A bottling apparatus (200) in aseptic conditions of containers (100) made of a thermoplastic material, comprising: a stretching rod (5) partially located in a contamination-controlled environment (3) isolated from an external environment (4); a linear motor (6) comprising a cylindrical stator (7) and a rotor (8) integrally connected to the stretching rod (5); a first support (107) and a second support (207) for the rotor (8), arranged at opposite ends of the cylindrical stator (7) and integrally connected thereto, in each of the supports (107, 207) at least one passage (707, 807; 107a, 207a) being obtained to allow a sanitising fluid to pass through a separation volume (30) defined between the cylindrical stator (7) and the rotor (8).