Type HFZ/HFY Seismic VibrationIsolator

The Type HFY/HFZ Spring Vibration Isolator is a heavy-duty seismic isolation solution designed for large industrial equipment. It features a high-strength steel housing, reinforced directional restraints, and high-deflection springs, making it ideal for applications where both vibration reduction and seismic protection are required.

Whether used with chillers, large pumps, cooling towers, or generator sets, the HFY/HFZ spring isolators offer outstanding performance in minimizing low-frequency vibrations while ensuring equipment stability during earthquakes, typhoons, or other extreme conditions.

Key Advantages of Type HFY/HFZ Seismic Spring Isolators？

Seismic Restraint Design
Both HFY and HFZ models feature four-directional mechanical restraints to limit lateral and vertical movement during seismic events or strong wind conditions. This ensures equipment remains stable and secure at all times.
High Load Capacity & Large Deflection
Equipped with heavy-duty steel springs, these isolators support large equipment loads with static deflection options ranging from 25mm to 100mm (customizable up to 150mm). This allows for excellent low-frequency vibration isolation.
Durable Construction
The steel housing is treated with powder coating for corrosion resistance. HFY’s enclosed design offers added protection in dusty or outdoor environments, while HFZ’s open-frame design allows for easy inspection and maintenance.
Wide Application Flexibility
Ideal for HVAC systems, chillers, pumps, fans, generators, and other heavy machinery—especially in seismic-prone or high-rise building projects.
Easy Customization
Load range, deflection, coating finish, and mounting hole patterns can be tailored to meet specific project requirements.

What applications are HFY/HFZ spring isolators suitable for?

HFY/HFZ spring isolators are ideal for floor-mounted heavy equipment that requires both high load-bearing capacity and seismic resistance. Typical applications include central air conditioning units, large water pumps, cooling towers, fan systems, and generator sets. Their robust restraining design ensures superior safety in seismic zones and high-wind areas.

What is the difference between HFY and HFZ models?

The main difference lies in their structure and appearance:

HFY features a fully enclosed housing, offering better protection against dust and corrosion.
HFZ has an open-frame design, making it easier to inspect the spring condition and adjust on-site.

Both models are equipped with high-performance springs, and seismic restraints. Custom load and deflection options are available upon request.