This insert ball bearing carries a cylindrical outer ring combined with a steel aligning ring, allowing the outer ring to self-align in a housing while the bore remains fixed on the shaft. Bore diameter is 40.0 mm, outside diameter 90.0 mm, and net mass is 0.6 kg. P seals are fitted on both sides, closing the bearing off from the surrounding environment. The steel aligning ring compensates for slight misalignment between the housing bore and the shaft, which simplifies mounting where perfect axial alignment cannot be guaranteed. Sealing on both sides retains the internal lubricant and keeps contaminants out, supporting maintenance-reduced operation once the initial grease fill is in place. The cylindrical outer ring locates directly in a bore without a locating collar, so mounting relies on the housing fit rather than a flanged shoulder.