A conventional 4 bearing system has 2 bearings on the driving shaft and two bearings on the driven shaft. Both angular and offset shaft misalignment will be present to some deg and a full flex coupling is mandatory. The full flex coupling is the standard coupling having two gear ring sets, one set per half coupling.
Kop-Flex® Gear Coupling, Type EB Finished Bore, Series: H Series, 6-1/4 in Bore, 13-5/8 in OD, 12-3/8 in Overall Length, Full Flex Hub, 8-1/2 in Hub, 5.313 in Length Through Bore, 318000 in-lb Continuous/636000 in-lb Peak Torque, 4770 rpm Maximum, 505 hp Power, 3/4 in Dia x 3-3/8 in L Bolt, 10 Bolts, -40 to 190 deg F
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