LR209NPP Track Roller Bearing 45x90x19mmLR209NPP Track Roller Bearing Single Row Design Sealed Ball Bearing 45mm ID x 90mm OD x 19mm Width This LR209NPP Track Roller is a single row sealed track roller bearing made for guiding, supporting, or tracking loads along a rail or cam. It's designed to roll smooth and handle both radial and axial forces with ease. Sealed design helps keep grease in and contaminants out Inner diameter: 45mm Outer diameter: 90mm Width: 19mm Load rating (CW): 22,400 N