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Two-Stage Compression
Up to 15% Energy Saving
With a justified claim to leadership

Screw Compressor
SE/SEF/SPF‑2S
45 – 500 kW

Two-stage compression — up to 15% energy savings over single-stage
Optimised compressor stage or full 2-stage airend — available in both
Direct 1:1 drive — no belts, no gears, longer service intervals
SilentMount elastic suspension — vibration decoupled at source
BOGE focus control 2.0 — master control for up to four compressors
Lubrication
Oil-lubricated
Compression
1- or 2-stage
Power range
45 – 500 kW
Drive
Direct 1:1
BOGE SE/SEF/SPF-2S two-stage screw compressor — available in Sri Lanka from Tranco Tech
01How It Works
02Specifications
03Information Material
The Two-Stage Principle

Closer to isothermal —
why two stages save energy

By dividing the compression process into two stages, the SE/SEF/SPF-2S achieves compression conditions that are closer to isothermal — the theoretical optimum. The result is up to 15% energy savings over equivalent single-stage compression.

1
Stage 1 Compression
Ambient air is drawn in and compressed by the first-stage airend to an intermediate pressure.
2
Intercooling
Compression heat from stage 1 is removed by cold lubricating oil, reducing air temperature before stage 2.
3
Stage 2 Compression
Cooler air enters the second-stage airend. Injected coolant further reduces temperature during final compression.
4
Outlet Pressure
Air is raised to the required outlet pressure. Cooler compression means less energy required at every stage.
5
Up to 15% Saving
The entire process approaches isothermal compression — up to 15% energy saved versus single-stage equivalents.
15%
Energy saved
Up to 15% energy saving versus single-stage compression
The two-stage compression process and 20-process fine-machined rotors combine to deliver energy savings that accumulate significantly over years of continuous operation — directly reducing your electricity bill.
At a Glance

Power for your production —
advantages of the 2S series

An efficient and reliable air compressor will save you a lot of money — not just once, but day after day, year after year. It ensures minimal downtime for maintenance and longer intervals between inspections. The SE/SEF/SPF-2S combines the proven direct-drive reliability of the SE/SPF family with two-stage compression technology for maximum efficiency at higher power levels.

BOGE two-stage screw compressor is a high-efficiency compressor that achieves the best compression efficiency by dividing the compression process into two compression processes. The first stage compresses the ambient air to an intermediate pressure, which is used as the inlet pressure for the second stage compression. The second stage further compresses and raises the pressure to the required outlet pressure. In this process, the compression heat generated by the first stage compression is taken away by the cold lubricating oil, and the remaining compression heat is further cooled by the injected coolant entering the second stage airend, which reduces the temperature of the compressed air and greatly saves the energy required for compression. The entire compression process is closer to isothermal compression, and compared with single-stage compression, it can achieve energy savings of up to 15%. The rotor undergoes 20 processes of fine machining to ensure the accuracy, reliability and effectiveness of the rotor profile.
Consistently combating noise emissions: to decouple vibration and reduce sound levels, the drive motor, compressor stage and oil separation tank are elastically mounted on the base frame.
SE/SEF/SPF-2S series demonstrates easy maintenance with genuine BOGE spare parts. The easy access to maintenance components makes it straightforward to attend to regular maintenance with ease.
An intelligent, modular control concept ensures the remarkable efficiency gains of this series. With focus control 2.0 you simply have everything under control, with the emphasis squarely on “simply”. This overarching controller, which also functions as a combined controller for up to four compressors, makes compressed air generation more efficient and more reliable.

SE/SEF/SPF-2S Series
Product image

Key Specifications
Power range
45 – 500 kW
Compression
1- or 2-stage
Drive type
Direct 1:1
Lubrication
Oil-lubricated
Energy saving
Up to 15% vs single-stage
Design Highlights

Engineered for the highest demands
of continuous industrial production

Two-Stage Airend
By splitting compression into two stages with intercooling, the process approaches isothermal compression — the thermodynamic ideal. Energy savings of up to 15% over single-stage are achieved and sustained across the machine's operating life.
20-Process Fine Machined Rotors
Each rotor undergoes 20 processes of fine machining to ensure accuracy, reliability and effectiveness of the rotor profile — delivering consistent performance and efficiency throughout the compressor's working life.
SilentMount Suspension
Drive motor, compressor stage and oil separation tank are all elastically mounted on the base frame. Vibration is decoupled at source, protecting structure and pipework and ensuring noticeably quiet operation even at full load.
Direct 1:1 Drive
Airend and motor coupled directly at 1:1 — no belts, no gears, no intermediate wear components. Transmission efficiency is maximised and service intervals are extended significantly versus belt-driven alternatives.
Focus Control 2.0
Intelligent modular master control manages compressed air generation efficiently and coordinates up to four compressors as a combined system — reducing part-load running and maximising efficiency across the whole installation.
Easy-Access Maintenance
All maintenance points are immediately reachable, and the design is built around servicing with genuine BOGE spare parts. Minimal downtime and extended inspection intervals deliver lower operating costs across the machine's life.
Configuration Options

Configure your 2S series
to your exact requirement

Available in fixed-speed and frequency-drive variants across the full 45–500 kW range. Contact Tranco Tech for a configuration recommendation tailored to your application.

Single-Stage (SE)
Single-stage optimised compressor stage option available within the 2S platform for applications where two-stage is not required.
Two-Stage (2S)
Full two-stage compression for maximum energy efficiency. Up to 15% savings over single-stage in continuous high-demand applications.
Frequency Drive (SEF/SPF)
Variable speed drive variants for installations with variable air demand. Automatically matches output to consumption, eliminating idle losses.
Master Control
Focus control 2.0 for combined management of up to four compressors as a single coordinated system, maximising efficiency across the whole installation.
Typical Applications

Built for continuous duty —
across heavy industrial applications

With a power range from 45 to 500 kW, the SE/SEF/SPF-2S is suited to large-scale industrial compressed air installations where maximum efficiency, reliability and long service life are the primary requirements.

🏭Manufacturing
🧵Textile
🍃Food & Beverage
💊Pharmaceutical
⚡Energy
🔩Metal & Engineering
🌿Agriculture
🏗Construction
Information Material

Expert Knowledge & Technical Data

Brochure — SE/SEF/SPF-2S Series
Available on request  ·  PDF
Datasheet — SE/SEF/SPF-2S Series
Available on request  ·  PDF

To request any of the above documents, contact Tranco Tech at info@trancotech.com or call +94 114 348 437.

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Need Help Choosing the Right Model?

Our engineering team will assess your flow rate requirements, operating pressure, duty cycle and site conditions — and recommend the right SE/SEF/SPF-2S configuration for your application.

Request a Quote → Contact Our Engineers

No. 81, Aramaya Place, Colombo 09  ·  +94 114 348 437  ·  info@trancotech.com