... of bearings, such as: Needle roller bearings, open type(1), closed Needle roller bearings(2), needle roller bearings with ... needle roller bearings, are: 1, needle roller cage assembly 2, needle roller bearings without ribs 3, self-aligning roller bearings 4, Combined needle roller / ball bearings 5, combined needle roller / thrust ball bearings 6, combined needle roller / cylindrical roller thrust ...