In a series of planetary transmissions, the series including a least one size, each size including at least two variants, the planetary transmission including at least one planetary-transmission stage, which contains at least one planetary-gear carrier having a web face, and planets, a sun, and a ring gear, the planetary-gear carrier including bores of a first type and bores of a second type on its web face, the bores of the first type being arranged on a first circle having a first radius with respect to the imaginary axis of the planetary-gear carrier, and the bores of the second type being arranged on a second circle having a second radius with respect to the imaginary axis of the planetary-gear carrier.