This insert ball bearing carries radial load through a cylindrical outer ring fitted with a steel aligning ring, allowing the outer ring to self-align in the housing. The inner ring is secured to the shaft by an eccentric locking collar, and P seals are fitted on both sides to keep the bearing enclosed. Bore diameter is 20.0 mm, outside diameter 55.0 mm, width 31.5 mm, and net mass is 0.25 kg. The steel aligning ring compensates for slight angular misalignment between the housing bore and the shaft, so the bearing can be mounted without requiring precise axial alignment of the supports. Locking is achieved through the eccentric collar, which clamps the inner ring to the shaft without the need for a separate shaft shoulder. The double-sided P seals restrict entry of dust and moisture, keeping the internal grease fill protected during operation. This design suits applications where shaft support units are assembled with a plain cylindrical outer ring and simple radial mounting.