Oil lubrication type
ZV large series – ZV100AS2i
ZV large series Inverter – ZV100AS2i
Z-screw is unique, simple and efficient compression mechanism. Z-screw is composed of 1 main screw and 2 gate rotors located at both side. This simple construction enables low rotation efficient compression with low noise, low vibration and long bearing life. Mitsui Seiki have been providing this mechanism since 1972.