Roller, spherical roller bearing with double row 1 share spherical raceway outer ring, inner ring have 2 race and relative bearing axis tilted at an Angle. This ingenious structure make it with automatic self-aligning properties, and therefore susceptible to shaft and bearing box seat Angle error or the influence of shaft bending, suitable for installation error or shaft deflection caused by the Angle error of the occasion. The bearing besides can bear radial load, also can withstand the two-way axial load.

Self-aligning roller bearing inside hole has two kinds of cylindrical and conical, conical taper hole taper for 1:30 and 1:12 two kinds, the conical bore bearing with set or withdrawal sets, the conical bore self-aligning ball bearing can be conveniently and quickly assembled on the optical axis or ladder machine shaft.