BR405228UU IKO Machined Needle Roller Bearing - 2.1/2X3.1/4X1.3/4 NJ203ECP/C3SKF The 2RS1 suffix indicates that

The 2RS1 suffix indicates that the bearing is sealed with synthetic rubber (NBR) on both sides

This 594/593x bearing is an imperial taper roller bearing

Wide Series 30mm - Bore Size Increased Capacity Design Solid Window Cage Made From Glass Fibre Reinforced Polyamide PA66 Radial Internal Clearance Larger Than Normal

3/8 DEC Self Lube Cast Iron Pillow Block Unit 1

BR405228UU IKO Machined Needle Roller Bearing - 2.1/2X3.1/4X1.3/4 NJ203ECP/C3SKF The 2RS1 suffix indicates thatThe BR405228UU is an Inch Series, Single Row Machined Needle Roller Bearing with an oil groove and oil hole in the Outer Ring, and 2 Rubber Seals. This Bearing has no Inner Ring, meaning the Needle Rollers are mounted directly onto the shaft. As such, the Bearing has better running accuracy as it isn't affected by assembling an Inner Ring with the shaft. In caged Needle Roller Bearings like this one, the Needles are precisely guided by the Cage to