1，The raceway surface of the seat ring is a spherical surface centered on a point that is consistent with the center axis of the bearing.

2，The rollers of this type of bearing are spherical, therefore, they have automatic self-aligning function and are not very sensitive to coaxiality and shaft deflection. 3，The axial load capacity is very large, and it can withstand several radial loads while also bearing axial loads, but the radial load must not exceed 55% of the axial load.