LR5307NPP Track Roller 2-Row Bearing 35x90x34.9mmLR5307NPP Double Row Track Roller Bearing 35mm x 90mm x 34. 9mm Rubber Sealed The LR5307NPP is a heavy duty double row ball bearing designed for track guided motion and cam driven systems. With a sealed design and wide contact surface, its perfect for high load applications like conveyors, guide rails, and automated machinery where durability and stability are a must. Type: Double row track roller bearing Inner Diameter: 35mm Outer Diameter: 90mm