EP-CMW13.5-1.2 Oil-Free Scroll Air Compressor
The EP-CMW13.5-1.2 is an 18 HP tri-scroll oil-free air compressor delivering 1080 L/min at up to 1.2 MPa — engineered for high-demand industrial environments where air purity, quiet operation, and zero oil contamination are non-negotiable.
EP-CMW13.5-1.2 | 18 HP Triple-Scroll Oil-Free Air Compressor at 1.2 MPa
When industrial processes demand both high flow capacity and uncompromising air purity at elevated pressure, the EP-CMW13.5-1.2 oil-free scroll air compressor stands apart as a purpose-built solution. Combining three 4.5 kW permanent magnet scroll air-ends in a single integrated enclosure, this 18 HP compressor delivers a free air delivery of 1080 L/min at working pressures up to 1.2 MPa — all without a single drop of lubricating oil entering the compressed air stream.
Unlike conventional rotary screw compressors that depend on oil separation stages to remove contamination, the EP-CMW13.5-1.2 achieves true oil-free compression at the source. The scroll mechanism's contact-free compression geometry means that air quality is structurally guaranteed — not dependent on filtration performance. This makes the unit the preferred choice for electronics fabrication, pharmaceutical-grade processes, food and beverage lines, and any environment where Class 0 oil-free compressed air is a baseline requirement.
The tri-scroll architecture also provides a critical operational advantage: intelligent automatic rotation between master and slave air-ends balances wear across all three units, extending service intervals and making uninterrupted 24/7 operation practical and economical. Backed by Ever Power's two-year air-end warranty and a rigorous quality inspection process, the EP-CMW13.5-1.2 is built to perform reliably wherever production cannot afford contamination-related downtime.
Full Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-CMW13.5-1.2 |
| Motor Power | 4.5 × 3 kW | 18 HP |
| Working Pressure | 0.2 – 1.2 MPa |
| Free Air Delivery (FAD) | 1080 L/min |
| Noise Level | 61 ±3 dB(A) |
| Discharge Connection | 1 inch |
| Weight | 300 kg |
| Dimensions (L×W×H) | 1450 × 900 × 1150 mm |
| Number of Air-Ends | 3 × scroll air-ends |
| Drive Type | Direct-drive permanent magnet inverter |
| Controller | Intelligent touch-screen PLC |
| Air-End Warranty | 2 years |
| Air Filter Precision | 1 μm |
How the Oil-Free Scroll Compression Works
The EP-CMW13.5-1.2 employs the proven orbital scroll compression principle, where a fixed stator scroll and an orbiting rotor scroll interlock to create a series of progressively shrinking crescent-shaped compression chambers. Atmospheric air enters from the periphery of the air-end, and as the rotor orbits without rotating, the gas is smoothly carried inward and compressed until it exits through the central discharge port.
Because the two scroll elements never make direct metallic contact during compression — maintained by precision-engineered tip seals — there is absolutely no need for oil lubrication within the working chamber. The result is compressed air that is inherently oil-free at the point of generation, with no downstream oil separators, coalescers, or activated carbon filters required to achieve purity. This fundamental design difference distinguishes true oil-free scroll technology from "oil-free certified" screw compressors that still carry residual contamination risk.
In the EP-CMW13.5-1.2, three such scroll air-ends operate in a coordinated modular arrangement. The intelligent PLC touch-screen controller automatically starts and stops individual air-ends based on real-time air demand, and periodically rotates which unit serves as the master and which serve as slaves. This rotation strategy ensures that runtime hours are distributed evenly across all three air-ends, significantly extending the maintenance interval and the overall operational lifespan of the machine.
Key Features of the EP-CMW13.5-1.2
● High-Rigidity Tri-Scroll Air-End
Ever Power's proprietary square-frame, high-stiffness air-end design is the first of its kind globally capable of sustaining 1.2 MPa discharge pressure. Each of the three precision scroll air-ends is independently sealed and cooled, enabling the unit to maintain full output even under thermally demanding continuous-duty cycles.
● Permanent Magnet VSD Drive
Each scroll air-end is direct-coupled to an IE4-class permanent magnet motor with IP65 protection and Class F insulation. The variable speed inverter drive provides VSD soft-start with zero inrush current and continuously adjusts motor speed to match load, delivering energy savings of up to 10% compared to fixed-speed alternatives.
● Touch-Screen Intelligent PLC Controller
The multi-unit configuration (3+ air-ends) is managed by a color touch-screen controller that displays real-time discharge temperature, system pressure, individual air-end run hours, and fault diagnostics. It automatically rotates master/slave roles and alerts operators to preventive maintenance needs before issues arise.
● Super-Quiet Operation at 61 dB(A)
The enclosure integrates high-density acoustic insulation panels and an advanced soundproofing framework that limits operational noise to 61 ±3 dB(A). Combined with the direct-drive motor (no belts, no couplings, no mechanical transmission noise), the EP-CMW13.5-1.2 is quiet enough for installation adjacent to office or laboratory environments.
● Stainless Steel Piping & Air Tank
All internal air pathways, connections, and the integrated buffer storage tank are manufactured in food-grade stainless steel. This eliminates any risk of rust, scale, or metallic particle contamination — a critical compliance requirement in pharmaceutical, semiconductor, and food processing applications.
● Minimal Consumables, Maximum Uptime
The only scheduled consumables are the 1 μm air intake filter element and the tip-seal sealing ring — both low-cost, quick-change components. Annual greasing of scroll bearings is the sole lubrication task. There are no oil changes, no oil separators to replace, and no coalescer filters to maintain, slashing total cost of ownership.
Individual Air-End Set Configuration
For OEM integrators and system builders who need the core scroll compression module embedded into their own equipment, Ever Power also supplies the EP-CMW13.5-1.2 air-end assembly as a standalone individual air-end set. Each module features a super-quiet enclosure design, no-oil construction, and stainless steel discharge connections, and can be matched with virtually any device or system requiring clean compressed air at pressures up to 1.2 MPa.
Typical Application Industries
| Industry | Application | Why Oil-Free Matters |
|---|---|---|
| Electronics & Semiconductor | PCB cleaning, SMT pick-and-place, wafer handling | Oil traces destroy component yield |
| Pharmaceutical & Biotech | Tablet coating, aseptic filling, lab gas supply | GMP compliance mandates oil-free air |
| Food & Beverage | Pneumatic conveying, bottling, packaging | HACCP food-safe air requirements |
| Precision Spray Coating | Automotive, aerospace component coating | Oil-free air prevents coating defects |
| Medical Devices | Dental equipment, surgical tool driving, oxygen generation | Patient safety and ISO 7396 compliance |
| High-Speed Rail & EV | Pantograph control, brake systems, door actuation | Contamination-free reliability in safety-critical systems |
Manufacturing Facility & Quality Assurance
Every EP-CMW13.5-1.2 unit is assembled and tested in Ever Power's dedicated air compressor manufacturing facility, which operates under a comprehensive ISO-certified quality management system. Each machine undergoes a full-load pressure performance test, noise measurement, leak inspection, and PLC function verification before shipment. The two-year air-end warranty reflects our confidence in the manufacturing precision of every scroll pair that leaves the production floor.
Customer Case Studies
🇨🇰 South Korea — PCB Electronics Manufacturer
Industry: Consumer Electronics | Application: SMT assembly line compressed air supply
"Our previous lubricated screw compressor caused recurring contamination alerts on our SMT line, leading to expensive board rework. After deploying two EP-CMW13.5-1.2 units in parallel, our rejection rate from oil-related contamination dropped to zero. The touch-screen controller's rotation logic means both units wear evenly — we've run 14 months without a single unplanned maintenance event."
★★★★★
🇬🇧 Germany — Pharmaceutical Tablet Coating Facility
Industry: Pharmaceutical | Application: GMP-certified process air for coating pans
"Regulatory compliance in our facility demands Class 0 oil-free air per ISO 8573-1. The EP-CMW13.5-1.2 was the only compressor in this power class that could reach 1.2 MPa without oil injection. Installation was straightforward, the 61 dB noise level is acceptable inside our cleanroom anteroom, and the annual maintenance requirement is surprisingly low — just filter changes and a quick bearing grease."
★★★★★
🇦🇺 Australia — Precision Automotive Spray Coating Plant
Industry: Automotive Finishing | Application: High-pressure oil-free air for automated spray booths
"We upgraded from a two-stage piston compressor that struggled at 1.2 MPa and required constant oil maintenance. The EP-CMW13.5-1.2 runs our three spray booths simultaneously with perfectly consistent pressure. The finish quality has visibly improved and we've eliminated the monthly oil-separator cartridge cost entirely. The ROI was reached within the first year."
★★★★★
Frequently Asked Questions
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Join industrial buyers across South Korea, Germany, Australia, and 30+ countries who rely on Ever Power oil-free scroll compressors for contamination-sensitive production lines. Our engineering team is ready to review your application requirements, confirm technical fit, and provide a competitive OEM quotation.
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