Electric 3 HP 2.2 kW Oil-Free Air Compressor with Dryer, 3.7 kW 5 HP Scroll Air Compressor AC Powered

Why the Electric 2.2 kW (3 HP) and 3.7 kW (5 HP) AC-Powered Oil-Free Scroll Compressors with Integrated Dryer Define Point-of-Use Clean Air

When dental operatories, medical examination rooms, pharmaceutical laboratories, food packaging benches, analytical instrument stations, and electric vehicle pneumatic systems demand genuine ISO 8573-1 Class 0 oil-free air​ in a compact, low-noise, plug-and-go footprint, the engineering world converges on a single architecture: the AC-powered oil-free scroll compressor in the 2.2 kW (3 HP) and 3.7 kW (5 HP) power classes with an integrated refrigeration dryer. These units harness the scroll principle — an orbiting spiral element meshing with a fixed spiral housing — to compress air without a drop of oil entering the compression chamber. Coupled to a premium-efficiency AC motor, they deliver 215–415 L/min (0.215–0.415 m³/min) of 100% oil-free air at 8–10 bar​ while operating at noise levels as low as 49±3 dB(A), with a built-in dryer achieving a pressure dew point of +3°C.

The 2.2 kW and 3.7 kW tiers with integrated drying represent the definitive entry point into true oil-free compressed air with built-in air treatment. They are powerful enough to drive 1–4 dental chairs, a single laboratory instrument cluster, a small medical air station, or a precision pneumatic production cell​ — yet compact and quiet enough for installation directly inside treatment rooms, laboratory benches, medical technical closets, and mobile platforms. The AC-powered motor paired with a direct-drive or belt-drive transmission eliminates oil from the air stream entirely, transferring motor power to the scroll air-end with minimal loss, minimal vibration, and minimal maintenance.

Available across working pressures of 8 bar and 10 bar (116–145 psi), configured as stationary or mobile oil-free rotary scroll units with AC power input, the 2.2 kW and 3.7 kW compressors with integrated dryers achieve reliable intermittent to continuous operation​ with only an air filter and a tip seal as consumables across their service life — making them the definitive solution for facilities where air purity, acoustic comfort, energy efficiency, and maintenance simplicity are simultaneously non-negotiable.

Verified Technical Specifications: 2.2 kW (3 HP) and 3.7 kW (5 HP) AC-Powered Oil-Free Scroll Compressors with Integrated Dryer

All-in-One Integrated Configuration (Standard for "with Dryer" Models):

• Component 1:​ 2.2 kW or 3.7 kW AC-powered oil-free scroll compressor — 100% oil-free by structural design

• Component 2:​ Built-in refrigerated air dryer — pressure dew point +3°C

• Component 3:​ 3-stage precision filtration — particulate + activated carbon (5-stage for medical: gas-water separation, dust removal, oil removal, high-precision, bacterial/sterilization)

• Component 4:​ Air receiver tank (40L standard; 80L/200L/300L/500L options)

The Scroll Compression Principle: Achieving 100% Oil-Free Air by Structural Design

The scroll compressor achieves oil-free operation through a fundamentally different mechanism than piston or screw compressors:

1. Two spiral elements per head:​ One fixed scroll (stator) housed in the stationary casing and one orbiting scroll (rotor) mesh together with micron-level precision

2. Orbital motion:​ The orbiting scroll moves in a controlled eccentric path driven by the motor shaft — it does NOT rotate on its own axis, but orbits around the center

3. Progressive compression:​ Air is sucked into the space between the orbiting and stationary scrolls; the crescent-shaped compression chamber gradually decreases in volume as the orbiting scroll moves, squeezing the air toward the center

4. No metal-to-metal contact:​ A simple tip seal design ensures no lubrication is required in the compression chamber — the technology does not require lubrication

5. Central discharge:​ The compressed air is discharged from the exhaust port at the center of the fixed scroll housing

Because no oil enters the compression chamber at any stage, the compressed air is 100% oil-free by structural design​ — achieving ISO 8573-1 Class 0 certification (oil content ≤0.01 mg/m³ or ≤0.01 ppm) without downstream oil-removal filtration. This is the highest air purity standard available and is mandatory for dental, medical, pharmaceutical, and laboratory applications.

AC-Powered Electric Drive: The Industrial Standard for Reliable Operation

The 2.2 kW and 3.7 kW oil-free scroll compressors are built around a robust AC induction motor platform:

Universal AC Power Compatibility:​ The units operate on standard 3-phase AC power (380V/50Hz as standard), with customization available for 220V, 110V, 415V, 440V, 460V, and 50/60Hz configurations worldwide. This universal AC compatibility makes them deployable in virtually any industrial, commercial, or clinical facility globally.

IE3 Premium Efficiency:​ The AC motor meets IE3 premium efficiency class as standard, with IE4 permanent magnet (PM) VSD optional for applications requiring variable speed control. The PM VSD configuration delivers soft start with no current impact, automatically adjusting motor speed to match air demand — saving energy and extending service life.

Direct Drive or Belt Drive Options:​

• Direct-drive configuration:​ Motor shaft rigidly coupled to scroll air-end — eliminates belts, pulleys, and couplings; 100% power transfer; 49±3 dB(A) noise; minimal maintenance

• Belt-drive configuration:​ Optimized scroll mechanism uses belt transmission — 32% less power with 5% higher cooling capacity; suitable for applications where drive flexibility is prioritized

IP67 Protection, F-Class Insulation:​ The AC motor features IP67 ingress protection and F-class insulation, ensuring reliable operation in dusty, humid, and thermally demanding environments. The motor is designed for continuous duty in ambient temperatures up to 45°C.

Individual Cooling Fan per Air-End:​ Each scroll air-end is equipped with its own dedicated cooling fan, ensuring low discharge air temperature and optimal pressure dew point performance. This individual cooling approach improves overall system efficiency by more than 30% compared to conventional compressor cooling systems.

The Integrated Dryer Advantage: Plug-and-Go Clean Dry Air

The defining feature of the "with dryer" configuration is the built-in refrigerated air dryer and precision filtration stack:

Built-In Refrigerated Dryer:

The integrated refrigeration dryer achieves a pressure dew point of +3°C, directly meeting general air needs without requiring separately purchased downstream equipment. This eliminates the complexity, cost, and space requirements of external drying systems.

3-Stage Precision Filtration:

The integrated filtration train eliminates dust, water aerosol, and residual vapor:

• Stage 1:​ Particulate filtration — removes solid contaminants

• Stage 2:​ Coalescing filtration — removes water and oil aerosols

• Stage 3:​ Activated carbon filtration — adsorbs vapor-phase contaminants

For medical and pharmaceutical applications, a 5-stage filtration​ option adds gas-water separation, oil removal, high-precision filtration, and bacterial/sterilization filtration to meet the strictest purity requirements.

Space-Saving Integrated Design:

By integrating the compressor, dryer, air receiver, and filter into a single compact unit, the system saves significant floor space and allows for ready-to-use installation. The integrated design reduces on-site installation time to under half a day for most facility layouts.

Elimination of Downstream Pressure Drop:

The integrated dryer is designed to minimize pressure drop across the drying and filtration system, eliminating the extra energy costs typically incurred to combat pressure drop across separately installed filters. This reduces total cost of ownership in three ways: (1) no expensive standalone filter replacements, (2) no oil condensate treatment costs, and (3) no extra energy costs to overcome filter pressure drop.

Application Sweet Spot: Where 2.2 kW and 3.7 kW AC-Powered Scroll Compressors with Dryer Excel

Capacity Planning Reference:

• 2.2 kW / 3 HP:​ 215–320 L/min at 8 bar — serves 1–3 dental chairs, a single laboratory instrument cluster, or a small medical air station

• 3.7 kW / 5 HP:​ 400–415 L/min at 8 bar — serves 4–6 dental chairs, multiple laboratory analyzers, or a medium medical air station

Duty Cycle Note:​ The 2.2 kW and 3.7 kW AC-powered units are rated for intermittent operation as standard. For continuous 24/7 duty, industrial-grade scroll configurations or multi-head configurations are recommended. AC-powered scroll compressors can run at 100% duty cycle at 10 bar with very long lifetime in industrial-grade configurations.

Energy Efficiency: AC Drive with 20–30% Savings Versus Piston Compressors

The 2.2 kW and 3.7 kW AC-powered oil-free scroll compressors deliver measurable energy efficiency:

For a 2.2 kW unit running 6,000 hours/year, the scroll technology's 20–30% energy advantage versus an equivalent piston compressor delivers substantial electricity cost reduction. The 100,000+ hour core component lifespan further reduces lifecycle cost — far exceeding the 30,000–50,000 hours typical of piston compressors.

Installation and Site Requirements

The stationary configuration with vibration-dampening rubber feet requires no poured concrete foundation. For integrated configurations with built-in dryer, a single power connection and a single air outlet are all that is required — installation time is reduced to under half a day. The compact footprint allows the unit to fit through a standard doorway, enabling point-of-use installation directly inside dental operatories, laboratory rooms, medical technical closets, and mobile platforms.

Maintenance: The "Nearly Maintenance-Free" Promise

Oil-free scroll compressors have the simplest maintenance profile of any compressor technology:

Annual maintenance cost:​ With only the air filter as the primary consumable, the 2.2 kW and 3.7 kW scroll compressors achieve exceptionally long maintenance-free operation. There are no oil changes, no oil separator replacements, no belt replacements (for direct-drive variants), and no oil-laden condensate disposal under hazardous waste regulations. The simple structure has 1/9 the parts of a piston compressor — only one moving part (the orbiting scroll) means minimal wear and minimal replacement needs. This delivers 40–60% lower annual maintenance costs​ compared to an equivalent oil-flooded machine.

Comparison to piston compressors:​ A piston compressor has many moving parts — pistons rise and fall, causing excessive vibration and noise, short service lifetime (30,000–50,000 hours), and frequent maintenance. The scroll compressor's single moving part (orbiting scroll) with no metal-to-metal contact delivers 100,000+ hours of core component life with hardly any maintenance.

Frequently Asked Questions

What exactly is a 2.2 kW (3 HP) or 3.7 kW (5 HP) AC-powered oil-free scroll air compressor with dryer?

It is a stationary or mobile rotary scroll compressor that uses two precision-machined spiral elements (fixed + orbiting scrolls) to compress air without any oil in the compression chamber. Powered by a 2.2 kW (3 HP) or 3.7 kW (5 HP) AC induction motor under PLC control, the unit integrates a built-in refrigerated air dryer (pressure dew point +3°C) and 3-stage precision filtration. The 2.2 kW unit delivers 215–320 L/min of 100% oil-free air at 8 bar; the 3.7 kW unit delivers 400–415 L/min at 8 bar. Both achieve working pressures of 8 or 10 bar. The absence of oil throughout the entire system achieves genuine ISO 8573-1 Class 0 certification (oil content ≤0.01 mg/m³ or ≤0.01 ppm) by structural design — not by downstream filtration.

What is the typical Free Air Delivery (FAD) at 8 bar for these units?

The 2.2 kW (3 HP) AC-powered oil-free scroll compressor delivers 215–320 L/min (0.215–0.32 m³/min; 7.6–11.3 CFM) at 8 bar. At 10 bar, FAD reduces to 210–240 L/min. The 3.7 kW (5 HP) unit delivers 400–415 L/min (0.40–0.415 m³/min; 14.1–14.7 CFM) at 8 bar, reducing to 340–350 L/min at 10 bar. These capacities comfortably serve 1–3 dental chairs (2.2 kW) or 4–6 dental chairs (3.7 kW), along with laboratory analyzers, medical devices, and small industrial pneumatic stations.

Why is AC power the standard for these oil-free scroll compressors?

AC power provides universal compatibility and reliable operation in industrial, commercial, and clinical facilities worldwide. The units operate on standard 3-phase AC power (380V/50Hz as standard), with customization available for 220V, 110V, 415V, 440V, 460V, and 50/60Hz configurations. The AC induction motor meets IE3 premium efficiency class, with IE4 PM VSD optional for variable speed control. This AC platform delivers 20–30% better energy efficiency than piston compressors while maintaining the robustness required for continuous industrial duty.

Why is oil-free operation mandatory for dental and medical applications?

Regulatory bodies and industry standards require dental and medical air delivery systems to maintain oil content ≤0.01 mg/m³ — the exact threshold of ISO 8573-1 Class 0. Oil-lubricated compressors cannot guarantee this standard even with multi-stage filtration, risking composite bonding failure, infection control violations from aerosolized oil particles, and handpiece damage. In medical facilities, medical air requirements demand oil-free air for breathing. Oil-free scroll compressors provide this assurance by structural design — no oil in the compression chamber at any stage — without the complexity of oil-lubricated compressors with downstream purification.

Why do I need the integrated dryer, and what dew point does it achieve?

Compressed air naturally contains water vapor that condenses as the air cools, leading to pipe corrosion, instrument damage, and product contamination. The integrated refrigerated dryer achieves a pressure dew point of +3°C, directly meeting general air needs without requiring separately purchased downstream equipment. The 3-stage precision filtration (particulate + activated carbon) eliminates dust, water aerosol, and residual vapor. For medical and pharmaceutical applications, a 5-stage filtration option adds bacterial/sterilization filtration to meet the strictest purity requirements. This integrated stack simplifies installation and compliance documentation while eliminating the extra energy costs typically incurred to combat pressure drop across separately installed filters.

What noise level can I expect, and is it suitable for point-of-use installation?

The 2.2 kW AC-powered oil-free scroll compressor operates at 49±3 dB(A); the 3.7 kW unit operates at 49±3 to 55±2 dB(A). These noise levels are achieved through four mechanisms: (1) The direct-drive or optimized belt-drive transmission eliminates belt noise; (2) The orbiting scroll's smooth, continuous orbital motion produces minimal torque fluctuation and near-zero vibration; (3) A heavy-duty sound-insulated enclosure with vibration-dampening rubber feet seals and absorbs residual micro-vibrations; (4) No metal-to-metal contact eliminates frictional noise. The result is quieter than a normal conversation, enabling installation directly inside dental operatories, laboratory benches, medical technical closets, and patient areas without dedicated compressor rooms or complex acoustic baffling.

What maintenance is required for a 2.2 kW or 3.7 kW AC-powered oil-free scroll compressor with dryer?

Maintenance is remarkably simple: replace the air intake filter element every 2,500 operating hours or 1 year, inspect the tip seal every 5,000–10,000 hours, check the automatic drain system monthly, and conduct annual PLC controller diagnostics. There are no oil changes, no oil separator replacements, no belt replacements (for direct-drive variants), and no oil-laden condensate disposal under hazardous waste regulations. The scroll compressor's single moving part (orbiting scroll) and the integrated dryer's sealed refrigeration circuit mean minimal intervention is needed. The complete unit carries a 2–5 year warranty, with a 2-year warranty on the airend. Annual maintenance costs are typically 40–60% lower than an equivalent oil-flooded machine.

What is the expected service life of the airend?

The scroll compressor's minimal moving parts and absence of metal-to-metal contact translate to exceptional longevity. The 2.2 kW and 3.7 kW units achieve 100,000+ hours of core component operation​ — far exceeding the 30,000–50,000 hours typical of piston compressors. The AC motor with F-class insulation and IP67 protection is engineered for decades of continuous duty. The airend carries a 2-year warranty. Premium bearings and high-grade components further extend operational life.

Can these units handle full dental clinic and medical facility requirements?

Absolutely. The 2.2 kW and 3.7 kW AC-powered oil-free scroll compressors with integrated dryers are purpose-engineered for demanding healthcare and laboratory environments. The 2.2 kW unit can serve 1–3 dental chairs; the 3.7 kW unit can serve 4–6 dental chairs. Both can supply breathing air for medical examinations, drive surgical and dental instruments, feed laboratory analyzers, support pharmaceutical bench processes, and provide clean dry pneumatic air for food packaging and e-mobility applications. The 100% oil-free air eliminates any risk of oil contamination in breathing air, dental handpieces, medical instruments, or pharmaceutical processes. The ultra-quiet operation (49±3 dB(A)) allows installation directly inside operatories, laboratories, and medical technical closets without acoustic disruption. The built-in dryer ensures +3°C pressure dew point for moisture-free air delivery.

What voltage and electrical configuration is standard?

The 2.2 kW and 3.7 kW stationary AC-powered oil-free scroll compressors operate on 380V/3-phase/50Hz AC power as standard, with customization available for 220V, 110V, 415V, 440V, 460V, and 50/60Hz worldwide. The units use direct online (DOL) starting as standard, with soft-start VSD optional. The AC induction motor features IP67 protection and F-class insulation. The PLC controller manages all electrical protection functions including motor overload, over-temperature, and over-pressure automatic shutdown.

How much energy can I save with an AC-powered oil-free scroll compressor with integrated dryer?

The scroll technology delivers 20–30% energy savings​ compared to an equivalent oil-free piston compressor. The integrated dryer design eliminates the extra energy costs typically incurred to combat pressure drop across separately installed filters. For a 2.2 kW unit running 6,000 hours/year, this translates to substantial electricity cost reduction versus an equivalent piston compressor. The 100,000+ hour core component lifespan further reduces lifecycle cost. Additionally, the elimination of oil changes, oil separator replacements, and oil-laden condensate disposal reduces total cost of ownership by 40–60% compared to oil-flooded machines.

How long does delivery take for a 2.2 kW or 3.7 kW AC-powered oil-free scroll compressor with dryer?

Standard lead time is 15–25 working days for standard voltage configurations. Custom voltage, pressure, tank size, material specifications (e.g., stainless steel pipework, desiccant dryer, BMS integration) require 20–30 working days. Emergency expedited delivery may be available depending on manufacturer capacity. Units are supplied with export plywood box or standard export carton as standard.

Bottom Line for Facility and Procurement Teams

The Electric 2.2 kW (3 HP) and 3.7 kW (5 HP) AC-powered oil-free scroll air compressors with integrated dryer​ represent the definitive solution for small-scale clean dry air applications where genuine Class 0 oil-free air, ultra-low noise, compact footprint, and minimal maintenance are simultaneously required. By combining the scroll compression principle (orbiting and fixed spiral elements with no metal-to-metal contact), a premium-efficiency AC induction motor (IE3 standard, IE4 PM VSD optional), a direct-drive or optimized belt-drive transmission, an intelligent PLC controller, and an integrated refrigerated dryer with 3-stage filtration, this technology simultaneously solves six critical challenges:

1. Achieves 8–10 bar with genuine Class 0 air by design​ — ISO 8573-1 Class 0 certified, oil content ≤0.01 mg/m³ (≤0.01 ppm), zero oil in the entire air path; mandatory for dental, medical, pharmaceutical, and laboratory applications; TÜV Class 0, CE, ISO 9001, SGS compliant

2. Delivers clean dry air with +3°C dew point​ — built-in refrigerated dryer eliminates the need for separately purchased downstream equipment; 3-stage precision filtration removes dust, water aerosol, and vapor; 5-stage medical-grade filtration available

3. AC-powered reliability​ — universal 380V/3-phase/50Hz compatibility (customizable worldwide); IE3 premium efficiency motor; IP67 protection, F-class insulation; individual cooling fan per air-end; 20–30% more energy efficient than piston compressors

4. Ultra-low noise at 49±3 dB(A)​ — direct-drive transmission (no belt noise), smooth orbital scroll motion, acoustic enclosure, vibration-dampening rubber feet; enabling point-of-use installation directly in operatories, laboratories, and medical closets

5. Compact and lightweight​ — 670 × 663 × 945 mm (without tank) or 700 × 500 × 1220 mm (with 40L tank); 132–170 kg; fits through a standard doorway; foundation-free installation

6. Nearly maintenance-free​ — only air filter and tip seal as consumables; 100,000+ hours core component lifespan (4× piston lifetime); 40–60% lower annual maintenance cost vs. oil-flooded machines; 2–5 year unit warranty, 2-year airend warranty

When evaluating your next small-scale clean compressed air investment, prioritize:

1. TÜV Class 0 certification​ — genuine ISO 8573-1 Class 0, oil content ≤0.01 mg/m³ (≤0.01 ppm)

2. FAD at 8 bar: 215–320 L/min (2.2 kW) or 400–415 L/min (3.7 kW)​ — verify the specific model's capacity against your chair count, instrument load, and demand profile

3. Integrated dryer with +3°C dew point​ — built-in refrigerated dryer eliminates external drying equipment; 3-stage or 5-stage filtration included

4. Noise level ≤55 dB(A)​ — direct-drive transmission, low-speed scroll operation, acoustic enclosure, vibration-dampening rubber feet

5. AC power compatibility​ — 380V/3-phase/50Hz standard; customizable to 220V/110V, 415V/440V/460V, 50/60Hz worldwide

6. IE3 motor standard (IE4 PM VSD optional)​ — premium efficiency, IP67 protection, F-class insulation

7. Working pressure 8/10 bar​ — verify the pressure matches your application (dental: 8 bar; laboratory instruments: 8–10 bar; e-mobility: 10 bar)

8. All-in-one integrated option​ — built-in dryer, 3-stage/5-stage filtration, and receiver tank as standard; 40% space and labor savings

9. Application fit​ — 2.2 kW serves 1–3 dental chairs or equivalent load; 3.7 kW serves 4–6 dental chairs or equivalent load; for continuous 24/7 duty, consider industrial-grade or multi-head configurations; for flows above 415 L/min, consider 5.5 kW or 7.5 kW configurations

10. Drive method​ — direct drive for minimal maintenance and 49±3 dB(A) noise; belt drive for 32% less power consumption with 5% higher cooling capacity

A properly specified 2.2 kW or 3.7 kW AC-powered oil-free scroll air compressor with integrated dryer will deliver 100,000+ hours of reliable core component operation, genuine Class 0 oil-free air at ≤0.01 mg/m³ total oil, +3°C pressure dew point, noise levels of 49±3 dB(A), 20–30% energy savings versus piston compressors, and nearly maintenance-free operation — forming the dependable, compliant, ultra-quiet, and intelligently controlled backbone of your small-scale clean dry compressed air operation.

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Electric 3 HP 2.2 kW Oil-Free Air Compressor with Dryer, 3.7 kW 5 HP Scroll Air Compressor AC Powered

Why the Electric 2.2 kW (3 HP) and 3.7 kW (5 HP) AC-Powered Oil-Free Scroll Compressors with Integrated Dryer Define Point-of-Use Clean Air

When dental operatories, medical examination rooms, pharmaceutical laboratories, food packaging benches, analytical instrument stations, and electric vehicle pneumatic systems demand genuine ISO 8573-1 Class 0 oil-free air​ in a compact, low-noise, plug-and-go footprint, the engineering world converges on a single architecture: the AC-powered oil-free scroll compressor in the 2.2 kW (3 HP) and 3.7 kW (5 HP) power classes with an integrated refrigeration dryer. These units harness the scroll principle — an orbiting spiral element meshing with a fixed spiral housing — to compress air without a drop of oil entering the compression chamber. Coupled to a premium-efficiency AC motor, they deliver 215–415 L/min (0.215–0.415 m³/min) of 100% oil-free air at 8–10 bar​ while operating at noise levels as low as 49±3 dB(A), with a built-in dryer achieving a pressure dew point of +3°C.

The 2.2 kW and 3.7 kW tiers with integrated drying represent the definitive entry point into true oil-free compressed air with built-in air treatment. They are powerful enough to drive 1–4 dental chairs, a single laboratory instrument cluster, a small medical air station, or a precision pneumatic production cell​ — yet compact and quiet enough for installation directly inside treatment rooms, laboratory benches, medical technical closets, and mobile platforms. The AC-powered motor paired with a direct-drive or belt-drive transmission eliminates oil from the air stream entirely, transferring motor power to the scroll air-end with minimal loss, minimal vibration, and minimal maintenance.

Available across working pressures of 8 bar and 10 bar (116–145 psi), configured as stationary or mobile oil-free rotary scroll units with AC power input, the 2.2 kW and 3.7 kW compressors with integrated dryers achieve reliable intermittent to continuous operation​ with only an air filter and a tip seal as consumables across their service life — making them the definitive solution for facilities where air purity, acoustic comfort, energy efficiency, and maintenance simplicity are simultaneously non-negotiable.

Verified Technical Specifications: 2.2 kW (3 HP) and 3.7 kW (5 HP) AC-Powered Oil-Free Scroll Compressors with Integrated Dryer

All-in-One Integrated Configuration (Standard for "with Dryer" Models):

• Component 1:​ 2.2 kW or 3.7 kW AC-powered oil-free scroll compressor — 100% oil-free by structural design

• Component 2:​ Built-in refrigerated air dryer — pressure dew point +3°C

• Component 3:​ 3-stage precision filtration — particulate + activated carbon (5-stage for medical: gas-water separation, dust removal, oil removal, high-precision, bacterial/sterilization)

• Component 4:​ Air receiver tank (40L standard; 80L/200L/300L/500L options)

The Scroll Compression Principle: Achieving 100% Oil-Free Air by Structural Design

The scroll compressor achieves oil-free operation through a fundamentally different mechanism than piston or screw compressors:

1. Two spiral elements per head:​ One fixed scroll (stator) housed in the stationary casing and one orbiting scroll (rotor) mesh together with micron-level precision

2. Orbital motion:​ The orbiting scroll moves in a controlled eccentric path driven by the motor shaft — it does NOT rotate on its own axis, but orbits around the center

3. Progressive compression:​ Air is sucked into the space between the orbiting and stationary scrolls; the crescent-shaped compression chamber gradually decreases in volume as the orbiting scroll moves, squeezing the air toward the center

4. No metal-to-metal contact:​ A simple tip seal design ensures no lubrication is required in the compression chamber — the technology does not require lubrication

5. Central discharge:​ The compressed air is discharged from the exhaust port at the center of the fixed scroll housing

Because no oil enters the compression chamber at any stage, the compressed air is 100% oil-free by structural design​ — achieving ISO 8573-1 Class 0 certification (oil content ≤0.01 mg/m³ or ≤0.01 ppm) without downstream oil