Vibration issues have always been a critical concern in the operation of industrial equipment, significantly impacting equipment stability, service life, and working environment. Centrifugal fans, as high-speed rotating devices, generate intense vibrations and noise during operation, which can accelerate equipment wear, damage bearings or foundations, and even cause pipeline looseness—seriously affecting the safety and efficiency of the entire production system.

To address these challenges, more and more companies are seeking high-performance and reliable vibration isolation solutions. Recently, our company provided a customized solution for a customer in Malaysia, installing our self-developed internal twin-spring vibration isolators on their industrial centrifugal fan system. This effectively resolved issues of excessive vibration, unstable operation, and noise interference, and received excellent user feedback.

What Are Internal Twin-Spring Vibration Isolators?

Internal twin-spring vibration isolators are an upgraded type of spring isolator device. They incorporate two sets of spring systems within a single structural housing, usually arranged coaxially. This “primary-secondary cooperative” design distributes loads more effectively and balances stress, thereby improving overall vibration isolation performance and stability. Compared with traditional single-spring isolators, this design can absorb both high-frequency and low-frequency vibration waves, making it particularly suitable for equipment with variable operating frequencies and strong vibration sources.

Additionally, the twin-spring structure offers stronger dynamic response capabilities, maintaining excellent load-bearing and damping performance during equipment start-up, acceleration, and deceleration, preventing system instability caused by resonance.

Why Do Centrifugal Fans Particularly Need High-Performance Vibration Isolators?

Centrifugal fans are widely used in industrial ventilation, air transport, and exhaust treatment systems. However, the dynamic loads and axial imbalances caused by their high-speed rotation generate continuous mechanical vibrations. Without proper vibration isolation, a range of problems may arise:

• Persistent noise pollution impacting the work environment;

• Accelerated bearing and foundation wear;

• Cracks or looseness in connected piping systems;

• Reduced overall equipment efficiency and increased maintenance frequency.

Therefore, centrifugal fans require vibration isolators with strong dynamic stability, fatigue resistance, and adaptability to multi-frequency vibration environments to ensure long-term stable operation.

Malaysian Customer Case: From Pain Points to Solution

This Malaysian customer is a manufacturer specializing in industrial ventilation system construction. Their fan equipment had long suffered from excessive vibration causing unstable foundations, noise disturbance, and frequent maintenance issues. After detailed communication and understanding of their operating parameters and installation environment, we recommended replacing their original isolators with our internal twin-spring vibration isolators customized to their needs.

After installation, the customer reported:

• Noise reduction of approximately 35%, significantly improving the working environment;

• Noticeably improved overall fan operation stability with minimal vibration;

• Stabilized foundation structure with extended maintenance intervals;

• Clean and neat installation facilitating future inspections and maintenance.

The customer highly praised our product quality and service, planning to apply this isolator model to their future fan projects.

Core Advantages of Twin-Spring Vibration Isolators

Beyond excellent performance in fan equipment, internal twin-spring vibration isolators offer several key advantages:

• Stronger stability: Balanced stress distribution prevents equipment tilting or shaking;

• Higher load capacity: Suitable for heavy or dynamically loaded equipment;

• Longer fatigue life: Reasonable internal stress allocation delays spring aging;

• Broader frequency response: Absorbs multiple vibration frequencies, avoiding resonance;

• Wider application environments: Suitable for indoor/outdoor, ground or suspended installations.

Where Else Can Twin-Spring Vibration Isolators Be Used?

This type of isolator is widely applicable to various industrial equipment, including:

• Industrial pumps and wastewater treatment equipment;

• Cooling towers and chilled water systems;

• HVAC units;

• Precision CNC machines;

• Generators and variable frequency compressors;

• Industrial conveyors and lifting systems.

Any equipment subject to continuous mechanical vibration can consider using this isolator for noise reduction and vibration control.

How to Choose the Right Vibration Isolator Model?

Purchasing vibration isolators is not a one-size-fits-all matter. Accurate selection should be based on:

• Total equipment weight and operating load;

• Vibration frequency range;

• Installation structure and number of support points;

• Environmental conditions such as humidity, wind, or corrosive gases;

• Whether limiters or damping devices are needed.

We provide free selection services and structural design support. Based on your drawings or equipment parameters, we quickly match the suitable model and provide 3D drawings and technical documentation, ensuring worry-free procurement and efficient installation.

Conclusion: Reliable Protection for Stable Operation

Internal twin-spring vibration isolators represent an innovative advancement in industrial vibration control technology. Their outstanding stability and vibration isolation performance make them a preferred choice for many industrial equipment manufacturers. The successful application with our Malaysian customer once again demonstrates their reliability and broad applicability in real-world projects.

Going forward, Shanghai Songjiang Vibration Absorber Co., Ltd. will continue to focus on innovation and development in vibration isolation technology, providing high-performance, reliable products and solutions for customers worldwide.