Rotary Screw Air Compressors
L Series 7 - 11 kW
Fixed & Regulated Speed
Well known in the industry for quality and reliability, CompAir continuously develops and expands the L-Series to achieve optimum performance and efficiency and maximum flexibility. The wide range of screw compressors from 7 to 11 kW includes fixed and regulated speed models, high efficiency models and is available as airstation including receiver and refrigerant dryer.
Engineering Excellence
Compressors are more than just a financial investment, they are a key component in ensuring that manufacturers, processors and operators receive consistent, high quality low cost air. The screw compression element is the heart of the compressor and therefore CompAir keeps the design and manufacture in-house, using the latest CNC rotor grinding machinery, coupled with online laser technology. The resulting reliability and performance ensure that operating costs will remain low throughout the compressor’s life.
Benefits
Compressor base mounted
Complete package including compressor, dryer and receiver
Small carbon foot print (by mounting the components on the receiver the footprint is reduced up to 55%)
In-house AirEnd
Highly efficient motors
Easy maintenance
Wide regulation range
You’re referring to Rotary Screw Air Compressors – L Series (7–11 kW), typically from brands like CompAir. Here’s a clear, practical breakdown along with real product examples so you can understand and compare options.
🔧 What this category means
These are industrial rotary screw compressors designed for continuous-duty applications like workshops, fabrication units, and small manufacturing plants.
Power range: 7.5 kW to 11 kW (≈10–15 HP)
Airflow: ~0.8 to 1.9 m³/min depending on pressure
Pressure: typically 7–13 bar
Variants: Fixed Speed & Regulated (Variable) Speed
⚙️ Fixed vs Regulated (Variable) Speed
Fixed Speed (FS):
Best for constant air demand
Lower upfront cost
Simple and reliable
Regulated Speed (RS / VSD):
Adjusts motor speed based on demand
Saves up to ~35% energy in variable loads
Better pressure stability
🧠 How to choose the right one
Continuous production line? → Go fixed speed
Multiple machines switching on/off? → Choose VSD
Tight budget or startup? → Entry-level model works
Need compact setup? → Look for “AirStation” (with tank + dryer)
🏭 Typical applications
CNC machines & fabrication shops
Painting & sandblasting
Packaging lines
General industrial compressed air
✔️ Quick takeaway
Best balance: CompAir L11 (fixed)
Best efficiency: CompAir L11RS (variable)
Best budget: Generic 7.5–11 kW units
