• 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-140555W-R u-140556W-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 driving by coupling
Cooling system Water cooled
Fan motor power kW 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
Total mass (dry ) kg 1530
Noise level [OP1.5m] dB・A 65


◎Noise values measured in a noiseless environment at a distance of 1.5 m from the front, at height of 1 m, with a load of 60 to 100%(at 0.7 MPa)
◎Cooling water volume (water temp. 32℃)150ℓ/min