... , 3V, 5V, BV pulley and so on. 2. Pilot bore, taper bore Pulleys(SPA, SPB, SPC AND SPZ), adjustable pulleys, multi ... wedge pulleys. 3. V-belt pulley for taper bush, with solid hubs. Standard sheaves, taper bushes sheaves, AK, BK series sheaves. Variable ... .5±0.217±0.331534°±0.5°-031538°±0.5° Cast Iron Pulleys with Carburization