In the two-stage cross roller bearing (1), an outer ring concentrically (11), intermediate ring (12), the inner ring (13) is arranged, the outer ring (11) and the outer raceway between the intermediate wheel (12) (14) roller size of the outer roller (15) which is inserted into the roller smaller than the size of the intermediate wheel (12) and the inner ring inner roller which is inserted inside track (16) between (13) (17). Roller center L2 of the inner roller (17) relative to the roller center L1 of the outer roller (15) are offset in the direction of the center axis (1a). In the radial direction of the intermediate wheel (12) the thickness t (12) is at least twice the outer ring radial thickness t of (11) (11). Can be suppressed preload deformation of the intermediate wheel (12) can be realized inside the two-stage cross roller bearing capable ensuring the smooth rotation of the outer roller (15, 17).