SCR Compressor

Permanent Magnetic VSD Screw air compressor PM series

Working Power: 22~75KW(30~100HP)
Free Air Delivery: 0.8~13.3m³/min(28.5~469.7cfm)
Working Pressure: 7/8/10bar(101.5/116/145 psig)

product video

product advantages
  • 1 Down-to-earth investment for the future

    What's important is not initial cost but life cycle cost . INVERTER compressrs may look more expensive than fixed speed model, but many customers choose them because they know importance of life cycle cost & return on investment when it comes to choosing compressors.

    Down-to-earth investment for the future

  • 2 What you pay should be only for what you use

    SCR compressor can adjust compressor's rotating speed depends on the demand of factory load which changes from moment to moment by own developed algorithm. Thus, it can provide exact volume and pressure what customer needs and achieve maximum energy saving.

    Achieve an energy-saving effect under any load operation through wide-range inverter control, wide-range control, and e-STOP function.

    What you pay should be only for what you use

  • 3 Special Dual Housing Oil Cooling Motor

    Permanent Magnet motor adopt dual housing design with IP65 protection grade, there have space left for oil channel between the inner housing and outer housing. It take use of compressor itself lubricant system to cool down motor circularly through its oil channel, no touch with outside cooling air, and more suitable for the dusty environment,  It break through the traditional air cooling motor disadvantage with IP23 or IP54 protection grade.

    Special Dual Housing Oil Cooling Motor

  • 4 Special morse connection

    PM motor rotor is directly mounted on the airend shaft, No gears or belts, no coupling, Zero transmission loss, Easy for installation, No need to make adjustment, Better protection for inner parts of PM motor. There’s no bearing for the PM motor, so motor is 100% free maintenance, Reduce maintenance cost.

    Special morse connection

  • 5 Double Frequency conversion system

    Constant pressure output:
    A significant energy-saving effect can be achieved by constant pressure control Pressure fluctuation can be controlled within士0.01MPa.

    Constant temperature output:
    Normally the temperature is set at 81℃,ensure the best lubrication performances while avoid the sudden stop caused by haigh temperature.

    Double Frequency conversion system

product parts
product details
Permanent Magnet (PM) motor
① Permanent Magnet (PM) motor ● Exceed IE4 standards ● Oil-cooled motor ● variable speed drive ● IP65 protection
New compressor airend
② New compressor airend ● New improved rotor profile ● R&D in Japan ● designed for 10 years* of reliable operation
inlet filter
③ inlet filter ● Nano scale Heavy duty ● filtration accuracy upto 99.9% ● Dust particles below 0.3 micron ● Pressure drop indicator
cooling fan
④ cooling fan ● VSD control ● Compact ● Low noise level ● High capacity for optimized cooling ● Low power consumption
Classic cooler design
⑤ Classic cooler design ● Separate oil/air cooler ● Easy access for maintenance ● Paint anti-corrosion coating on surface ● Over size cooler design
innovative  vectorial inverter
⑥ innovative vectorial inverter ● CE、UL、CUL、ROHS certification ● Meet EMC c3 and C2 requirements ● Independent cooling air duct design ● Robust enclosure for trouble-free operation in the harshest conditions.
Plot® Touch controller
⑦ SCR9000 Touch controller ● 7.0 inch full color touch LCD screen ● Real-time Operation/ Maintenance/ Alarm information ● Operation record/ Chart display ● Weekly timer/Service history and planning
Inlet valve
⑧ Inlet valve ● Optimizes the inlet flow of the air end. ● No blow-off losses / Large suction area ● Full aluminum design: maintenance-free. ● Fast check: prevent unloading and shutdown oil injection
Oil filter
⑨ Oil filter ● Filter the dirts in the lubricated oil reliably ● Oil particles can be controlled at 0.1 micron ● Ensure the smooth and well-lubricating oil system
Built-in separation system
⑩ Oil gas tank & Built-in separation system ● Oversized air and oil tank improves the cyclone effect maximising the seperation process ● The high efficiency oil seperator ensures that the oil carry over is less than 3ppm. ● System pressure loss:less than 0.02Mpa
electrical control cabinet
⑪ electrical control cabinet ● Siemens core electrical components are used to further enhance reliabity.
all-steel internal pipe system
⑫ all-steel internal pipe system ● All steel internal pipe work is used to prevent leakage and premature ageing often seen with flexible pipes ● Less pipe pressure loss
product parameter
Model KW HP Capacity
SCR30PM-7 22 30 1.06-3.7 7 1200*800*1100 450 R 1
SCR30PM-8 1.04-3.6 8
SCR30PM-10 0.8-3.2 10
SCR40PM-7 30 40 1.3-5.2 7 1200*800*1100 480 R 1
SCR40PM-8 1.25-5.0 8
SCR40PM-10 1.1-4.2 10
SCR50PM-7 37 50 1.6-6.4 7 1300*900*1270 610 R1 1/2
SCR50PM-8 1.6-6.3 8
SCR50PM-10 1.4-5.6 10
SCR60PM-7 45 60 1.83-7.3 7 1300*950*1370 650 R1 1/2
SCR60PM-8 1.8-7.2 8
SCR60PM-10 1.8-7.1 10
SCR75PM-7 55 75 2.7-10.2 7 1800*1200*1550 1230 RC 2
SCR75PM-8 2.5-10.1 8
SCR75PM-10 2.1-8.4 10
SCR100PM-7 75 100 3.5-13.3 7 1800*1200*1550 1280 RC 2
SCR100PM-8 3.2-12.9 8
SCR100PM-10 2.9-11.8 10


The capacity is measured as GB3853 standard.(equivalent to ISO1217 Annex C)

Standard voltage is 380V/50HZ/3P, other voltage is available.

The recommended best capacity range is 60%-100%.

Alpine/high altitude, high temperature, high humidity, high dust loads or other adverse working conditions will require specialized custom designs. These are available on special request.

We reserve the right to make changes and improvements to the design and appearance.

Specifications may change without prior notice.

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