EP-CM18BF Water-Lubricated Oil-Free Screw Air Compressor
The EP-CM18BF is an 18.5 kW fixed-frequency water-lubricated oil-free screw compressor delivering up to 3.10 m³/min at 0.8–1.25 MPa — a mid-range industrial workhorse delivering sustained high-volume Class 0 oil-free air for spray painting booths, chemical processing lines, and medium-scale food and beverage production where volume and purity must coexist.
EP-CM18BF | 18.5 kW Mid-Range Water-Lubricated Oil-Free Compressor — 3.10 m³/min
Industrial compressed air applications in the 15–25 kW power band share a common characteristic: they are large enough to be genuine production-critical systems, yet compact enough to be challenged by the mechanical complexity and maintenance overhead of larger multi-stage oil-free installations. Spray painting booths, medium-scale food processing lines, chemical blending operations, and multi-machine assembly areas all sit within this band — each with distinct air quality requirements, each with limited tolerance for compressor-related production downtime.
The EP-CM18BF serves this operational territory from a water-lubricated single-screw platform that has eliminated the mechanical complexity of both oil-injected and dry oil-free alternatives. At 18.5 kW (25 HP), it delivers a peak free air delivery of 3.10 m³/min (109 cfm) at 0.8 MPa — a volume sufficient to supply a full-size automotive spray booth, a medium beverage production line, or a five-to-eight machine assembly area — with ISO 8573-1 Class 0 oil-free air guaranteed structurally by water lubrication, not by downstream filtration that can be bypassed or degraded.
At 65 dB(A), the EP-CM18BF is noticeably quieter than equivalent oil-injected machines, enabling installation in or adjacent to occupied production areas without specialist acoustic treatment. Contact our team or visit the full product range to compare all CMB series configurations.
Technical Specifications
| Parameter | 0.8 MPa | 1.0 MPa | 1.25 MPa |
|---|---|---|---|
| Motor Power | 18.5 kW / 25 HP | 18.5 kW / 25 HP | 18.5 kW / 25 HP |
| FAD (m³/min) | 1.24–3.10 | 1.05–2.62 | 0.85–2.13 |
| FAD (cfm) | 44–109 | 37–93 | 30–75 |
| Noise Level | 65 dB(A) | 65 dB(A) | 65 dB(A) |
| Weight (Water-cooled) | 970 kg | 970 kg | 970 kg |
| Weight (Air-cooled) | 820 kg | 820 kg | 820 kg |
| Dimensions W-cooled (mm) | 1900×1000×1635 | 1900×1000×1635 | 1900×1000×1635 |
| Dimensions A-cooled (mm) | 1680×1000×1335 | 1680×1000×1335 | 1680×1000×1335 |
| Air Quality | ISO 8573-1 Class 0 | ISO 8573-1 Class 0 | ISO 8573-1 Class 0 |
| Lubrication | Pure water — zero oil | Pure water — zero oil | Pure water — zero oil |
Spray Painting and Coating: Where Oil-Free Air Quality Is Non-Negotiable
Among the many applications served by the EP-CM18BF, precision spray painting and industrial coating stand out as the environment where oil contamination consequences are most immediately visible and most costly. Oil droplets or vapour in the spray air create a class of paint defects — fish-eye, cratering, orange peel — that are easily traced to air supply quality and extremely time-consuming to rectify. In high-value coating applications (automotive body panels, aerospace structural components, specialised industrial equipment), a single contaminated batch can represent rework costs that exceed the entire annual oil-free compressor maintenance budget.
The EP-CM18BF eliminates oil from the supply chain at the source. Unlike oil-injected compressors where a degraded coalescing filter or exhausted carbon adsorber can allow oil carryover at concentrations orders of magnitude above the rated residual limit, the EP-CM18BF's water lubrication mechanism contains no oil that can appear in the compressed air under any operating or maintenance condition. The spray air quality is as consistent on day 3,000 of operation as it was on day 1.
Key Features
3.10 m³/min — Full Spray Booth Capacity
At 3.10 m³/min (109 cfm) peak FAD at 0.8 MPa, the EP-CM18BF provides sufficient volume for a full-size industrial spray booth running HVLP guns simultaneously, a medium food processing line with multiple pneumatic actuators, or a five-to-eight machine light assembly area with continuous tool operation.
Low Discharge Temperature — Dry Air at Outlet
Water lubrication maintains the compression process at ambient +15°C, producing discharge air at 45–55°C rather than the 150–200°C of adiabatic dry compression. This inherently low discharge temperature reduces the condensation load on downstream dryers and keeps the pressure dew point naturally low — important in spray painting applications where moisture in the air creates bloom and blushing defects.
65 dB(A) — Production Area Compatible
At 65 dB(A), the EP-CM18BF falls below typical production area ambient noise levels in light manufacturing environments. Direct installation alongside production equipment without specialist enclosures is practical, reducing piping runs and the pressure losses associated with remote compressor room installations.
Single-Stage to 1.25 MPa
Single-stage compression reaches 1.25 MPa without intercoolers or multi-stage configurations. This simplifies system installation, eliminates intercooler maintenance points, and avoids the stage-boundary pressure losses of multi-stage systems — delivering more of the compressor's rated output as usable compressed air at the production equipment.
Patented No-Shaft-Sealing Design
Conventional screw compressors require shaft seals between the compression chamber and the motor — a wear item requiring periodic replacement and a common source of leak-related contamination. The EP-CM18BF's patented no-shaft-sealing design eliminates this component entirely, removing both the maintenance requirement and the contamination risk associated with seal degradation.
PLC Monitoring with Maintenance Alerts
The Schneider Electric control system displays real-time discharge temperature, system pressure, run-hour count, and fault diagnostics. Automatic maintenance reminder outputs prevent scheduled service from being overlooked in busy production environments — ensuring the air quality guarantee is maintained through consistent service compliance.
Customer Case Studies
Italy — Automotive Component Coating Specialist
Industry: Automotive Manufacturing | Application: Oil-free spray air for HVLP coating of suspension and brake components
"Our previous oil-injected installation with three-stage filtration had a recurring fish-eye defect rate of approximately 1.5% — traced to oil carryover spikes during filter change intervals. The EP-CM18BF reduced this to zero. The structural water-lubrication guarantee means our quality team no longer has to factor compressed air oil content into defect analysis. The 65 dB(A) also allowed us to relocate the compressor from the remote plant room to directly behind the spray booth, reducing our piping run from 45 metres to 8 metres."
★★★★★
Mexico — Beverage Co-Packer
Industry: Food & Beverage | Application: HACCP-compliant oil-free air for filling lines across juice, water, and dairy product categories
"Our co-packing contracts require us to demonstrate Class 0 oil-free compressed air to each client during onboarding audits. The EP-CM18BF's TUV structural certification makes this demonstration immediate and unambiguous — we present the certificate and the audit closes. No filter maintenance schedule to document, no sampling program to maintain. The machine supplies all three of our filling lines with margin, and annual maintenance costs are less than 15% of what we spent on our previous oil-injected installation."
★★★★★
Singapore — Electronics Assembly and Testing Facility
Industry: Electronics | Application: Oil-free air for PCB conformal coating booths and functional test fixtures
"Singapore's industrial space constraints make compressor room size a significant cost factor. The EP-CM18BF's compact footprint and 65 dB(A) noise level allowed us to install it within the production area itself, eliminating the remote compressor room entirely and recovering that space for test equipment. The water lubrication design also produces no oil-contaminated condensate — an important factor given Singapore's strict environmental discharge regulations."
★★★★★
Frequently Asked Questions
Clean Air at Production Scale — Without Oil
Spray painters, food co-packers, chemical processors, and electronics assemblers in Italy, Mexico, Singapore, and 50+ markets rely on Ever Power 18.5 kW water-lubricated technology for sustained high-volume oil-free compressed air supply. Tell us your application — our team will confirm fit and provide a quotation within 24 hours.
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