This insert ball bearing carries a spherical outer ring surface, allowing it to seat and self-align within a housing while the inner ring is secured to the shaft by means of an adapter sleeve. The outside diameter measures 52.0 mm, the width is 23.0 mm, and the net mass is 0.25 kg. Sealing is provided on both sides by 2RSR seals, protecting the internal raceways and rolling elements from contamination. The spherical outer ring combined with adapter sleeve mounting permits fitting anywhere along the shaft length without requiring a stepped shaft, simplifying alignment during installation and compensating for minor angular misalignment. The double-sided 2RSR sealing retains internal lubrication and restricts ingress of dust and moisture, supporting operation without frequent relubrication intervals.