TRANSMISSION UNIT, IN PARTICULAR AN AXLE DRIVE OR TRANSFER CASE, HAVING A TRANSMISSION ELEMENT MOUNTED THEREIN VIA AT LEAST ONE DOUBLE-ROW ANGULAR CONTACT BALL BEARING

A transmission unit includes a transmission housing, a transmission element rotatably accommodated in the transmission housing, a bearing seat, and an angular contact ball bearing accommodated in the bearing seat, for mounting the transmission element, as well as a double-row angular contact ball bearing having: an inner bearing ring; a first inner concave rolling element raceway formed in an outer peripheral region of the inner bearing ring; a second inner concave rolling element raceway axially offset to the first inner rolling element raceway and formed in the outer peripheral region of the inner bearing ring; an outer bearing ring; a first outer concave rolling element raceway formed in an inner peripheral region of the outer bearing ring; a second outer concave rolling element raceway axially offset to the first outer rolling element raceway and formed in the outer bearing ring; a first ball-cage assembly with first balls which are accommodated in a first track space extending between the first inner rolling element raceway and the first outer rolling element raceway; and a second ball-cage assembly with second balls which are accommodated in a second track space extending between the second inner rolling element track and the second outer rolling element track. In this way, the central tracks of the two ball-cage assemblies adopt certain axial and radial relative positions.