The CFAIR CF390M-10.5 is a portable rotary screw air compressor designed for intensive industrial work where a constant supply of high-flow compressed air is needed. It is a machine intended for civil engineering, mining, drilling, sandblasting, and professional pneumatic tools.

Its main advantage is that it combines:

• High air flow (390 CFM / 11 m³/min)
• Stable working pressure of 10.5 bar
• Cummins industrial diesel engine
• Total mobility thanks to its towable chassis

This allows for the simultaneous operation of multiple pneumatic tools or equipment that require a continuous and reliable flow.

In simple terms: it is a mobile pneumatic power source for environments where there is no electrical grid or where high power is needed.

Where it makes sense to use this compressor

This model is especially suitable for:

• Rock drilling and construction
• Public works and infrastructure
• Sandblasting
• Quarries and light mining
• Feeding multiple pneumatic hammers
• Outdoor industrial maintenance
• Remote projects without access to electricity

Thanks to its high flow rate, it can work with multiple operators at the same time without loss of performance.

When it does not make sense to use it

It is not the right option for:

• Small workshops or home use
• Intermittent low-consumption work
• Indoor spaces with noise or emissions restrictions
• Applications requiring ultra-clean air (food or medical industry)
• Users needing compact electric equipment

This is a heavy industrial machine (≈2100 kg) designed for continuous production, not for light tasks.

Compression technology: what does “rotary screw” mean

The CF390M-10.5 uses a single-stage rotary screw compression system, oil-cooled. Instead of compressing air in bursts (like piston compressors), it uses two helical rotors that rotate continuously. This produces a smooth, constant, and efficient air flow.

Practical advantages:

• Less vibration and wear
• Prolonged continuous operation
• Higher energy efficiency
• More stable air for demanding tools

This system is the standard in high-end industrial compressors.

Cummins engine: proven industrial reliability

The equipment features a Cummins 6BT5.9-C150 diesel engine, a turbocharged 6-cylinder block widely used in heavy machinery.

Key specifications explained:

• 109 kW (148 HP) → Sufficient power to maintain stable pressure under load
• Turbocharged → Better performance at high altitudes
• Water-cooled → Greater thermal stability
• Reliable cold start → Ideal for demanding climates

Cummins is a global reference in industrial engines, making maintenance, spare parts, and technical service easier.

Ease of maintenance and operation

The interior design prioritizes quick access to critical components:

• Dual-element air filter (dust protection)
• Easy oil and fuel drainage
• Illuminated control panel
• Visible warning signals
• Safety system with automatic shutdown

These features reduce downtime and maintenance costs.

Technical performance in numbers

Main specifications

• Flow rate: 390 CFM (11 m³/min)
  → Capable of feeding multiple heavy tools simultaneously
• Pressure: 10.5 bar (152 psi)
  → Suitable for most industrial applications
• Fuel tank: 210 L
  → Long working hours without refueling
• Weight: 2100 kg
  → Robust and stable structure
• Dimensions: 4166 × 2027 × 2000 mm
  → Towable and optimized for transport

Comparison with other compressors on the market

In its category (≈375–400 CFM), the CF390M-10.5 competes with brands like Atlas Copco, Doosan, or Ingersoll Rand.

Where it stands out against the competition:

• Excellent price/performance ratio
• Globally renowned Cummins engine
• Simple design that facilitates maintenance
• High fuel capacity
• Robust industrial components

Where premium models may be better:

• Lower noise levels in premium ranges
• Advanced electronic control systems
• More extensive global service networks

For companies prioritizing solid performance and competitive cost, the CF390M-10.5 is a very attractive option.

Integrated safety and protection

Includes automatic shutdown systems for:

• Low oil pressure
• High engine temperature
• Discharge air temperature
• Oil overheating
• Excessive revolutions

This protects the investment and reduces operational risks.

Conclusion: who is this compressor for

The CFAIR CF390M-10.5 is ideal for:

• Construction companies
• Civil engineering contractors
• Machinery rental companies
• Mining and drilling operations
• Mobile industrial projects

It is a machine designed to work hard, for hours, in demanding environments.

If you need a portable compressor capable of continuously powering professional equipment, this model offers a very balanced combination of power, reliability, and operating cost.