EP-CMW6.0-1.2 Oil-Free Scroll Air Compressor
The EP-CMW6.0-1.2 is an 8 HP dual-scroll oil-free air compressor delivering 420 L/min at pressures up to 1.2 MPa — a compact mid-range solution combining whisper-quiet 52 dB(A) operation with Class 0 oil-free air purity for laboratories, medical facilities, and precision manufacturing environments.
EP-CMW6.0-1.2 | 8 HP Dual-Scroll Oil-Free Compressor — Ultra-Quiet at 52 dB(A), Up to 1.2 MPa
There is a class of industrial applications where noise is as much a constraint as air purity — dental surgeries, analytical laboratories, electronics testing bays, and hospital imaging suites where a compressor humming at 65 dB would be as disruptive as it would be inappropriate. The EP-CMW6.0-1.2 oil-free scroll air compressor was engineered precisely for these environments. At a measured operational noise level of just 52 ±3 dB(A) — quieter than a typical conversation — it delivers 420 L/min of certified Class 0 oil-free compressed air at pressures up to 1.2 MPa, all from a compact footprint of 800 × 650 × 1020 mm.
The machine's dual-scroll architecture pairs two 3 kW permanent magnet scroll air-ends within a single acoustically dampened enclosure. Beyond the performance figures, this configuration provides the operational security of built-in redundancy: neither air-end is a single point of failure, and intelligent PLC load-sharing means neither unit accumulates disproportionate runtime. For facilities that need clean, quiet, and dependable compressed air — and cannot tolerate the downtime or contamination risk of conventional lubricated equipment — the EP-CMW6.0-1.2 delivers a solution that is structurally oil-free, not just filter-certified.
Visit our full oil-free compressor range to compare the EP-CMW6.0-1.2 against other CMW series configurations and find the optimal model for your flow and pressure requirements.
Technical Specifications at a Glance
| Parameter | Specification |
|---|---|
| Model | EP-CMW6.0-1.2 |
| Motor Power | 3 × 2 kW | 8 HP |
| Working Pressure | 0.2 – 1.2 MPa (adjustable) |
| Free Air Delivery (FAD) | 420 L/min |
| Noise Level | 52 ±3 dB(A) — Ultra-quiet |
| Discharge Connection | 1/2 inch |
| Weight | 150 kg |
| Dimensions (L×W×H) | 800 × 650 × 1020 mm |
| Number of Air-Ends | 2 × scroll air-ends (dual) |
| Drive Type | Direct-drive permanent magnet inverter |
| Motor Protection | IP65 / Class F insulation / Efficiency ≥94% |
| Air Filter Precision | 1 μm |
| Internal Piping | Stainless steel throughout |
| Air-End Warranty | 2 years |
Oil-Free Scroll Compression: Why It Matters at 1.2 MPa
The scroll compression cycle in the EP-CMW6.0-1.2 begins at the outer periphery of each air-end, where atmospheric air is drawn into the crescent-shaped compression chambers formed between the stationary stator scroll and the orbiting rotor scroll. As the rotor follows its orbital path — it does not spin, it orbits — the chambers progressively contract, compressing the trapped air continuously until it reaches the central discharge port and exits at the target working pressure.
The critical engineering achievement in this process is that the two scroll elements maintain a small, carefully calibrated clearance at all times. No metallic contact occurs during normal operation, which means no lubrication is required in the compression zone. The compressed air that emerges is genuinely oil-free at the source — not cleaned downstream by filters that may degrade over time or bypass under surge conditions. This is the structural difference between true oil-free scroll technology and oil-flooded compressors equipped with multi-stage filtration systems.
At 1.2 MPa, the high-rigidity square-frame air-end design — exclusive to Ever Power's CMW series — ensures that the precision clearance between scroll elements is maintained even under maximum pressure loads. Conventional scroll compressors typically cannot sustain structural integrity beyond 0.8–1.0 MPa; the EP-CMW6.0-1.2 extends this ceiling to 1.2 MPa through a patented stiffness-enhanced scroll geometry, making it a genuine 1.2 MPa performer rather than a compressor derated to operate below its structural limit.
What Sets the EP-CMW6.0-1.2 Apart
🔔 Industry-Leading 52 dB(A) Noise Floor
At 52 ±3 dB(A), the EP-CMW6.0-1.2 operates at approximately the ambient level of a quiet office. This is achieved through the inherent smoothness of the scroll orbital motion (no piston reciprocation, no valve clatter), the direct-drive motor connection (no belt slap, no coupling resonance), and a purpose-engineered acoustic enclosure with high-density sound-absorbing inner panels. The result is a machine that can share a room with people without hearing protection requirements.
⚡ Dual PM Motor Direct Drive
Both scroll air-ends are individually coupled to dedicated permanent magnet inverter motors rated at IE4 efficiency class, IP65 environmental protection, and Class F thermal insulation. The VSD soft-start function eliminates current inrush at startup — no spikes on facility electrical circuits — while the inverter continuously adjusts motor speed to track demand, recovering energy that fixed-speed motors waste as heat during partial-load operation.
📋 Intelligent PLC with Dual Air-End Management
The PLC controller displays real-time discharge temperature, system pressure, individual air-end operating status, run-hour counters, and preventive maintenance reminders on a clear LCD panel. It automatically rotates master and slave roles between the two air-ends to equalize wear, and provides fault alarm notifications with diagnostic codes — enabling rapid response without specialist maintenance personnel on site.
🌞 Low Discharge Temperature = Low Dew Point
Each scroll air-end is cooled by an independent fan that maintains discharge air temperatures close to ambient conditions. This inherently low thermal output minimizes condensation formation in the compressed air network and keeps the pressure dew point naturally low — reducing the moisture load on any downstream refrigerated or desiccant dryer and extending dryer service intervals.
⛔ Zero Oil Consumption, Zero Discharge
No lubricating oil enters the compression circuit at any point. Consequently, no oil-contaminated condensate is produced and no oil-water separator is required. This zero-discharge design simplifies facility environmental compliance, eliminates hazardous waste disposal costs, and removes the risk of downstream product contamination from lubricant carryover — a critical advantage in food-adjacent and pharmaceutical production environments.
🔧 Minimal Consumable Cost
The only consumables are the 1 μm precision intake filter elements and the scroll tip-seal sealing rings — both inexpensive, quick-change components. Annual bearing greasing requires less than 15 minutes and no specialized tools. There are no oil filters, no coalescer cartridges, and no activated carbon beds to budget for at any service interval. Total cost of ownership over a five-year period is dramatically lower than equivalent oil-flooded compressor installations.
Individual Air-End Set: OEM Flexibility
The EP-CMW6.0-1.2's scroll air-end modules are available separately as individual air-end sets for OEM applications. Each standalone module combines the scroll compression element, direct-drive permanent magnet motor, cooling fan, and stainless steel outlet connection into a self-contained assembly. At 52 dB(A) and with zero oil requirements, these air-end sets are particularly well-suited for integration into precision machine tools, dental unit chairs, laboratory analytical instruments, and portable compressed air systems where space, noise, and contamination are the primary design constraints.
Where the EP-CMW6.0-1.2 Excels: Target Applications
| Application Environment | Primary Benefit | Pressure Used |
|---|---|---|
| Dental Clinics & Hospital Dental Depts. | 52 dB(A) — unobtrusive beside treatment chairs | 0.6–0.8 MPa |
| Analytical & Research Laboratories | Class 0 oil-free — no interference with test results | 0.5–1.2 MPa |
| Electronics Component Testing | Zero oil vapour — eliminates test fixture contamination | 0.4–0.8 MPa |
| Precision CNC Machine Tools | High-pressure clean air for spindle cooling & air purge | 0.8–1.2 MPa |
| Cosmetics & Fine Chemical Production | Contamination-free packaging and mixing air | 0.6–1.0 MPa |
| Craft Brewing & Artisan Food Production | HACCP-compliant oil-free air for small-batch operations | 0.5–0.8 MPa |
Manufacturing Quality & Warranty Commitment
Every EP-CMW6.0-1.2 unit is assembled, calibrated, and tested in Ever Power's dedicated compressor production facility. Pre-shipment quality checks include full-load pressure performance measurement at all working pressure setpoints across the 0.2–1.2 MPa range, acoustic measurement at rated load, PLC control logic verification for both air-ends' start/stop and rotation functions, and leak testing of all stainless steel connections. The two-year air-end warranty reflects the manufacturing precision invested in every scroll pair — and our confidence that the EP-CMW6.0-1.2 will deliver the operational life that sensitive application environments require.
Customer Case Studies
🇦🇺 Australia — Multi-Chair Dental Practice Network
Industry: Dental Healthcare | Application: Central compressed air supply for six dental treatment chairs
"We replaced our aging piston compressor — which patients could hear clearly from the waiting room — with the EP-CMW6.0-1.2. The 52 dB noise level genuinely surprised us; our practice manager had to physically check the machine was running during the first week. The dual air-end design also means we no longer have anxiety about a compressor failure mid-procedure. Eighteen months in, zero unplanned downtime."
★★★★★
🇬🇧 United Kingdom — University Analytical Chemistry Laboratory
Industry: Academic Research | Application: Zero-grade carrier gas supply for GC and LC-MS instruments
"Our LC-MS instruments require strictly oil-free carrier gas — a single contamination event can destroy a column and invalidate weeks of research data. The EP-CMW6.0-1.2 was specified after our instrument supplier confirmed its Class 0 oil-free output meets the instrument vendor's air quality specification. The quiet operation is a secondary benefit we didn't fully anticipate — it has made the instrument room a genuinely comfortable working environment."
★★★★★
🇨🇴 Colombia — Artisan Cosmetics Manufacturer
Industry: Cosmetics & Fine Chemicals | Application: Oil-free air for pneumatic filling lines and clean-room pressurisation
"Our product line includes skin-care formulations that are marketed as pure and contaminant-free. The previous compressor's oil carryover created periodic batch rejection issues. Since installing the EP-CMW6.0-1.2, we have had zero oil-related batch failures. The machine is compact enough to fit inside our existing utility room, and the 1.2 MPa pressure capability gives us headroom for future production line upgrades."
★★★★★
Frequently Asked Questions
Bring Quiet, Clean Air to Your Sensitive Application
Dental practices, research laboratories, cosmetics producers, and electronics facilities across Australia, the UK, Colombia, and 30+ markets rely on Ever Power oil-free scroll compressors for noise-sensitive, contamination-critical operations. Our technical sales team can confirm technical fit with your application within 24 hours and provide a tailored quotation.
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