Drawn Cup Roller Clutch Bearing, such as the HK2220 needle bearing model, utilizes needle roller bearings produced by Suma Bearing Manufacturing Company. Needle roller bearings are characterized by cylindrical rollers that are thin and long relative to their diameter, hence the name "needle roller." Despite their compact cross-section, these bearings offer high load-carrying capacity.... https://www.suma-china.com/Product/HK-Series-Drawn-Cup-Needle-Roller-Bearing.html