Abstract: Avane actuating arm (10) for a turbomachine, the vane actuating arm (10) including two legs (12) which are pivotable relative to each between at least one open position and a closed position and form a clamping device having at least one clamping surface (14) on each of the legs (12). In the closed position, a vane stem (20) provided for varying the pitch of a stator vane of the turbomachine can be frictionally held between the two legs (12) via the two clamping surfaces (14), forming a clamping connection (16). Each of the legs (12) has an opening (50), the openings (50) overlapping each other in the closed position such that a through-bolt connectable to an actuating element of the turbomachine for controlling an angular position of the vane stem (20) can be passed through the openings (50).

Abstract: Described is a heat-protection element (50) for a gas turbine (10), in particular an aircraft gas turbine, the heat-protection element (50) being adapted to at least partially surround a bearing chamber (60) of the gas turbine (10) and having at least one connecting portion (52) which is disposed in an axially forward region (VB) and connectable or connected by a material-to-material bond to a protective element (54) of a seal carrier, in particular a seal carrier with a carbon seal, at least one supporting portion (58) which is disposed in an axially central region (MB) and adapted to support the heat-protection element (50) radially on the bearing chamber (60), an end portion (64) which is disposed in an axially rearward region (HB) and forms a free end (66) of the heat-protection element (50) and which is configured such that the end portion surrounds (64) the bearing chamber (60) in a contactless manner.

Abstract: A bearing chamber housing (20) for bearing a shaft (3) of a turbomachine (1), including a housing outer shell (21) that delimits an oil chamber (33) of the bearing chamber housing (20) radially outwardly in relation to a rotational axis (4) of the shaft (3), and a housing inner shell (22) for bearing the shaft (3). The housing inner shell (22) is radially connected to the housing outer shell (21) via support ribs (23) that in each case extend axially, at least in part, and the housing inner shell (22), the housing outer shell (21), and two support ribs (23) that are next-adjacent to one another jointly delimit a cavity (41) that is axially open at the rear, and thus lead into a rear opening (32). The rear opening (32), viewed in tangential sections, has a clearance (35) in each case that constitutes at least 50% of a circumferential distance (43) between the next-adjacent support ribs (23).