EP-CMW2.2-1.0 Oil-Free Scroll Air Compressor
The EP-CMW2.2-1.0 is a 2.2 kW oil-free scroll air compressor producing 215 L/min at up to 1.0 MPa — the ideal compact entry point into the 1.0 MPa pressure class for laboratories, dental facilities, and precision instruments that require clean, higher-pressure air from a quiet, maintenance-minimal unit.
EP-CMW2.2-1.0: Compact 1.0 MPa Oil-Free Scroll Compressor for Precision Instruments and Clinical Environments
The EP-CMW2.2-1.0 oil-free scroll air compressor brings the CMW series into the 1.0 MPa pressure tier at entry-level power. Rated at 2.2 kW (3 HP), it delivers 215 L/min of certified oil-free air at up to 1.0 MPa -- making it the right choice for applications where the additional pressure headroom of 1.0 MPa is necessary but volume requirements remain moderate. At 49 +/- 3 dB(A) and just 670 x 630 x 945 mm (132 kg), this unit is among the most compact 1.0 MPa oil-free compressors available. Its direct-drive permanent magnet motor and precision scroll air-end carry a 2-year warranty. Explore the full EP-CMW product family to compare 1.0 MPa options at all output levels.
The 1.0 MPa working pressure expands the range of compatible equipment compared to 0.8 MPa units -- instruments calibrated for higher actuation pressure, pneumatic tools specified at 0.9-1.0 MPa, and certain spray application equipment operating more efficiently at higher air pressure. The EP-CMW2.2-1.0 provides this capability with the same oil-free architecture that prevents contamination at the compression source, without the additional complexity of high-pressure equipment categories.
Ever Power Engineering Background for the 1.0 MPa Range
Ever Power developed the full CMW pressure range -- from 0.8 MPa through to the world-first 1.2 MPa -- using a single underlying scroll architecture adapted across pressure tiers. The 1.0 MPa CMW models share the high-stiffness square air-end design, direct-drive permanent magnet motor, and stainless steel air path of the 0.8 MPa range, with scroll geometry and tip seal specifications optimised for the higher working pressure. Participation in drafting national standards JB/T 11882-2014 and JB/T 12565-2015 reflects the engineering foundation that supports this full-range capability.
Key Features
1.0 MPa Working Pressure -- Extended Equipment Compatibility
Operating up to 1.0 MPa rather than 0.8 MPa expands the range of pneumatic equipment, spray tools, and instruments that can be supplied from a single compressor without pressure-reducing regulators set at their lowest effective range.
49 dB(A) -- Quietest in the 1.0 MPa Scroll Range
The 2.2 kW direct-drive single-head configuration produces the lowest noise level in the EP-CMW 1.0 MPa range at 49 +/- 3 dB(A) -- suitable for clinical areas, open-plan laboratories, and working environments where acoustic comfort is a requirement.
2.2 kW Permanent Magnet Motor -- IP65, F-class Insulation
The direct-drive permanent magnet motor provides over 94% efficiency with zero belt-related maintenance. IP65 protection makes it suitable for environments with elevated humidity or airborne dust levels.
2-Year Air-End Warranty -- High-Stiffness Square Design
The precision square air-end design maintains scroll geometry integrity at 1.0 MPa working pressure, ensuring consistent volumetric efficiency and tip seal life throughout the 2-year warranty period and beyond.
Intelligent PLC with Fault Alarm and Maintenance Reminder
The built-in PLC displays discharge temperature, working pressure, run hours, and maintenance reminders in real time. Fault alarms with descriptive codes allow rapid identification and response to any abnormal operating condition.
Stainless Steel Outlet and 1 Micron Inlet Filtration
The 1/2-inch stainless steel outlet prevents rust-particle contamination in the air stream. The 1 micron inlet filter protects the scroll mechanism from fine particulate at higher inlet-to-outlet pressure ratios.
Working Principle at 1.0 MPa
The compression process in the EP-CMW2.2-1.0 follows the same scroll orbital mechanics as all CMW models: crescent-shaped air pockets form between the fixed and orbiting scrolls at the periphery, migrate inward as the orbiting scroll traces its circular path, decrease in volume continuously, and discharge at the central port at working pressure. The scroll geometry for the 1.0 MPa model produces a higher compression ratio than the 0.8 MPa variant, achieved through an optimised pocket-to-port path length in the scroll profile design. The tip seals and scroll surface treatment are specified to maintain oil-free sealing integrity at the higher pressure differential throughout the service life of the air-end.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | EP-CMW2.2-1.0 |
| Motor Power | 2.2 kW / 3 HP |
| Working Pressure Range | 0.2 - 1.0 MPa |
| Free Air Delivery (FAD) | 215 L/min |
| Noise Level | 49 +/- 3 dB(A) |
| Outlet Connection | 1/2 inch stainless steel |
| Weight | 132 kg |
| Dimensions L x W x H | 670 x 630 x 945 mm |
| Air-End Warranty | 2 Years |
| Motor Type | Permanent Magnet, IP65, F-class, >94% efficiency |
| Drive | Direct Drive -- no belt, no coupling |
| Inlet Filtration | 1 micron |
| Lubrication | Oil-Free (annual bearing grease) |
Application Areas
| Industry | Application | Benefit |
|---|---|---|
| Dental and Oral Surgery | High-speed handpiece supply, surgical air tools requiring higher pressure | Quietest 1.0 MPa option for patient-occupied clinical spaces |
| Analytical Instrumentation | HPLC, mass spectrometry, instruments requiring 0.9-1.0 MPa supply | Clean air at pressure without noise interfering with sensitive measurements |
| Precision Pneumatic Assembly | Fixtures and tooling calibrated for 1.0 MPa actuation | Consistent pressure without regulator loss at the lower working range |
| Optical and Laser Equipment | Air-bearing tables, laser optics purging, precision stage actuation | Oil-free air at 1.0 MPa for contamination-sensitive optics environments |
| Specialty Coating Applications | Airbrush tools, precision lacquer guns, fine atomisation at higher pressure | Higher pressure enables finer atomisation for precision finish work |
Customer Case Studies
Australia -- Oral and Maxillofacial Surgery Clinic
Upgrading to 1.0 MPa for Surgical Instrument Compatibility
A specialist oral surgery clinic in Brisbane discovered that their new high-speed surgical handpieces and piezoelectric surgical instruments were specified at a minimum inlet pressure of 0.9 MPa -- higher than the 0.8 MPa output of their existing oil-free compressor. The EP-CMW2.2-1.0 provided the required 1.0 MPa headroom while maintaining the 49 dB(A) noise level essential in their surgical suite environment. The clinic's infection control team also confirmed that the genuinely oil-free output simplified their compressed air validation documentation for accreditation purposes.
★★★★★
"The new surgical instruments need 0.9 MPa minimum -- this gives us 1.0 MPa in the same quiet footprint as our old unit. Infection control approved immediately." -- Clinic Director
Netherlands -- Optical Metrology Laboratory
Stable 1.0 MPa Oil-Free Air for Air-Bearing CMM Tables
A Dutch precision engineering laboratory operating coordinate measuring machines with air-bearing tables required a 1.0 MPa compressed air source that was both oil-free and completely pulse-free. Their previous oil-injected compressor with downstream filtration had produced occasional oil misting events that contaminated the air bearings, causing expensive recalibration and bearing replacement. The EP-CMW2.2-1.0 eliminated contamination at the source, and the scroll technology's inherently pulse-free output eliminated the vibration disturbance in air bearings that piston compressors had been causing. CMM measurement repeatability improved measurably after installation.
★★★★★
"No more oil events, no more pulsation affecting bearing stability. Our CMM repeatability numbers improved immediately." -- Metrology Engineer
Canada -- Specialty Coatings Workshop
Fine Atomisation at 1.0 MPa for Furniture Lacquer Application
A Canadian custom furniture workshop producing high-end lacquered pieces required a 1.0 MPa compressed air source for their HVLP spray guns -- their finishers had found that 0.8 MPa was insufficient for the fine atomisation their solvent-based lacquers required at full viscosity. The EP-CMW2.2-1.0 supplied the required pressure while its oil-free output eliminated the fish-eye and silicone-contamination defects they had experienced with their previous oil-injected unit. The workshop also appreciated the low noise level, which allowed finishers to work without hearing protection even when the compressor ran continuously during production shifts.
★★★★
"The pressure headroom makes a visible difference to our atomisation quality, and we haven't had a fish-eye defect since switching." -- Head Finisher
Frequently Asked Questions -- EP-CMW2.2-1.0
What is the practical difference between 0.8 MPa and 1.0 MPa working pressure?
At 0.8 MPa supply, a regulator set to a tool's 0.8 MPa rating operates at its upper limit with no headroom -- pressure variation during compressor cycling causes performance inconsistency at the tool. A 1.0 MPa supply provides 0.2 MPa of headroom above a 0.8 MPa-rated tool, ensuring stable regulated pressure regardless of supply cycling. For tools and instruments specifically rated at 0.9-1.0 MPa, the 1.0 MPa unit is simply the correct supply choice.
Does operating at 1.0 MPa affect the tip seal or air-end maintenance intervals?
No. The EP-CMW2.2-1.0 uses scroll profiles and tip seal materials specified for 1.0 MPa service. Maintenance intervals are identical to the 0.8 MPa models -- annual bearing grease, periodic inlet filter and tip seal replacement based on PLC-logged hours. The 2-year air-end warranty is valid at the full 1.0 MPa working pressure.
Is the 215 L/min output measured at full 1.0 MPa pressure?
Yes. The free air delivery figure of 215 L/min is the actual output at rated working pressure. All EP-CMW FAD figures are measured at the stated maximum working pressure, not at atmospheric conditions or partial pressure.
Can this unit serve multiple instruments or tools at the same time?
Yes, within the total output capacity of 215 L/min. An integrated storage tank buffers demand peaks between individual instrument actuations. The PLC monitors downstream pressure and adjusts compressor operation to maintain supply within the set band across multiple connected devices.
What downstream treatment is recommended for the highest instrument air quality?
For most laboratory and analytical instrument applications, the oil-free output and 1 micron inlet filtration of the EP-CMW2.2-1.0 meet air quality requirements without additional treatment. Where a specific low dew point is required -- chromatography carrier gas or air-bearing supply -- an appropriate inline refrigerated or desiccant dryer should be added downstream of the compressor outlet.
Enquire About the EP-CMW2.2-1.0
The EP-CMW2.2-1.0 is available for technical consultation and direct quotation. Ever Power provides full application support including sizing confirmation, configuration advice, and downstream treatment recommendations. Learn more about Ever Power's engineering and manufacturing credentials or review the full EP-CMW 1.0 MPa range to compare output levels.
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