The Mono CBA API 611 is designed with a two-stage Curtis steam turbine rotor and has external journal bearings with power capability between 500 and 2000 kW. The industrial steam turbine intended for mechanical-drive applications in the refinery/petrochemical industries also delivers up to 6000 rpm according API 611, with a maximum of 9000 rpm. The applied axial Curtis stage provides efficiency and reliability on other turbine models. The turbine can be engineered as a bare-shaft assembly consisting of turbine rotor, casing and bearings. In the full-package option, the bare-shaft turbine is fitted with a gear and oil lubrication system according to API 677 and API 614 standards, trip and control valves as well as turbine control panel and surveillance systems. The turbine also can be equipped with bearing temperature sensors, shaft vibration and position probes.