This insert ball bearing carries a hardened steel eccentric locking collar arrangement, transferring radial load between a shaft and a housing while allowing the inner ring to be fixed onto the shaft. Bore diameter is 20.0 mm, outside diameter 47.0 mm, width 31.0 mm, and net mass is 0.154 kg. The seal type is KRR, a two-sided contact seal integrated on both sides of the outer ring. The KRR sealing protects the raceway and rolling elements from dust and moisture ingress and retains the grease fill inside the bearing, so no external relubrication interval needs to be planned under normal conditions. The design suits mounting on shafting where the inner ring is clamped through an eccentric collar, keeping axial and radial positioning stable once the collar is tightened. Standard internal clearance and running accuracy apply, matching general radial insert ball bearing construction with no flanged outer ring.