Greentech International (Zhangqiu) Co., Ltd. specializes in the R&D and manufacturing of high-performance Side Channel Blowers. To meet the demand for stable air sources across industrial automation, environmental protection, water treatment, material conveying and equipment supporting sectors, the company has launched the ring blowers.

Adopting a compact oil-free design, the 4RB series features impellers mounted directly on the motor shaft, cutting energy loss caused by traditional transmission structures. No lubricating oil is involved in air compression during operation, enabling continuous delivery of clean airflow. This makes the blowers suitable for industrial applications with strict requirements on air quality, operational stability and maintenance convenience.

Air enters the blower through the air inlet and circulates inside the side channel. High-speed rotating impellers continuously transfer kinetic energy to the air, gradually boosting gas pressure before steady output via the air outlet.

Thanks to its oil-free operation, compact structure, easy maintenance and strong continuous running capability, the 4RB series ring blower serves as an ideal air source solution for industrial scenarios requiring small-to-medium flow and medium pressure.

Core Technologies & Working Principles

Continuous Kinetic Energy Transfer

After air flows into the side channel, high-speed rotating impellers propel the air to move along the impeller direction. Centrifugal force accelerates the gas, which absorbs constant energy inside the side channel for gradual pressure buildup.

Compared with traditional intermittent air supply equipment, ring blowers deliver more consistent and stable air output with minimized pressure fluctuations, enhancing overall system stability.

Side Channel Circulation Pressurization Technology

The 4RB series adopts a side channel pressurization structure. Once air enters, a circulating flow path forms between the impellers and side channels. Repeated passage of gas through the impeller zones accumulates air kinetic energy to achieve high-pressure output.

This structure is perfectly suited for:

Vacuum adsorption

Small-scale pneumatic conveying

Aeration and oxygenation

Industrial air blowing systems

Stable Low-Pulsation Airflow Output

Air is continuously conveyed by high-speed rotating impellers, granting the 4RB ring blower smoother airflow characteristics than traditional positive displacement blowers. Equipped with outlet silencing structures, the blower effectively reduces operating noise, delivering a comfortable working environment for automated machinery and indoor installations.

Structural Design & Operational Reliability

Oil-Free Compression Structure

No lubricating oil is required inside the compression chamber of the 4RB series, meaning air never comes into contact with lubricants during compression.

Advantages of this design include:

Purer output air

Eliminated risk of oil contamination

Reduced routine maintenance workload

It fits environmental protection equipment, packaging machinery, food processing auxiliary equipment and other facilities demanding high air cleanliness.

Optimized Bearing Layout

Bearings are installed outside the compression zone, shielding them from adverse impacts of high-temperature airflow, water vapor and dusty working conditions. Well-engineered structural design ensures steady equipment operation and extends the service life of core components.

High-Efficiency Heat Dissipation Design

The 4RB series adopts an all-aluminum alloy construction with outstanding heat dissipation performance. The optimized body structure lowers operating temperature and improves reliability during long-term operation.

Key Performance Advantages

100% Oil-Free Air Output

With an oil-free compression chamber, the blower discharges contaminant-free airflow. Applicable to:

Environmental protection equipment

Water treatment systems

Automated machinery

Industrial auxiliary equipment

Low-Noise Stable Operation

Precision dynamic balancing treatment on impellers cuts operational vibration. Combined with silencing structural design, the unit runs quietly, making it suitable for installation near production workshops, laboratory equipment and automated production lines.

Compact Structure to Save Installation Space

Built with an integrated design, the 4RB series features small size and light weight. Compared with conventional large blowers, it occupies far less installation space and can be easily integrated into various industrial machinery.

Dual Positive & Negative Pressure Functionality

Customized to diverse system requirements, the 4RB ring blower supports both:

Positive pressure air blowing

Vacuum adsorption

Gas circulation A single unit satisfies multiple industrial aerodynamic demands.

Maintenance & Continuous Operation Capacity

Low-Maintenance Design

The 4RB series boasts a simple structure with few internal moving parts. Routine maintenance mainly covers:

Filter inspection

Inlet & outlet cleaning

Operational status monitoring

Periodic bearing upkeep

It slashes maintenance costs versus equipment requiring complex lubrication management.

Long-Duration Continuous Operation

Crafted with high-strength structures and optimized heat dissipation, the 4RB series supports prolonged continuous operation under rated flow, pressure and ambient conditions. Standardized maintenance sustains stable long-term performance.

4RB 1AC

4RB 3AC