215SF is self lubricated bearing (bearing is already greased)
The 608-2RS is a high-performance deep groove ball bearing equipped with silicon nitride (Si3N4) ceramic balls and rubber seals on both sides
S6009-2RS Stainless Steel Sealed Ball Bearing
31230-52020 Nachi Self-Aligning Clutch-Release Bearing
UCFA201 Adjustable Flange Cartridge Unit
Wholesale 1000-Pack 6000ZZ Ball Bearing Inner Diameter - 155mm 215SF is self lubricated bearing6000ZZ Deep Groove Ball Bearings Wholesale Lot of 1000 10mm x 26mm x 8mm, Shielded This wholesale lot includes 1000 pieces of 6000ZZ deep groove ball bearings, ideal for large scale manufacturing, repair shops, and distributors. Each bearing features chrome steel construction, double metal shields, and high speed performance for handy use across electric motors, tools, and machinery. Type: Single row deep groove ball bearing Inner diameter (ID): 10mm