Single-stage low pressure oil-Injected rotary screw compressor SLL45-315
Single-stage low pressure oil-Injected rotary screw compressor SLL45-315
Single-stage low pressure oil-Injected rotary screw compressor SLL45-315
Sing-Stage Low Pressure Oil-Injected Screw Compressor

Single-stage low pressure oil-Injected rotary screw compressor SLL45-315

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Single-Stage Low-Pressure Oil-Injected Rotary Screw Compressor SLL45-315

The workhorse behind clean, reliable compressed air for industry, HVAC, and process plants.

When you need a compact, energy-efficient solution that can run on either air- or water-cooled systems, the SLL45-315 series delivers. Its single-stage, oil-injected rotary-screw design provides a stable output at low pressures (3-4 bar) while keeping maintenance intervals long and operating costs low. Below we break down the available power ratings, performance envelopes, and key options so you can match the right unit to your application.

Power-Rating Overview

Power (kW) Volume Flow (FAD) m³/min Discharge Pressure (bar) Cooling Frequency Conversion
45 14.0 – 19.5 3 / 4 Air / Water Yes
55 17.0 – 23.5 3 / 4 Air / Water Yes
75 22.5 – 31.0 3 / 4 Air / Water Yes
90 27.0 – 37.0 3 / 4 Air / Water Yes
132 40.0 – 55.0 3 / 4 Air / Water Yes
160 48.0 – 66.0 3 / 4 Air / Water Yes
200 60.0 – 80.2 3 / 4 Air / Water Yes
250 73.0 – 96.5 3 / 4 Air / Water Yes
315 88.0 – 115.0 3 / 4 Air / Water Yes

FAD = Free Air Displacement – the theoretical flow at the compressor’s rated speed.

Why the SLL45-315 Stands Out

Feature Benefit
Oil-injected screw design Improves sealing, reduces wear and extends service life.
Single-stage low-pressure operation Ideal for high-flow applications like ventilation, paint booths, and food processing.
Modular cooling options Flexible installation with air- or water-cooling.
Integrated frequency converter Energy-saving speed control with soft-start capability.
Compact footprint Space-saving design for easy installation.
Robust bearing and seal technology Reduced vibration and quieter operation.

Choosing the Right Size

  • Small workshops (45-55 kW) – Suitable for pneumatic tools and small operations.
  • Medium plants (75-132 kW) – Ideal for packaging lines and HVAC systems.
  • Heavy-duty facilities (160-315 kW) – Designed for continuous high-volume production.

Cooling Selection:

  • Air-cooled – Easy installation with proper ventilation.
  • Water-cooled – Higher efficiency in hot environments.

Quick Installation Checklist

  1. Verify inlet air quality – Install proper filtration.
  2. Select cooling – Ensure adequate airflow or water supply.
  3. Plan for power – Confirm 3-phase 400 V compatibility.
  4. Mounting – Use skid base and align piping.
  5. Control wiring – Connect PLC interface for monitoring.

FAQ

Q1: Can the SLL45-315 run continuously at full load?

Yes. With proper cooling and maintenance, it is designed for 24/7 operation.

Q2: What maintenance is required?

Routine oil checks, filter replacements, and periodic inspection of components.

Q3: Is it suitable for explosive environments?

Standard models are not ATEX-rated, but certified versions are available on request.

Q4: How much energy can I save?

Up to 30% savings with variable-speed control depending on usage.

Q5: What is the warranty period?

24 months standard, extendable to 5 years with service contract.

Bottom Line

The SLL45-315 single-stage low-pressure oil-injected rotary screw compressor offers a reliable, energy-efficient, and flexible solution for various industrial needs. With multiple power options, flexible cooling, and built-in frequency control, it is engineered to deliver consistent performance while reducing operating costs.

Contact us today for sizing and consultation.

 

 

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