Martin 40A54 Stock Bore Type A Single Pitch Roller Chain Sprocket, 23/32 in Dia Bore, 8.885 in OD, #40 Chain, 54 Teeth, 1/2 in Pitch, Steel
A plates are flat sprockets with no hub extension on either side. They can be altered for your application with bolt holes, custom bores, hardened teeth or special hubs welded to them.
Martin Single Pitch Roller Chain Sprocket, Stock Bore Type A, 23/32 in Bore Dia, 8.885 in Outside Dia, #40 Chain, 54 Teeth, 1/2 in Pitch, 8.599 in, 3-1/2 in Hub Dia, 0.284 in Length Through Bore, Steel
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