This is a square-flanged bearing unit with a spherical inner ring and a pressed-steel housing. It supports a rotating shaft and accommodates minor misalignment between the shaft and the mounting surface. The housing bolts to a flat frame member, and the bearing's set-screw locking collar secures it to the shaft. A worn or loose bearing produces radial play and shaft wobble, which can accelerate seal wear on the connected implement. The unit is a direct replacement for the original FAG assembly and uses the same housing-bolt pattern and shaft diameter as the component it replaces. When installing, tighten the set screws to the specified torque and ensure the shaft rotates freely before locking the collar.