Drive component, photosensitive drum unit, processing cartridge, and imaging device

A drive component (4), a photosensitive drum unit (5), a processing cartridge (1), and an imaging device. The drive component (4) comprises: a drive portion (40), and a telescopic member for controlling the drive portion (40) to axially extend or retract, and further comprises an adaptive adjustment part. The adaptive adjustment part automatically adjusts, in an installation process of the drive portion (40), whether the drive portion (40) needs to rotate around an axis of the drive portion (40). The drive component (4), the photosensitive drum unit (5), the processing cartridge (1), and the imaging device can solve the technical problem that the printing quality is poor because it cannot be ensured that an axis of a rotating component in rotation is coaxial with an axis of the drive component.