R&D flexible coupling for Marine Engine

Flexible couplings are made of hard but elastic polyurethane and are able to withstand any temporary engine/shaft misalignment. It is provided with the bolts and nuts needed for installation. (FC = power hp x 100 rpm on shaft). SELECTION EXAMPLE P' = Engine Power = 40 CV N = maximum engine rpm = 3000 rpm R = Gearbox reduction ratio = 2:1 = 2 N' = Shaft Revolutions = N/R = 3000/2 = 1500 rpm P = Coupling Permissible Power P=(N'/100)x f --> P>P' Our engine has an SMI-R3 (ØD=63.5) gearbox, so we look in the catalogue for a coupling that fits the gearbox flange's. We choose the 40025100 and determine its admissible power P. P = (1500/100)x3 = 45CV > 40CV --> CORRECT Note: If it is assembled with the TM-93 gearbox, it is necessary to add the reference 40040101 to mount it.

Part Number Description DCF2DBDB1LFC
40025100 R & D Flexible Shaft Coupling 102x28 102 MM4X9,9 MM82,55 MM63,5 MM28 MM3
40025101 R & D Flexible Shaft Coupling 102x28 102 MM4X9,9 MM78 MM50 MM28 MM3
40030100 R & D Flexible Shaft Coupling 102x31 102 MM4X9,9 MM82,55 MM63,5 MM31 MM8
40040100 R & D Flexible Shaft Coupling 142x41 142 MM4X11,2 MM108 MM63,5 MM41 MM13
40045100 R & D Flexible Shaft Coupling 142x50 142 MM4X11,2 MM108 MM63,5 MM52 MM20
40045101 R & D Flexible Shaft Coupling 152x55 152,4 MM6X16 MM120,6 MM76,2 MM55,4 MM37
40050100 R & D Flexible Shaft Coupling 155x50 155 MM6X16 MM120,6 MM76,2 MM50 MM28
40050101 R & D Flexible Shaft Coupling 223x124 223 MM10x18 MM170 MM140 MM124 MM75
40050102 R & D Flexible Shaft Coupling 155x58 152,4 MM6X12 MM120,6 MM102 MM55,4 MM37

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