Size 63 half coupling, pump side, for group 3 gear pumps.
Coupling hub to fit on the shaft of a group 3 gear pump. It is size 63 and connects to the electric motor hub through the elastic spider of the same size, which absorbs vibration and small misalignments.
Group 3 pumps can have a 1:8 tapered, parallel keyed or splined shaft, depending on the maker and version. Before ordering, check the pump shaft and the size of the fitted coupling.
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