MAN B&W NA-Series

Produced from the 1980s to 2015 for engines from 2,000 kW up to 25,000 kW and beyond, with pressure ratios up to 4.5:1, NA-Series is MAN's axial heavy fleet legacy: large single-stage axial units built primarily for massive 2-stroke low-speed and large 4-stroke medium-speed main propulsion engines, with internal plain bearings lubricated directly by the engine's own system. The -TO and -S suffixes mark modifications tailored for specific heavy fuel oil operational maps.