Transmission arrangement and drive train with such a transmission arrangement

A transmission arrangement for a drive train of a vehicle, comprising:

• a planetary wheel set having a planetary carrier on which at least one bolt is arranged;
• a first bearing element configured for rotatably mounting a planetary wheel, the first bearing element being arranged on the at least one bolt;
• and
• a differential operatively connected to the planetary carrier and arranged to transmit a drive power acting on the planetary carrier to a first center shaft and to a second center shaft arranged coaxially thereto,
• wherein at least the first center shaft defines a central first channel for supplying coolant and/or lubricant supply to an interior of the differential and defines at least one first bore hole, which extends radially at least in some sections, the at least one first bore hole being formed on the planetary carrier and configured to guide the coolant and/or lubricant out of the interior of the differential into a second channel of the bolt.