250 KW/350 HP Water-cooled Single-stage Screw Industrial air Compressor

A screw-type air compressor that uses a single pair of screw rotors for single-stage compression, operates at a fixed frequency motor speed, and relies on water circulation for cooling.

  • Working Pressure:7~13 [ bar ]101.5~188.5[ psig ]
  • Free Air Delivery:1232~1518[ cfm ]34.9~43[ m3/min ]
  • Working Power:250[ kw ]350[ hp ]

Product Details

RK350W-(19).jpg

Product features

1. Extremely High Cooling Efficiency

Water has a much higher specific heat capacity than air, resulting in excellent heat dissipation. This ensures stable operation 

of the machine in high-temperature environments or under heavy loads, with lower and more consistent exhaust temperatures.

2. Strong Environmental Adaptability

Not limited by on-site ventilation conditions, allowing for more flexible machine room layout. Especially suitable for workshops 

with high dust levels and enclosed environments.

3. Relatively Low Noise

No need for large cooling fans; the main noise comes from the compressor head. The overall operating noise is lower than that 

of air-cooled machines of the same power.

4. Stable Exhaust Quality

Stable low-temperature operation reduces the risk of lubricant aging and carbon buildup, extending the lifespan of the oil and oil filter.

Technical Parameters

Direct Driven Screw Air Compressor
     Model

Air Delivery 

(m3/min)

Power
(kW/hp)
Noise
dB(A)
Outlet
diameter
Dimensions (mm)
Weight
(kg)
7 bar8 bar10 bar13 barL * W * H
RK10A1.3 1.2 1.0 0.7 7.5/1063 G3/4700*600*860180 
RK15A1.8 1.7 1.6 1.0 11/1565 G3/41000*750*1070300 
RK20A2.4 2.3 2.0 1.6 15/2065 G3/41000*750*1070320 
RK30A3.7 3.6 3.2 2.8 22/3068 G11350*850*1120430 
RK40A5.2 5.0 3.9 3.4 30/4068 G11350*800*1110460 
RK50A6.5 6.2 5.6 4.9 37/5069 G1 1/21500*1000*1350650 
RK60A8.0 7.3 6.0 5.9 45/6070 G1 1/21500*1000*1350730 
RK75A10.1 9.5 8.7 7.3 55/7570 G21700*1220*1550950 
RK100A13.6 12.8 11.3 9.2 75/10072 G21700*1200*15501050 
RK125A16.1 15.5 13.6 12.5 90/12572 G22100*1400*16501420 
RK150A21.2 19.6 17.8 15.5 110/15072 DN652500*1650*19002200 
RK220A28.8 27.8 23.0 20.0 160/22072 DN803000*1900*19503650 
RK250A32.5 31.2 27.5 25.8 185/25072 DN803000*1900*19503950 
RK275A34.5 34.0 30.5 28.0 200/27576 DN803000*1900*19504200 
RK300A36.8 35.0 32.0 30.0 220/30076 DN1003600*2200*22004600 
RK350A43.0 41.5 38.0 34.9 250/35076 DN1003600*2200*22005900 
RK375A51.3 50.6 46.0 41.5 280/37582 DN1003600*2200*22006000 
RK420A56.8 55.9 50.1 42.0 315/42082 DN1254600*2300*24307800 
RK420W56.8 55.9 50.1 42.0 315/42082 DN1254200*2300*24307500 
RK475A66.1 65.4 55.1 46.0 355/47585 DN1254600*2300*24308200 
RK475W66.1 65.4 55.1 46.0 355/47582 DN1254200*2300*24307900