Oil-injected Rotary Screw Integrated Compressor

Oil-injected Rotary Screw Integrated Compressor
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Features
  • The direct drive oil-injected rotary screw compressor features long-hour stable running, and can offer 24-hour stable compressed air supply.
  • 100% duty cycle;
  • Flexible and quiet operation;
  • Energy saving, cost effective;
  • Long maintenance period, long lifespan;
  • Integrated design, no internal pipes and connectors;
  • 380V/3HP/50HZ power source, IEC standard design;
  • Air cooling structure grants the compressor the ability to work at under 40℃ environmental temperatures. This allows it to run for a full-day.
  • The compressor is equipped with automatic on/off controls, constant speed controller, and relay.
  • The compressor applies maintenance-convenient direct drive structures. There is no need for replacing the belt and other consumable transmission parts.
  • Designed with an air storage tank
Benefits of Direct Drive
  • Efficiency
    The direct drive transmission and gear drive transmission offer 98%-99% of transmission efficiency while the belt transmission offers 94%-98% of efficiency.
  • No load Power Consumption
    The unloaded pressure for compressor with gear drive transmission is over 2.5bar, with some are even up to 4bar. The unloaded pressure for the direct drive and belt transmission can be 0 in theory. This is because the oil absorbed by rotor is enough to lubricate rotor and bearings. For safety, the unloaded pressure of compressor with direct drive and belt transmission is kept around 0.5bar.
  • Pressure changing for installed air compressor
    When the operation conditions change, designed pressure of an installed air compressor might be inappropriate, then we may need to change the pressure of the installed compressor. For a gear drive air compressor, changing its pressure is difficult and expensive; for a direct drive one, it could be easier. For a belt drive one, the work could be very easy. You only need to change pulley and belt to change the pressure of the compressor.
  • Maintenance cost
    All oil-injected rotary screw compressors apply annular shaft seals, which need to be replaced after their lifespan. For direct drive and belt drive compressors, replacing the seal only needs to require the taking off of the coupling or pulley.
    For gear drive compressors, this process is different. When motor or rotor bearing is damaged, related important parts usually get damaged directly or indirectly. That issue doesn’t exist for direct drive or belt drive air compressors.
Technical Parameters
Model JF-10AT JF-15AT JF-20AT
Pressure 0.8Mpa
Displacement Volume(FAD) 1 .05m³/min 1.52m³/min 2.3m³/min
Total Package Input Power 8.78kw/m³/min 7.98kw/m³/min 8.71kw/m³/min
Cooling Method Air Cooling
Outlet Temperature ±12℃ (ambient temperature)
Motor Power 7.5kw 11kw 15kw
Motor Speed 1470r/min 2900r/min 2920r/min
Power Supply 380V/3PH/50HZ
Motor Starting Method Direct on-line Starting Y-△ Starting
Insulation Class of Main Motor F
Protection Level of Main Motor Ip54 IP23/lp54 IP23/IP54
Applicable Temperature Range -5~ 450℃
Transmission Direct Drive
Noise Level 62±2dB(A) 64 ± 2dB(A) 66 ± 2dB(A)
Oil Content in a Compressed Air ≤3ppm
Coolant Capacity 4.5L/compressor 9L/compressor
Air Tank 130L 145L 150L
Air Outlet Size G½'' G¾''
Weight About 275kg About 450kg About 480kg
Dimensions 1000x700x1270mm 1050x750x1400mm 1050x750x1380mm
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