OIL-FREE

Oil-Free Screw Compressor

ZW-Series

ZW

Eco-friendly compressor that only use water instead of oil
Installation of MITSUI SEIKI’s SINGLE SCREW AIREND
High reliability as the airend has been supplied to all of the world for over 30 years since 1982
High purity of the compressed air, never use oil
Silent drive by low-speed rotation
The optimized appearance, performance, and design to improve the air quality and energy saving

inside MITSUI SEIKI AIREND

Specifications

ZW-AIREND

Compression process

12 times rotation = After air suction, 6 homes of screw rotor and each gate rotor and blade (6×2)
Well-balanced rotation as the above pictures, only the axial weight exists at the screw rotor spindle