25x52x15 mm FLT 1205 self-aligning ball bearing with two rows of balls compensates minor shaft-to-housing misalignment. It is intended mainly for radial loads and limited axial loads in both directions.
25x47x15 mm ZKL 51205 thrust ball bearing is designed to carry axial load in one direction. It is used where force acting along the shaft axis must be reliably supported.