Fixed-speed drive. Optional touchscreen.
Choose the standard button controller or specify a touchscreen controller. The fixed-speed SJ configuration has no inverter.
MATEOU / PRODUCT SERIES
SJ SeriesFixed-Speed Screw Air Compressors
Fixed-speed screw compressors
Single-stage, fixed-speed screw compression with a Jiangtian high-efficiency asynchronous motor, IP55 protection and no inverter. A button controller is standard; a touchscreen controller is available as an option.
Motor power7.5–75 kW
Models with listed specifications9
SJ MODEL SPECIFICATIONS
Compare the models.
Find your configuration.
Select a model to view its specifications on this page. The comparison shows air delivery at 8 bar. Open a model to compare all listed pressures and configurations.
9 modelsSelect View specs to expand model details ↓
| Model | Motor power | Air delivery8 bar | Air outlet | DimensionsL × W × H / mm | ||||||||||||||||||||||||||||||
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| 7.5 kW | 1.1 m³/min38.8 CFM0.9 m³/min31.8 CFM0.8 m³/min28.3 CFM | G 1/2 | 900 × 600 × 850 | |||||||||||||||||||||||||||||||
SJ-10A / Full specificationsSELECTED MODEL SJ-10A7.5 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 11 kW | 1.7 m³/min60 CFM1.6 m³/min56.5 CFM1.1 m³/min38.8 CFM | G 3/4 | 1040 × 700 × 1000 | |||||||||||||||||||||||||||||||
SJ-15A / Full specificationsSELECTED MODEL SJ-15A11 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 15 kW | 2.4 m³/min84.8 CFM2.1 m³/min74.2 CFM1.7 m³/min60 CFM | G 3/4 | 1040 × 700 × 1000 | |||||||||||||||||||||||||||||||
SJ-20A / Full specificationsSELECTED MODEL SJ-20A15 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 22 kW | 3.6 m³/min127.1 CFM3.5 m³/min123.6 CFM2.7 m³/min95.3 CFM | G 1 | 1300 × 790 × 1175 | |||||||||||||||||||||||||||||||
SJ-30A / Full specificationsSELECTED MODEL SJ-30A22 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 30 kW | 5.0 m³/min176.6 CFM3.5 m³/min123.6 CFM3.3 m³/min116.5 CFM | G 1 | 1300 × 790 × 1175 | |||||||||||||||||||||||||||||||
SJ-40A / Full specificationsSELECTED MODEL SJ-40A30 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 37 kW | 6.2 m³/min219 CFM5.0 m³/min176.6 CFM4.8 m³/min169.5 CFM | G 1 1/2 | 1400 × 950 × 1320 | |||||||||||||||||||||||||||||||
SJ-50A / Full specificationsSELECTED MODEL SJ-50A37 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 45 kW | 7.1 m³/min250.7 CFM5.8 m³/min204.8 CFM5.6 m³/min197.8 CFM | G 1 1/2 | 1400 × 950 × 1320 | |||||||||||||||||||||||||||||||
SJ-60A / Full specificationsSELECTED MODEL SJ-60A45 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 55 kW | 9.3 m³/min328.4 CFM6.9 m³/min243.7 CFM6.7 m³/min236.6 CFM | G 2 | 1750 × 1170 × 1600 | |||||||||||||||||||||||||||||||
SJ-75A / Full specificationsSELECTED MODEL SJ-75A55 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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| 75 kW | 12.2 m³/min430.8 CFM9.2 m³/min324.9 CFM9.0 m³/min317.8 CFM | G 2 | 1750 × 1170 × 1600 | |||||||||||||||||||||||||||||||
SJ-100A / Full specificationsSELECTED MODEL SJ-100A75 kW / Fixed-speed asynchronous motor screw compressor
Air delivery is the compressor output rating at the stated working pressure. Compare values on the same reference basis. CFM and psi are unit conversions from the listed metric values.
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Listed specifications are reference values for series comparison. Compare air delivery at the same working pressure; final appearance, dimensions and components are confirmed with your quotation.
INSTALLATION REFERENCES
Compressed-air installations
Standalone air stations, integrated compressor packages and separate air-treatment installations.
Compressor, refrigerated dryer and air receivers
Indoor compressor and air-treatment system
Industrial air station with receiver storage
Compressor and separate air receiver
Unbranded installation references supplied for layout illustration. These photographs do not represent MATEOU-branded customer projects. Equipment may belong to different series.
SERIES OVERVIEW
Fixed-speed screw compression for a defined production duty.
The SJ series is a direct-driven, fixed-speed rotary screw air compressor. A shaft coupling connects the screw airend to a Jiangtian asynchronous motor with IP55 protection. It has no inverter. A button controller is standard, with an optional touchscreen controller.
Size the compressor using the air-delivery value at the required pressure. In a fixed-speed installation, receiver capacity and the pattern of loading and unloading are important parts of the selection. A motor-power label by itself is not enough to compare two machines or to confirm that either will meet a production line demand.
Separate treatment and storage
A standalone layout lets you place the receiver and dryer where they fit the workshop. Check the full air flow, operating pressure and inlet temperature when selecting downstream equipment.
Configuration for your site
Confirm BAOSI airend specification, IP55 motor protection, voltage and frequency before order. Plan ventilation, electrical supply, pipe connections and service access around the actual equipment dimensions.
Thick enclosure panels and acoustic insulation
Our enclosure panels are made from thick material conforming to Chinese national standards. The rigid panels help reduce resonance and provide stable support for the enclosure. Internal thermal and acoustic insulation lining helps reduce operating noise.
Application considerations
Consider SJ equipment for general industrial pneumatic duties and established air systems with a clear demand profile. Where demand changes substantially during the day, compare a permanent magnet VSD configuration as part of the same project review.
SELECTION & SUPPORT
Let us help you
configure the system.
Share your working pressure, air demand, operating hours, electrical supply and installation conditions. We can review the model, motor protection, cooling and air-treatment configuration for your enquiry.
MATEOU offers a two-year equipment warranty. Applicable coverage and terms are confirmed in the quotation and order documents.
COMMON QUESTIONS
More detail before you decide.
When should I compare fixed speed with VSD?
Compare them when production demand varies or there are long periods of light air use. The choice should reflect the actual load and operating schedule, together with purchase and operating costs.
Does a standalone SJ compressor include a dryer?
Air treatment and receiver storage are specified separately for the standalone system. Confirm the equipment scope in the quotation, or consider an integrated SZ package if you want the functions combined.
What data should I send for a replacement project?
Provide the current compressor nameplate, operating pressure, known airflow, running hours and any dryer or receiver already installed. Explain whether production capacity is increasing.
Which motor-protection configuration is supplied?
The displayed SJ series is supplied with IP55 motor protection for overseas projects. Confirm voltage, frequency and installation conditions with your equipment quotation.
Can SJ be supplied with a touchscreen controller?
Yes. A touchscreen controller is available as an option in place of the standard button controller. Specify the required control configuration with your enquiry.