KOF-10A Oil-Free Spiral Compressor

In industries where air purity is non-negotiable — food processing, pharmaceutical manufacturing, and precision electronics — even trace amounts of oil contamination can result in product recalls, regulatory fines, and reputational damage. The KOF-10A Oil-Free Spiral Compressor was engineered from the ground up to eliminate this risk entirely, delivering 100% oil-free compressed air that meets the most demanding purity standards.

How Spiral Technology Works

Unlike conventional lubricated compressors that rely on oil for sealing and cooling, the KOF-10A uses a precision-machined spiral compression element. Two interleaving spiral scrolls trap air pockets and progressively compress them toward the center, achieving pressure ratios of 8–10 bar without a single drop of oil entering the compression chamber.

The result is ISO 8573-1 Class 0 certified air — the highest purity classification available — meaning zero oil carryover under any operating condition, not just at steady state. This is fundamentally different from "technically oil-free" claims based on downstream filtration; the KOF-10A guarantees purity at the source.

Key Technical Parameters

Why Class 0 Certification Matters

Many compressors market themselves as "oil-free" based on the absence of oil in the compression chamber. However, ambient air drawn into the intake can carry oil vapor from nearby equipment, and downstream components may introduce contamination. Class 0 certification, tested per ISO 8573-1, guarantees that the delivered air contains less than 0.01 mg/m³ of total oil — including vapor, aerosol, and liquid — across the full operating envelope.

For food and beverage manufacturers, this means compliance with HACCP, FDA 21 CFR, and EU 1935/2004 regulations without the need for expensive multi-stage filtration banks. Pharmaceutical facilities can validate their compressed air systems with confidence, and electronics cleanrooms avoid the yield losses associated with oil-induced defects.

Application Scenarios

• Food & Beverage: Pneumatic conveying of powdered ingredients, packaging machine actuation, bottle blowing, and product cooling on production lines where direct air contact with food is unavoidable
• Pharmaceutical: Tablet coating, fluid bed drying, cleanroom HVAC pressurization, and instrument air for analytical laboratories
• Electronics: PCB soldering atmosphere control, semiconductor wafer handling, and cleanroom pneumatic tools where sub-micron contamination causes yield loss
• Medical: Dental chair air supply, hospital central air systems, and respiratory therapy equipment calibration

Operational Advantages

Beyond air purity, the KOF-10A delivers tangible operational benefits. The spiral element has only one moving part, resulting in vibration levels below 1.5 mm/s and noise under 58 dB(A) — quiet enough for installation inside production areas without acoustic enclosures. Maintenance is limited to intake filter replacement every 2,000 hours and annual bearing inspection, eliminating the oil changes, oil filter replacements, and oil separator element costs associated with lubricated machines.

The compact footprint (just 0.8 m²) and lightweight design (under 180 kg) allow installation in space-constrained environments, while the integrated dryer option delivers ready-to-use air at a 3°C pressure dew point without additional downstream equipment.