Oil-Free Air Suspension Turbo Blower

  • Integrates advanced air-suspension bearings, high-speed permanent magnet motors, and intelligent control systems

  • Long service life and no air pollution since there is no oil involved

  • Designed specifically for harsh industrial environments

  • Energy-efficient and environmentally friendly

Competitive advantages

Kotech Oil-Free Air Suspension Turbo Blowers have the following application advantages over similar types of machines.

🔧 Energy efficiency
30–50% lower energy consumption vs. traditional roots blowers.

🛠️ Maintenance
No lubricants/mechanical contacts, annual maintenance cost reduced by 92%.

🚀 Reliability
Semi-permanent design life (>20 years).

📦 Space saving
Compact integrated structure, 50% footprint reduction.

🔇 Eco-friendliness
Zero oil pollution, noise≤80 dB.

Applications

In addition, the blower is also widely used in various complex industries, all aspects of production to meet the needs of enterprises.

  • Environmental: Wastewater aeration (30–50% energy savings), desulfurization oxidation.
  • Industrial manufacturing: Oil-free air supply for food/pharmaceutical processing, pneumatic conveying in petrochemicals.
  • Energy & materials: Cement kiln combustion air, fly ash handling in power plants.
  • Special processes: Vacuum packaging, solvent recovery, gas-phase separation.
Medical and pharmaceutical industry

Industrial manufacturing

By 2025, the pharmaceutical processing industry will use oil-free blowers to provide clean air, improving product quality by 15%.

Environmental

The use of oil-free blowers at wastewater treatment plants has been proven to be practical in improving purification efficiency.

Energy & Materials

The use of oil-free blowers in coal handling at power plants has increased power generation efficiency by approximately 7% compared to before.

Core technologies

Air suspension bearing system

  • Utilizes a hybrid aerostatic-aerodynamic principle: At startup, the rotor contacts elastic foil surfaces (coated with solid lubricant). Upon reaching the lift-off speed (≥20,000 rpm), a high-pressure air film (5–10μm thickness) is formed between the rotor and foils, enabling frictionless levitation.
  • Self-regulating throttlers dynamically adjust air film pressure to maintain rigidity under load fluctuations.
  • Eliminates lubricating oil, complying with ISO 8573-1 Class 0 oil-free standards.

High-speed permanent magnet synchronous motor

  • Efficiency≥95%, speed range: 20,000–65,000 rpm.
  • Direct-drive impeller connection (no gearbox/coupling), achieving 100% power transmission efficiency.
  • Air-cooling system enhances reliability by 40% compared to water-cooled alternatives.

    • Aerospace-grade impeller

  • Material: Forged AL7075 aluminum or titanium alloy.
  • Optimized with ternary flow theory, manufactured via 5-axis CNC machining.
  • Passes 115% overspeed test; polytropic efficiency ≥85%.

    • Intelligent control system

  • Integrated PLC + variable frequency drive (VFD) for real-time airflow/pressure adjustment.
  • Self-monitoring parameters: speed, temperature, pressure, surge risk.
  • Remote monitoring support with fault response time <0.1 seconds.

    • Parameters List

    Parameter Specification range
    Power range 15 – 400 kW
    Operating pressure 30 – 120 kPa (customizable up to 8,000 mmAq)
    Flow rate 6 – 275 m³/min
    Noise level ≤ 80 dB (@1.5 m)
    Rotational speed 20,000 – 65,000 rpm
    Certifications ISO 8573-1 Class 0 oil-free certification
    Impeller performance certified per AMCA 210

    Related products

    Oil Free Diesel Portable Air Compressor

    Oil Free Scroll Air Compressor