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Small oil-free screw blower

ModelLBG-4KW
Power4KW
Capacity3.25m3/min
Pressure0.5bar
Customizationsupport
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Product Details

Product Overview

The small oil-free screw blower is a compact positive displacement blower utilizing precision-matched male and female helical rotors to compress and transport gas. Its defining characteristic is 100% oil-free operation — no lubricating oil is involved within the compression chamber, delivering pure, uncontaminated air or gas. Designed for smaller-scale applications, it combines the advanced performance of full-size screw blowers in a space-efficient package.

Core Advantages

1. Extremely Quiet Operation

  • Low-speed design with optimized internal flow channels, professional silencer, and soundproof enclosure
  • Operating noise typically controlled to approximately 75 dB — far below traditional Roots blowers (85–105 dB)
  • Suitable for installation near office areas, residential zones, or noise-sensitive environments

2. 100% Oil-Free Air

  • Non-contact screw rotor operation eliminates lubricating oil in the compression chamber
  • Delivered air is completely free of oil contamination
  • Meets stringent air quality requirements for food, pharmaceutical, and electronics industries
  • Environmentally friendly — no oil mist in discharged gas

3. High Efficiency & Energy Saving

  • Unique "internal compression" process far more efficient than Roots blower "external compression"
  • Permanent magnet synchronous motor with variable frequency drive ensures optimal operating point
  • 20–35% energy savings compared to traditional Roots blowers

4. Intelligent Control & High Reliability

  • Built-in intelligent controller integrating PLC, touch screen, and frequency converter
  • Constant pressure/constant flow control with fault diagnosis and remote monitoring
  • One-button start/stop with intuitive parameter settings
  • Predictive maintenance through intelligent early warning system

5. Compact Structure & Easy Installation

  • Fully integrated design — main unit, motor, VFD, silencer, and control system in one compact chassis
  • Minimal footprint ideal for space-constrained installations
  • Simplified on-site piping and electrical connections

Applications

  • Small-scale wastewater treatment aeration
  • Food and beverage processing
  • Pharmaceutical and bioengineering
  • Electronics and semiconductor manufacturing
  • Laboratory and research facilities
  • Small pneumatic conveying systems
  • Aquaculture oxygenation
  • Printing and packaging machinery

Packing & Shipping

  • Export-grade wooden crate packaging
  • Customization supported

Specifications

ModelLBG-4KW
Power4KW
Capacity3.25m3/min
Pressure0.5bar
Customizationsupport

Frequently Asked Questions

What are the benefits of using a small oil-free screw blower?

Small oil-free screw blowers offer several benefits including reduced maintenance costs, as there's no need for oil changes or filtration. They also provide clean air output without oil contamination, which is essential for many industries such as food and beverage, pharmaceuticals, and electronics. Additionally, they are more environmentally friendly, quieter, and often more compact, making them ideal for spaces with limited room for equipment.

How does an oil-free screw blower work?

An oil-free screw blower operates using two intermeshed screws that rotate in opposite directions. As the screws rotate, they draw air in and compress it without the use of oil in the compression chamber, ensuring that the air remains free from oil contamination. This process is highly efficient and allows for the continuous delivery of clean, dry air, which is crucial for applications requiring high air purity.

What is the typical application range for a small oil-free screw blower?

Small oil-free screw blowers are typically used in applications requiring clean and dry air, such as pneumatic conveying, aeration in wastewater treatment, and air sparging. They are also commonly found in the food and beverage industry for packaging and processing, in the pharmaceutical industry for tablet coating and powder handling, and in electronics manufacturing for component cleaning and dust extraction. These blowers are suitable for flows up to 2000 m³/h and pressures up to 1 bar.

How do I choose the right size of a small oil-free screw blower for my application?

To choose the right size of a small oil-free screw blower, you need to consider several factors including the required air flow rate (measured in m³/min or m³/h) and the operating pressure (measured in bar or psi). Additionally, assess the specific needs of your application, such as the type of process, the environmental conditions, and any future expansion plans. Consulting with a manufacturer or an engineering expert can help you determine the optimal model that will meet your requirements and ensure efficient operation.

What maintenance is required for a small oil-free screw blower?

Small oil-free screw blowers generally require less maintenance compared to oil-lubricated models. However, regular inspection and cleaning of the air filter and cooler are essential to maintain performance and efficiency. It’s also important to check the drive system and connections for any wear or leaks. Depending on the model, some units may require periodic replacement of seals or bearings. Always refer to the manufacturer’s maintenance guide for specific instructions and recommended schedules.

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