Rotary Screw Air Compressors
Lubricated Rotary Screw Compressor 30 - 45 kW
CompAir Li30-45
The New Generation
Industries across the globe rely on CompAir rotary screw compressors for the supply of high quality compressed air. The CompAir Li series air compressor range incorporates the best of CompAir technology, design and quality. To deliver reliable, economical and efficient performance in a completely new package. The Li series delivers high quality air at volumes at a pressure range between 7 and 10 bar and is available in air cooled versions.
Maximum Durability
We maximise service life and durability by eliminating elastomer and thermoplastic pipe and tube in system pressure lines. Replacing them with corrosion resistant stainless steel tubing and passivated zinc coated carbon steel piping. For ease of maintenance we complete the connection with viton sealed grooved couplings and self sealing high pressure compression fittings.
Designed for Serviceability
Maintenance personnel love the Li series compressor range. Service access is quick and easy with all doors able to be removed in seconds. We’ve also made sure serviceable components including filters are easily accessible and no piping needs to be disconnected to service the separator.
The CompAir Li30–45 series is the next-generation lubricated rotary screw compressor range (30–45 kW), designed for higher-capacity industrial operations where efficiency, durability, and continuous performance are critical.
🏭 CompAir Li30–45 Series Overview
The Li30–45 range represents CompAir’s new-generation platform, offering improved design, durability, and serviceability for heavy-duty industries.
Power range: 30 kW, 37 kW, 45 kW
Type: Oil-lubricated rotary screw compressor
Cooling: Air-cooled
Pressure range: Typically 7–10 bar
Drive type: Direct or gear drive (belt-free)
These compressors are widely used in:
Automotive & assembly plants
Textile & packaging industries
Food processing (non-direct air contact)
Continuous process industries
⚙️ Key Features & Advantages
1. 🔋 High Energy Efficiency
Premium IE3 motors as standard
Optimized airend with CNC-machined rotors
Belt-free transmission reduces energy loss
👉 Result: Lower power consumption vs conventional compressors
2. 🛠️ Maximum Durability
Stainless steel & zinc-coated piping (no weak rubber hoses)
High-pressure fittings with Viton seals
Designed for long service life in harsh environments
3. 🔧 Easy Maintenance & Serviceability
All panels removable within seconds
Filters and separator accessible without dismantling piping
Reduced downtime and service cost
4. 🔇 Low Noise + Compact Design
Enclosed package design
Reduced vibration and noise
Ideal for indoor installation
5. ⚡ Flexible Configurations
Fixed speed (Li30, Li37, Li45)
High-efficiency “E” models
Variable speed (RS) options in higher variants
🧠 When to Choose Li30–45 Series
Choose this range if you need:
✔ High airflow for large plants
✔ Continuous 24/7 operation
✔ Lower lifecycle cost (energy + maintenance)
✔ Durable system for harsh industrial environments
Best variant selection:
Li30 / Li37 (Fixed): Stable load operations
Li45e: Maximum efficiency & long-term savings
Li30–45 RS: Fluctuating air demand → best energy savings
⚠️ Things to Consider
Higher initial investment than smaller compressors
RS (VFD) models need stable electrical conditions
Proper air treatment (dryer + filters) recommended
✅ Bottom Line
The CompAir Li30–45 series is a premium industrial compressor platform, offering:
Strong build quality
Advanced efficiency (especially “e” and RS variants)
Easy maintenance and long service life
