A transmission with a planetary gearset including planetary gears supported on a carrier, with a disk clutch or brake including a disk carrier which, via an integral cylindrical portion, is fixed to a shaft that supports the disk carrier, such that the carrier rotates on the cylindrical portion and the carrier is supported by a first axial bearing on the disk carrier and a second axial bearing on a sun gear, which engages the planetary gears, and with an oil supply for lubricating and/or cooling bearings, disk clutch and/or brake components. The first axial bearing includes rollers guided in a cage and first check-disk adjacent the carrier and a second check-disk rollers. The first check-disk flanged disk with a section for rollers of the first axial bearing and with a cylindrical section offset from the rolling section.