This insert ball bearing carries radial loads through a spherical outer ring, allowing the housing bore to accommodate slight misalignment while the unit locates on the shaft by means of an adapter sleeve. The outside diameter is 80.0 mm, width 22.0 mm, and net mass 0.518 kg. Sealing on both sides is provided by RSR seals, designated in the symbol as 2RSR. The spherical outer ring geometry gives the bearing self-aligning capability within the housing seat, which simplifies mounting on continuous shafting without requiring precise shaft shoulders, since axial and radial positioning is achieved through the adapter sleeve fixation. The double-sided RSR sealing arrangement protects the internal raceway and ball complement from contamination and retains the internal lubricant, supporting maintenance-reduced operation once the bearing is correctly clamped in place on the sleeve.