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)
Rotary vane compressors are a type of positive-displacement air compressor that use a rotor with sliding vanes rotating eccentrically inside a cylindrical housing. As the rotor spins, air is drawn in, trapped between the vanes, and compressed as the volume between the vanes decreases. This results in a smooth, continuous flow of compressed air with relatively low pulsation.
Key advantages:
Quiet operation due to slower rotating speeds.
Low vibration and stress on components.
Simple, direct-drive design (no belts/gears) → less maintenance and long life.
Stable, pulse-free air output, often cleaner with lower oil carry-over.
🔧 HR 04 – 07 Series (Hydrovane Rotary Vane Compressors)
This series (often marketed as Hydrovane HR Series) includes a range of mid-range rotary vane compressors, typically offered in the 4 – 7.5 kW power class and designed for industrial and workshop use.
Typical Specifications (HR 04-07):
Motor Power: 4 – 7.5 kW
Operating Frequency: 50/60 Hz
Pressure Range: ~7 – 10 bar
Free Air Delivery (FAD): ~0.57 – 1.27 m³/min (≈ 20.1 – 44.8 cfm)
Noise Levels: ~66 dB(A) (quiet for industrial compressors)
Drive: Direct drive (no belts or gears)
Speed: Slow operation (1450 – 2200 rpm) for long life and low wear
Configurations Available:
✔ Basic compressor unit
✔ With air receiver (tank)
✔ With air dryer and filters
✔ Combined packages with all accessories for ready-to-use installations
📍 Where HR 04-07 Compressors Are Used
These compressors are well suited to small and medium industrial applications that need steady, medium-pressure compressed air:
✔ Pneumatic tools and workshop use
✔ Packaging and printing machinery
✔ Laboratory and instrumentation air supply
✔ Dental and medical air systems
✔ OEM machinery and manufacturing lines
✔ Machine tools and robotics
N4‑7‑200 Rotary Screw Air Compressor, 7.5‑250 HP Industrial Rotary Screw Air Compressor, and Wren 7.5 hp Screw Rotary Type Air Compressor are rotary screw compressors — similar category but using screw elements instead of vanes; they typically deliver higher flows for larger industrial use.
Single Stage Air Compressor ‑ 400L Capacity, 7.5 Hp and Direct Driven Air Compressor 30L 2.5HP | PL‑30 are general air compressors you might see for smaller workshops or light industrial tasks.
Direct Driven Air Compressor 80L 4HP | PL‑80 and KCE444HAG‑V334H | EMERSON | Compressor are examples of direct-drive compressors.
Rotary Compressor ‑ 0.5 Hp, Industrial Use is a general industrial rotary compressor unit.
📌 Summary
The HR 04 – 07 series rotary vane compressors are reliable, smooth-flow, medium-pressure air compressors ideal for workshops and various industrial applications. Key benefits include quiet operation, low maintenance, and versatile package options (with dryers and receivers).
If you want, I can also provide a comparison between rotary vane, rotary screw, and reciprocating compressors to help pick the best one for your specific application.
