This steel shaft sleeve adapts a crankshaft from 3/4" to 1" diameter. It comes with step key that offsets from 3/16¡± to 1/4¡°.

Applications:
¡¤ Alters motors with a different diameter shaft
¡¤ Alters pulleys for a different speed or belt
¡¤ Reduces the necessity of buying a new motor or pulley to maintain existing components and speed/power requirements.
¡¤ Adapts larger wheel bores to smaller axels
¡¤ Works with Gas Engine Crank Shafts to enlarge the crank diameter to fit pulleys, gear boxes etc.

Part¡¯s specification:
¡¤ Sleeve inside diameter 3/4"
¡¤ Sleeve outside diameter 1"
¡¤ Sleeve length is about 3"
¡¤ Sleeve Keyway slot 1/4"
¡¤ Step Key Length is about 2"

The sleeve and step key are designed to exact fit on your 3/4¡± diameter crankshaft with 3/16¡± keyway and enlarge it to 1¡± diameter with 1/4¡± keyway.