Custom Reali-Slim TT Series thin section bearings have a proven, four-point contact ball radial design, featuring a single row of balls with a unique gothic arch raceway and brass separators for low frictional torque. Radial, axial and moment load-capable, the bearings are prelubricated and ready for use; simply position the bearings on the mounting face and tighten the mounting screws! They are available with optional internal or external spur gear for ease of drive setup, or with non-geared designs.