCO ® flexible couplings consist of two metal hubs and anelastic gear ring which is resistant to oils, chemical agents andheat. The construction allows safe power transmission betweendriver and driven shafts, absorbing impact loads, and torsionalvibrations.In its class TRASCO ® coupling transmits more power in relationto the physical space occupied.It has a very compact design and allows safe power transmissionby absorbing peak loads and torsional vibrations.Moreover, the elastic deformation of the polyurethane gear ringcompensates angular and radial misalignments and also absorbssmall shaft length variation.The involute profile of the gear ring teeth prevents high stressconcentration on reduced surfaces and the crowned profileavoids the transmission of axial stress.The high duty factor of TRASCO ® couplings is due to the fact thatthe elastic element works under compression and never underflexion.TRASCO ® couplings are suitable for working in both horizontaland in vertical positions and easily support any load variation orreversal. The two coupling halves are electrically insulated fromeach other.TRASCO ®TRASCO ®“A” execution Spider “B” execution “BL” executionATEX 94/9/EC complianceIt is possibile to ask for specific certification for use in hazardousarea according to EC standard 94/9/EC. TRASCO couplings areavailable with specific mounting/operating instruction manual andconformity. For information, please contact our technical office.Hubs are available in cast iron GG25, die cast aluminum alloy orforged aluminum.Special request hubs are available in steel or cast iron GGG40.In the base execution, “GR” TRASCO ® couplings are available intwo different versions: precision “P” or economy “S”.In all other executions, only the precision type is manufactured.The difference between “P” and “S” type hubs is that in theprecision execution the circular sections of the hubs are precisionmachined, while in the economy execution, they are simplydeburred.The “S” version allows lower axial displacement as indicated in thetechnical performance table. Each hub is available in two types“A” and “B”, which can accommodate maximum bore size inmm corresponding respectively to the first and second number ofthe coupling designation.Besides the various executions shown in the catalogue, it isalways possible to manufacture coupling hubs for specialapplications.Direct drives (073.00)1