This insert ball bearing carries a rubber interliner between the outer ring and the housing seat, allowing it to accommodate shaft misalignment while the eccentric locking collar secures the inner ring on the shaft. Bore diameter is 20.0 mm, outside diameter is 52.3 mm, and net mass is 0.2 kg. P seals fitted on both sides close off the bearing interior from contamination. The rubber interliner compensates for angular misalignment between shaft and housing, reducing edge loading on the balls and races under such conditions. Locking is achieved through the eccentric collar rather than a set screw, which distributes clamping force around the bore and keeps the inner ring centered on the shaft. With seals on both sides, the bearing retains its initial grease fill and resists ingress of dust and moisture, making relubrication intervals longer than with open designs.