SKF H 3122 Adapter Sleeve, 100mm Shaft Size, Used With 20300K, 22200K and 23100K Series Roller Bearings: Bushed Bearings: Amazon.com: Industrial & Scientific
To learn the tapered adapter sleeve in 1 minute!
H211D bearing, Adapter Sleeve 50x81x50 for Northern Mariana Islands, 0.282 KG - en.tradebearings.com