11504

The 11500 series self - aligning ball bearings have a double - row design with a spherical outer ring raceway. The center of the spherical curvature of the outer ring coincides with the bearing center, enabling self - alignment up to 2 - 4 degrees. Made of high - carbon chrome steel, with a pressed steel cage, they can bear low to medium radial loads and low thrust loads. They are suitable for applications where the shaft is prone to misalignment, such as in some transmission shafts.

Metral：

Good self - aligning ability, which can compensate for the angular misalignment of the shaft relative to the housing.
Low - friction operation, as the friction is smaller than that of roller bearings, and the temperature is not easy to rise at high speeds.
Non - separable structure, which is convenient for installation and maintenance.