Rotary Screw Air Compressors
Lubricated Rotary Screw Compressor 30 - 37 kW
CompAir L30 - L37, E, RS
The new versatile screw compressor range from 30 to 37 kW can be configured to meet the customers' efficiency requirements. The E-models feature a larger airend delivering highest efficiency levels.
Well known in the industry for quality and reliability, CompAir continuously develops the L-Series achieving cutting edge performance and efficiency.
We are delighted to inform you that the new frame 3 premium efficiency “e” & “eRS“ models are now officially launched and ready to order.
Frame 3 oil lubricated compressors are covering the range from 30 - 37 kW
The upgraded premium efficiency variants are available at 30 - 37 kW at fixed speed and variable speed.
Pressure range: 5 to 13 bar
The new compressors deliver efficiency improvements of up to 8% when compared with standard models, plus a 8% higher flow rate.
An investment that pays off
The regulated speed models save energy by matching the output to the plant air demand. All fixed speed models are available with integrated dryer option.
The E-Models of the L-Series screw compressors feature an extra large airend with optimised rotor tip speed achieving up to 6% energy savings.
The largest cost component of a compressor is the energy to run it. The reduction of energy costs significantly impacts on the total costs of ownership.
The additional investment costs for this range of super efficient compressors will pay back in many cases in less than 12 months. The extra large airend also has a longer life expectancy.
Regulated speed compressors
The regulated speed models can efficiently and reliably handle the varying air demand found in most plant air systems. The annual cost of ownership can be significantly reduced using regulated speed technology.
CompAir RS features are your benefits.
The L-RS Series products are designed to obtain the greatest efficiency across the entire operating range.
Wide regulation range - No cycles means substantial energy savings.
Perfect motor - drive - airend design - High efficiency across broad flow range.
Watch a video of these models being built at the Simmern manufacturing plant in Germany:
You’re looking at an industrial-grade lubricated rotary screw compressor range (30–37 kW)—specifically the CompAir L30–L37 series (E, RS variants). These are not small workshop units; they’re meant for continuous-duty industrial air supply (manufacturing, textile, automotive, etc.).
Here’s a clear breakdown so you understand what you’re dealing with 👇
🔧 CompAir L30–L37 (E, RS) Overview
Power range: 30 kW to 37 kW
Type: Oil-lubricated rotary screw compressor
Pressure range: ~5 to 13 bar
Flow rate (approx.):
L30 → ~5.1–5.75 m³/min
L37 → ~6.1–7.1 m³/min
These are part of CompAir’s “Frame 3” premium efficiency series, designed for high reliability + energy savings.
⚙️ Variants Explained
You’ll see multiple suffixes—here’s what they mean:
L30 / L37 (standard): Fixed speed compressor
E (Efficiency model):
Larger airend
Better energy efficiency (~6–8% savings)
RS (Regulated Speed / VSD):
Variable speed drive
Adjusts output to demand → big energy savings
eRS: Combination of both (most efficient)
🚀 Key Features
High-efficiency IE4 motor → lower power consumption
Advanced airend design → improved airflow & durability
Low oil carryover (<3 ppm) → cleaner compressed air
Integrated controller (Delcos XL SE7) → monitoring, automation, remote control
Quiet operation: ~67–68 dB(A)
Easy maintenance: accessible filters, modular design
💡 Why Industries Use This Range
Continuous operation (24/7 plants)
Stable air supply (no pressure drops)
Lower lifecycle cost (energy is biggest expense)
Suitable for:
CNC machines
Packaging lines
Textile mills
Food processing (with filtration)
🧠 How to Choose (Important)
If you're selecting between L30–L37 variants:
Choose L30 vs L37 → based on required airflow (CFM/m³/min)
Choose E model → if energy cost matters (usually worth it)
Choose RS (VSD) → if your demand fluctuates (huge savings long-term)
👉 In most modern factories, L37 eRS (VSD + efficiency) is the smartest investment despite higher upfront cost.
🧾 Bottom Line
CompAir L30–L37 series = premium industrial compressors
Focus is on energy efficiency, reliability, and continuous operation
The RS (VSD) + E models offer the best ROI over time
