LR5307NPPU Track Roller 2-Row Bearing 35x90x34.9mmLR5307NPPU Double Row Track Roller Bearing 35mm x 90mm x 34. 9mm Sealed, Heavy Duty The LR5307NPPU is a double row track roller bearing designed for heavy duty linear motion and support in cam driven systems, material handling tracks, and conveyor applications. With two rows of balls and built in seals, this bearing provides excellent load capacity and protection in high pressure environments. Type: Double row track roller bearing Inner Diameter: 35mm