• Since there is no oil usage it is an environmentally friendly water lubrication compressor suitable for ISO 14000 certification.
  • Direct-coupling, water lubrication, sealing, and cooling are the best in the class and high efficiency achieves lower maintenance work.
  • Inverters for air-cooling fan motors are loaded as well. Capable of showing power Up energy saving and the superior low noise property.
  • “The newly adopted IT touch panel enables smooth operation and control.”



Model u-140555A-R u-140556A-R
Items Unit
Power frequency Hz 50 60
Power source voltage V 200 200・220
Free air delivery (0.7MPa) m3/min 9.5
Delivered air pressure MPa 0.7
Capacity control method Power-saving AUCS & Automatic start/stop selection
Intake air pressure & temperature Atmospheric pressure  (2~40℃)
Main motor power kW 55
Motor type 3-phase squirrel case、
2P totally enclosed external fan
Starter 3-contactor、star delta start
Drive system Direct drive by coupling
Cooling system Air cooled (separate unit)
Fan motor power kW 7.5 ( Inverter control ) + 0.15 / 0.22
Lubrication water amount L 100
Dryer Air dew point at outlet 10 (under applied pressure)
Refrigerant R-407C
Discharge pipe diameter R 2
W×L×H (body)
[out dryer]
mm 2300[1860]×1200×1500
(Without cooler unit)
Total mass (dry ) kg 1480 (Without cooler unit)
Noise level [OP1.5m] dB・A 69 (Without cooler unit)
EB-unit kW/m3/min 5.79


◎for 55 kW/75 kW air-cooled devices, a separately installed cooler unit(1560×1115×1500(W×L×H)/585 kg(mass)is included in addition to the main unit.
◎Noise values measured in noiseless environment at distance of 1.5 m from front, at height of 1 m, with load of 60 to 100%(at 0.7 MPa)