German publication no. DE 10 2012 206 443 A1 (Biermann et al.) discloses a planetary gear differential transmission for a motor vehicle, the planetary gear differential transmission comprising a driving gear, by means of which the torque can be introduced into the transmission; comprising a first output member and a second output member, by means of which the torque can be outputted from the transmission; comprising a differential cage, which is designed to transmit the torque from the driving gear to the first output member, wherein the differential cage is attached to the driving gear in a rotationally fixed manner; and the first output member is arranged in such a way that it can be rotated in relation to the differential cage; and comprising a rolling bearing with a bearing shell, which is attached to the differential cage in a rotationally fixed manner.
For example, DE 10 2011 085 119 B3 (Martini et al.), discloses differential transmissions. Thus, this document discloses a spur gear differential, comprising a planetary gear carrier and two sun gears, which can be rotated relative to the planetary gear carrier, at least one friction disk and at least one spring means, which biases the sun gears relative to the planetary gear carrier. The spring means is spring-mounted, on the one hand, against a sun gear or the planetary gear carrier and, on the other hand, against an axial bearing. The geometrical and functional features, which are disclosed in DE 10 2011 085 119 B3 (Martini et al.), shall be incorporated by reference in its entirety.