On the standard basis, Make more weight for pillow block, More loading, More life, Chrome steel bearing or stainless steel bearing can be fitting of it.

Spherical ball bearing has two rows of spherical balls, the outer race is provided with a common concave spherical raceway, while the inner race is provided with two concave spherical raceways that form an angle with the bearing axis. The curvature center of the outer raceway is consistent with the bearing center.