LicBund 5/8" to 3/4 inch w/Step Key Gas Engine Pulley Crank Shaft Sleeve Adapter ...
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Product Details
Bushing inner diameter 5/8", outer diameter 3/4", sleeve length about 3", keyway 3/16', stepped key length about 3".||Replace motors with shafts of different diameters, and replace pulleys with different speeds or belts.||Used in conjunction with gas engine crankshafts to enlarge the crank diameter to fit pulleys, gearboxes, etc.