SEIZE AIR Dry Oil-Free - Two-stage - Inverter Air Compressor

In manufacturing industries that require absolutely clean, oil-free compressed air and continuous operation, choosing the right compressor technology is a critical factor. The SEIZE dry oil-free air compressor – two-stage compression – inverter series is a premium solution that combines dry oil-free screw technology, two-stage compression, with advanced inverter controldelivering 100% pure compressed air, superior energy efficiency, and high operational stability for modern manufacturing plants.

SEIZE SEIZE is a Sino-German joint venture, established in Shanghai in 2009, focusing on the research, development, and production of energy-saving air compressor technology. We are a world-leading manufacturer of energy-efficient air compressors.

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SEIZE

Overview of SEIZE oil-free, two-stage dry-type air compressors.

The SEIZE dry oil-free air compressor belongs to the Dry Oil-Free Screw Air Compressorcategory, in which the compression chamber operates without the use of oil or water.The twin screw rotors are manufactured with high precision and coated with a special anti-wear layer, ensuring an absolutely clean compression process.

This series is developed by SEIZE and is SEIZEsuch as:

  • Pharmaceuticals and medical applications
  • Food & Beverage Industry
  • Electronics – Semiconductors
  • Pure chemicals
  • Laboratories and high-tech industries

The application of two-stage compression technology combined with inverter control allows the system to outperform conventional single-stage oil-free compressors in terms of both efficiency and durability.

Dual-stage compression and inverter technology – A core advantage.

Two-Stage Compression Technology

The compressed air is ompressed through two consecutive stages instead of a single stage, which provides several advantages:

  • Reduced compression ratio at each stage
  • Reduce the heat generated during the compression process.
  • Improved volumetric efficiency
  • Extending the lifespan of the compressor head.

Compared to single-stage compressors, two-stage compression technology can save approximately 10–15% energy and provide more stable operation under high-load conditions.

Inverter Technology (Variable Frequency Drive)

The inverter system enables:

  • Adjusts motor speed according to actual air demand.
  • Reducing energy consumption under low-load conditions
  • Reducing the number of start/stop cycles
  • Extending the service life of the motor and electrical system

The combination of two-stage compression + inverter technology creates a high-efficiency, energy-saving, and long-term stable compressed air solution..

Typical Technical Specifications of the SEIZE Dry Oil-Free Air Compressor

The specification table below is for reference purposes, presented in a clear structured format, which is a factor highly valued by Google in structured data.

Specifications

Detail

Brand Seize Air
Origin CHINA
Capacity 5.5 – 250 kW
Flow 0.65 – 45 m³/minutes
Product type Single-stage Z-axis flooded high-efficiency air compressor
Control type Inverter – Magnetic Motor
Lubrication type No oil
Cooling type Air cooling/Water cooling
SpecificationsDetail
BrandSeize Air
OriginCHINA
Capacity5.5 – 250 kW
Flow0.65 – 45 m3/phuˊt
Product typeSingle-stage Z-axis flooded high-efficiency air compressor
Control typeInverter – Magnetic Motor
Lubrication typeNo oil
Cooling typeAir cooling/Water cooling

 

 

Thông số kỹ thuật

Specifications

ModelSWT-37W/ASWT-45W/ASWT-55W/ASWT-75W/A
Pressure (bar)78781078107810
(psig)102116102116145102116145102116145
Air Output (m³/min)5.65.66.56.55.58.58.46.512.612.610.3
(cfm)179.9179.7229.5229.5194.2300.1296.5229.5444.844.8363.6
EGT (°C)≤47
Power (KW)37455575
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN50DN80
Weight (kg)2200230024002600
Dimension L (mm)24003200
Dimension W (mm)16701950
Dimension H (mm)16602150
Air CoolingOutlet PipeDN50DN50
Weight (kg)2300240025002700
Dimension L (mm)30503450
Dimension W (mm)17001800
Dimension H (mm)17001850
ModelSWT-90W/ASWT-110W/ASWT-132W/ASWT-160W/A
Pressure (bar)7810781078107810
Pressure (psig)102116145102116145102116145102116145
Air Output (m³/min)15.21512.52019.81524.52219.5272524
Air Output (cfm)529.5526.6441.3706698.9529.5864.9776.6688.4953.1882.5847.2
EGT (°C)≤47
Power (KW) 90110132160
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN80DN80DN80DN80DN80
Weight (kg)28003800300040004200
DimensionL (mm)32003350320033503350
W (mm)19501900195019001900
H (mm)21501900215019001900
Air CoolingOutlet PipeDN50DN80DN50DN80DN80
Weight (kg)29004000310042004400
DimensionL (mm)34504250345042504250
W (mm)18002000180020002000
H (mm)18502200185022002200
Note: The external dimensions of the air cooling system are slightly different from the sample, please refer to the actual dimensions on the external drawing.

 

 

Thông số kỹ thuật

Specifications

ModelSWT-185W/ASWT-200W/ASWT-250W/A
Pressure (bar)781078107810
(psig)102116145102116145102116145
Air Output (m³/min)30.530.526.536.536.530.342.542.536
cfm1076.71076.7935.51288.51288.51069.61500.31500.31270.8
EGT (°C)≤47
Power (KW)185200250
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN100/DN80DN80DN100/DN80DN100DN100/DN80
Weight(kg)5500/540044005800/570064006200/6100
DimensionL (mm)3850/368033503850/368041003850/3680
W (mm)2100/202019002150/202021502150/2020
H (mm)2250/235019002250/235025002250/2350
Air CoolingOutlet PipeDN80DN80DN80DN80
Weight(kg)5700460059006500
DimensionL (mm)4550425045504550
W (mm)2200200022002200
H (mm)2300220023002300
ModelSWT-280WSWT-300WSWT-355W
Pressure (bar)781078107810
psig102116145102116145102116145
Air Output (m³/min)53.548.54258.5534863.85853
cfm1888.61712.11482.62047.41870.91694.42252.12047.41870.9
EGT (°C)≤47
Power (KW)280300355
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN100DN100DN100DN100
Weight(kg)8200660085009000
Dimension L (mm)4450410044504450
W (mm)2350215023502350
H (mm)2350250023502350
Note: The external dimensions of the air cooling system are slightly different from the sample, please refer to the actual dimensions on the external drawing.
Thông số kỹ thuật

Specifications

The Permanent Conversion Technical Parameters
ModelSWT-37WV/AVSWT-45WV/AV
Pressure (bar)4.55.56.57.58.54.55.56.57.58.510.5
psig658094109123658094109123152
Air Output (m³/min)7.36.65.95.65.698.57.36.86.55.6
(cfm)257.7233208.3197.7197.7317.7300.1257.7240229.5197.7
EGT (°C)≤47
Power (KW)3745
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN50
Weight(kg)22002300
Dimension L (mm)2440
W (mm)1670
H (mm)1660
Air CoolingOutlet PipeDN50
Weight(kg)23002400
DimensionL (mm)3050
W (mm)1700
H (mm)1700
ModelSWT-55WV/AVSWT-75WV/AV
Pressure (bar)4.55.56.57.58.510.54.55.56.57.58.510.5
psig658094109123152658094109123152
Air Output (m³/min)1110.29.48.88.47.21614.51412.812.810
(cfm)388.3360.1331.8310.6296.5254.2564.8511.9494.2451.8451.8353
EGT (°C)≤47
Power (KW)5575
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN80DN50DN80
Weight(kg)250024002600
DimensionL (mm)320024003200
W (mm)195016701950
H (mm)215016602150
Air CoolingOutlet PipeDN50DN50DN50
Weight(kg)260025002700
DimensionL (mm)345029003450
W (mm)180017001800
H (mm)185018901850
Note: The external dimensions of the air cooling system are slightly different from the sample, please refer to the actual dimensions on the external drawing.
Thông số kỹ thuật

Specifications

THE PERMANENT CONVERSION TECHNICAL PARAMETERS
ModelSWT-90WV/AVSWT-110WV/AV
Pressure (bar)4.55.56.57.58.510.54.55.56.57.58.5
psig658094109123152658094109123
Air Output (m³/min)19.117.5171614.212.525.523.22120.818.3
cfm674.2617.8600.1564.8501.3441.3900.2819741.3734.2646
EGT (°C)≤47
Power (KW)90110
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN80DN80
Weight (kg)28003800
DimensionL (mm)32003350
W (mm)19501900
H (mm)21501900
Air CoolingOutlet PipeDN50DN80
Weight (kg)29004000
DimensionL (mm)34504250
W (mm)18002000
H (mm)18502200
ModelSWT-132WV/AVSWT-160WV/AV
Pressure (bar)4.55.56.57.58.510.54.55.56.57.58.510.5
psig658094109123152658094109123152
Air Output (m³/min)28.526.524.2242220393432.52826.524
cfm1006.1935.5854.3847.2776.67061376.71200.21147.3988.4935.5847.2
EGT (°C)≤47
Power (KW)132160
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN80DN100/DN80DN80
Weight(kg)400052004200
DimensionL(mm)335038503350
W(mm)190021501900
H(mm)190022501900
Air CoolingOutlet PipeDN80DN80DN80
Weight(kg)420055004400
DimensionL(mm)425045504250
W(mm)200022002000
H(mm)220023002200
Note: The external dimensions of the air cooling system are slightly different from the sample, please refer to the actual dimensions on the external drawing.
Thông số kỹ thuật

Specifications

ModelSWT-185WV/AVSWT-200WV/AV
Pressure (bar)4.55.56.57.58.510.54.55.56.57.58.510.5
psig658094109123152658094109123152
Air Output (m³/min)43.54138.534322845.543.5413836.530.5
cfm1535.61447.31359.11200.21129.6988.41606.21535.61447.31341.41288.51076.7
EGT (°C)≤47
Power (KW)185200
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN100DN100/DN80DN100DN100DN100/DN80
Weight(kg)55005500/5400600058005000/5700
DimensionL(mm)38503850/3680410038503850/3680
W(mm)21502150/2020215021502150/2020
H(mm)22502250/2350250022502250/2350
Air CoolingOutlet PipeDN80DN100DN80
Weight(kg)570076005900
DimensionL(mm)455052504550
W(mm)220025002200
H(mm)230024502300
ModelSWT-220WV/AVSWT-250WV/AV
Pressure (bar)4.55.56.57.58.510.54.55.56.57.58.510.5
psig658094109123152658094109123152
Air Output (m³/min)5145.543.240.5383261.55450454338
cfm1800.31606.215251429.71341.41129.621711900.217651588.51517.91341.4
EGT (°C)≤47
Power (KW)220250
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN100DN100DN100DN100/DN80DN100DN100DN100/DN80
Weight(kg)7800620060006000/5900800064006200/6100
DimensionL(mm)4450410038503850/3680445041003850/3680
W(mm)2350215021502150/2020235021502150/2020
H(mm)2350250022502250/2350235025002250/2350
Air CoolingOutlet PipeDN100DN100DN100DN80
Weight(kg)7800620080006500
DimensionL(mm)5250455052504550
W(mm)2500220024502200
H(mm)2450230023502300
(Note): The external dimensions of the air cooling system are slightly different from the sample, please refer to the actual dimensions on the external drawing.
Thông số kỹ thuật

Specifications

The Permanent Conversion Technical Parameters
ModelSWT-280WSWT-300WV
Pressure (bar)4.55.56.57.58.510.55.56.57.58.510.5
psig6580941091231528094109123152
Air Output (m³/min)6961.556494542.56765595548
cfm2435.721711976.81729.71588.51500.32365.12294.52082.71941.51694.4
EGT (°C)≤47
Power (KW)280300
Voltage Frequency (V/Hz)380/50
Water CoolingOutlet PipeDN100DN100DN100
Weight(kg)820066008500
DimensionL(mm)445041004450
W(mm)235021502350
H(mm)235022502350
ModelSWT-355WV
Pressure (bar)6.57.58.510.5
psig94109123152
Air Output (m³/min)69666055
cfm2435.72329.821181941.5
EGT (°C)≤47
Power (KW)355
Voltage Frequency (V/Hz)380/50
Outlet PipeDN100
Weight (kg)9000
Water CoolingDimensionL(mm)4450
W(mm)2350
H(mm)2350
Note: The external dimensions of the air cooling system are slightly different from the sample, please refer to the actual dimensions on the external drawing.

Driven by a Permanent Magnet Variable Frequency Motor

  • The SWT oil-free air compressor is equipped with a variable speed inverter and a Hybrid Permanent Magnet motor (HPM®), delivering exceptional energy efficiency at all operating speeds along with excellent reliability.
  • It provides 100% oil-free compressed air certified to ISO 8573-1:2010 Class 0, suitable for most critical applications.
  • There are no wearing components such as motor bearings, guide wheels, belts, couplings, or motor shaft seals that require frequent replacement, eliminating issues related to wear or leakage.
  • SEIZE helps reduce operating costs through its dynamic energy efficiency, representing a truly remarkable technological solution.

Intercooler Equipped with an Air-Water Separator to Protect the High-Pressure Rotor Coating

A high-capacity CYCLONE-type air-water separator is used to remove condensed moisture from the compressed air, protecting the second-stage rotor, extending the service life of the main motor, and providing a suitable operating environment for the compressor.

Near-Zero Pressure Loss in the Intercooler

A stainless steel cooler is used, and the air side incorporates a three-baffle design to deliver excellent cooling performance while significantly reducing air pressure loss.

The main housing of the dry oil-free screw compressor adopts an oil-cooling method

The closed-loop water circuit used to cool the main motor can achieve a continuously low temperature level, which means fewer gearboxes are required. The two-stage main airend design with larger throughput can reliably provide 100% oil-free compression and operate close to isothermal conditions. This is mainly due to the continuously low temperature, which allows the compressor to be used in demanding applications with ambient temperatures up to 52°C.

Components with long service life are designed to withstand ambient temperatures up to 52°C. Stable rotors, a reliable large gear drive system, ultra-durable coating using advanced international technology, a durable bearing system, stainless steel gas seals, and a uniquely designed labyrinth seal.

Low Failure Rate and Easy Maintenance

PLC-based controller editing: The controller uses a PLC that has been proven through decades of practical applications. It features strong anti-interference capability, reliable operation, a low failure rate, easy operation, simple installation, convenient system expansion, and built-in self-diagnosis functions, making maintenance easier.

Equipped with a large LCD display, providing clear and convenient operation. When the air compressor requires maintenance or encounters a malfunction, the screen will automatically issue an alarm to remind users to perform maintenance or troubleshoot in a timely manner.

Extended lubricant replacement intervals: The industry-leading SEIZE Super lubricant provides a lubricant service life of up to 10,000 hours, which is 8 times longer than conventional lubricants.

Key Advantages of the SEIZE Dry Oil-Free Air Compressor

  • Absolutely clean compressed air – 0 ppm oil
  • Certified ISO Class 0 for demanding industries
  • Outstanding energy savings thanks to two-stage compression and inverter technology
  • High stability during continuous 24/7 operation
  • Reduced costs for air treatment and downstream system maintenance
  • Environmentally friendly with no waste oil

Practical applications

In practical deployment at manufacturing plants:

  • Pharmaceutical and medical industries use compressed air for drug production and medical equipment manufacturing
  • Electronics and semiconductor industries use clean air for precision component assembly
  • Premium food industries use it for sterile packaging processes

According to feedback from operating engineers, the SEIZE two-stage oil-free compressor series demonstrates very high stability, noticeably reduced electricity consumption, and lower risks in quality compliance inspections..

Guide to Selecting the Right SEIZE Oil-Free Air Compressor

Businesses should determine:

  • Required air flow rate (m³/min)
  • Required working pressure
  • Compressed air purity standard (ISO Class)
  • Operating time/day

Choosing the right configuration helps optimize investment efficiency and operating costs.

Installation & Operation Instructions

  • Install in a clean, well-ventilated compressor room
  • Ensure the cooling system is operating efficiently.
  • Use appropriate air dryers and filters to meet the required air quality standards
  • Perform periodic maintenance according to technical recommendations

Frequently Asked Questions (FAQ)

1. Is the SEIZE dry series air compressor truly oil-free?
Yes. The compressed air contains 0 ppm oil and meets ISO Class 0 standards.

2. What is the difference between two-stage and single-stage compression?
Two-stage compression offers higher efficiency, better energy savings, and longer durability.

3. How much energy can the inverter save?
It can save approximately 20–35% of energy consumption, depending on the load conditions.

4. Is it suitable for continuous 24/7 operation?
It is fully suitable for continuous 24/7 operation.

Why Choose SEIZE Oil-Free Air Compressors from Phuc Hung?

  • Extensive implementation experience in high-standard clean compressed air systems
  • Consultation based on the right technology, actual needs, and budget
  • Supply of genuine SEIZE products
  • Transparent installation, warranty, and technical support services

Are you looking for a SEIZE dry oil-free two-stage inverter air compressor for a production line that requires absolutely clean compressed air?
👉 Contact carried out maintenance and oil sludge (varnish) removal for for in-depth technical consultation, assistance in selecting the right configuration, and to receive the most optimized quotation for your factory.