Abstract: A bearing lubrication system for a turbomachine having a lubrication chamber which defines a lubrication space surrounding the bearings has lubricant feeding devices for supplying lubricant to the lubrication space, a lubricant removing device for removing lubricant from the lubrication space, and a buffer case surrounding the lubrication chamber, that is located in the fluid space of the turbomachine, and defines a buffer space communicating with the atmosphere. Shaft contact seals are provided between the buffer case and the fluid space, and shaft seals are provided between the buffer space and the lubrication space.