Rotary Vane Compressors
Rotary Vane Compressors - HR 04 - 07 Compressors
The Hydrovane HR Series of rotary vane compressors unmistakably Hydrovane but one hundred percent new. It's not so much evolution, but Regeneration.
The Hydrovane Regeneration HR Series is reassuringly familiar on the outside with significant changes on the inside.
Key Facts
50/60 Hz
4 - 7.5 kW
7 - 10 bar
0.57 to 1.25 m3/min
20.1 to 44.1 cfm
Air compressor only or with tank (air receiver) or with air dryer or with all 3 including air filter packages available (left hand side below)
A rotary vane compressor is a type of positive-displacement air compressor. It works by using a rotor with sliding vanes that spin inside a cylindrical housing. As the rotor turns, air gets trapped between adjacent vanes and the housing, and this trapped air volume decreases, increasing pressure and delivering compressed air.
Key characteristics of rotary vane compressors:
Smooth, pulse-free air delivery
Low operating speeds, which reduces noise and wear
Direct drive (no belts or gears) for higher reliability
Often quieter and longer-lasting than piston compressors for similar output.
📌 HR 04 – 07 Series Rotary Vane Compressors
The HR 04 – 07 compressors are part of the Hydrovane HR Series — industrial rotary vane compressors designed for reliable medium-capacity air supply.
🔧 Typical Specifications
These cover the common performance range for this series:
Motor Power: 4 kW to 7.5 kW
Frequency: 50/60 Hz
Working Pressure: ~7 – 10 bar
Free Air Delivery (FAD): approx. 0.57 – 1.25 m³/min (~20 – 44 cfm)
Noise Levels: as low as ~66 dB(A)
Direct drive design: no belts or gears → simpler, robust and long life
Slow rotational speed: 1450 – 2200 rpm → quieter and less wear
You can get these compressors:
Base unit only (compressor element)
With air receiver (tank), air dryer, and air filter packages
Fully packaged systems with receiver and dryer included.
🛠️ How It Works
A rotary vane compressor uses:
A single rotor placed off-center inside a cylindrical chamber
Vanes that slide outward due to centrifugal force
Air that enters, gets trapped, and compresses as the chamber volume reduces
This produces a continuous flow of compressed air with fewer pulsations than many piston-type compressors.
⚙️ Advantages of HR Series Rotary Vane Compressors
Quiet operation and lower vibration
High reliability (simple moving parts)
Clean, dry, pulse-free air straight from outlet
Suitable for medium air demand applications like workshops, pneumatics, machine tools, packaging, labs, and more.
🧠 Summary
The Hydrovane HR 04 – 07 rotary vane compressors are mid-range, reliable, quiet, and efficient compressed air solutions for industrial and workshop environments. They use sliding-vane technology for smooth air delivery and are available in various configurations to fit different installation needs.
