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VIBRO ISOLATOR VRSHI
VIBRO ISOLATOR VRSHI
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VIBRO VCHS SPRING HANGER
VIBRO VCHS SPRING HANGER

VIBRO ISOLATOR VRSIR

VRSIR Restrained Spring isolators are designed to deliver high-deflection vibration isolation while incorporating structural containment features that prevent excessive movement under dynamic or seismic conditions. These units utilize large-diameter, laterally stable steel springs housed within a rigid frame that limits vertical and horizontal displacement, ensuring safe and predictable performance in demanding environments.

Each spring assembly is integrated into a heavy-duty upper load plate with a built-in leveling mechanism, allowing for precise load distribution and simplified installation. The restrained design ensures that the spring remains securely seated throughout its operating range, even under transient or overload conditions.

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Description

Description

  • Light-Duty Models: For lower load applications, the isolators feature molded neoprene bottom load plates that provide effective vibration damping and acoustic isolation while maintaining compact form factors.
  • Heavy-Duty Models: For higher capacity requirements, steel springs are welded to reinforced steel bottom plates. A bonded neoprene isolation pad enhances vibration attenuation and minimizes structure-borne noise transmission.

Technical Specifications and Performance Highlights:

  • Spring Geometry: The spring diameter-to-compressed height ratio is maintained at a minimum of 0.8, ensuring lateral stability and consistent deflection characteristics.
  • Corrosion Resistance: Springs are epoxy powder coated and rated for 1000-hour salt spray exposure, offering long-term durability in corrosive or outdoor environments.
  • Acoustic Isolation: A neoprene friction pad acts as a sound break, effectively reducing high-frequency vibration transmission into the structure.
  • Isolation Efficiency: The system achieves vibration isolation efficiency exceeding 95%, making it ideal for sensitive equipment and acoustically critical installations.
  • Anchoring Provisions: Bottom plates are pre-drilled with bolt holes to facilitate secure attachment to the supporting structure, enhancing safety and stability.
  • Lateral Stability: The lateral stiffness of the spring assembly is engineered to exceed 1.0 times the rated vertical stiffness, ensuring reliable performance under multi-directional loads.
  • Overload Tolerance: Each unit is designed to accommodate a minimum of 50% overload beyond its rated capacity. Springs are structurally safe even when compressed to solid height, providing an added margin of safety.

VRSIR restrained spring isolators shall comprise cased, large-diameter steel springs engineered for lateral stability. Each spring shall exhibit lateral stiffness exceeding the rated vertical stiffness and be capable of supporting a minimum overload capacity of 50% beyond its nominal load rating.

Springs shall be mounted between upper and lower load plates. The upper plate shall incorporate leveling bolts, locknuts, and washers to facilitate secure attachment and precise alignment of supported equipment. The bottom plate shall be fitted with non-skid neoprene isolation pads and include provisions for bolting directly to the supporting structure.

Where required by design or application, isolators shall be enclosed within fabricated steel housings. These housings shall incorporate vertical restraints, neoprene snubbers, or internal isolation pads to restrict excessive movement and eliminate metal-to-metal contact under dynamic or seismic conditions.

All housings shall be corrosion-resistant, finished with powder coating, electroplating, or galvanization as appropriate to the installation environment. Spring elements shall be powder-coated and, where non-welded, rated for salt spray resistance in accordance with applicable standards. Each spring shall be color-coded or clearly marked for load identification and verification.

Spring selections shall be made to achieve the static deflections specified in the project documentation or Vibration Isolation Schedule, ensuring compliance with performance criteria and installation requirements.

VRSIR restrained spring isolators are purpose-built to eliminate the transmission of structural noise and vibration from floor-mounted mechanical equipment into the building framework. Their housed design incorporates vertical restraints and internal damping elements, making them particularly effective for installations where movement control and safety are critical such as seismic zones or equipment subject to wind loads and transient forces.

These isolators are especially suited for low-speed machinery, where vibration energy can otherwise propagate through structural components, resulting in occupant discomfort, accelerated equipment wear, and acoustic disruption. When correctly selected and installed, VRSIR units offer the highest level of assurance in mitigating structure-borne vibration and noise, while maintaining equipment stability and alignment.

Typical Applications and Vibration Control Capabilities

VRSIR restrained spring isolators are engineered to control both high-frequency and low-frequency vibrations generated by rotating and reciprocating machinery. Their robust construction and containment features make them ideal for:

  • Rotary Equipment: Pumps, rotary wheels, and propeller-driven systems
  • HVAC Systems: Packaged air handling units, air conditioning modules, and fan coil assemblies
  • Fan Assemblies: Centrifugal and axial fans operating across varied speed ranges
  • Compressors and Engines: Reciprocating chillers, air compressors, and internal combustion engines

These isolators are designed to accommodate the dynamic characteristics of each equipment type, ensuring secure support while effectively decoupling vibration energy from the building structure.

  • Substantial reduction in structure-borne vibration and noise
  • Enhanced equipment performance and extended service life
  • Improved acoustic conditions for noise-sensitive environments
  • Safe and stable operation under dynamic, seismic, or wind-induced loads
  • Broad compatibility across a wide range of mechanical systems
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VIBRO ISOLATOR VRSIF

These high-deflection, free-standing spring isolators feature large-diameter, laterally stable steel coils that are unhoused and engineered for optimal performance. Each spring assembly is integrated into a robust upper load plate with a precision leveling mechanism to ensure consistent load distribution and ease of installation.
  • Light-Duty Configuration: For lower load capacities, the isolators are equipped with molded neoprene bottom load plates, offering effective vibration damping and acoustic isolation.
  • Heavy-Duty Configuration: For higher load applications, the steel springs are securely welded to a heavy-gauge steel bottom load plate. A neoprene isolation pad is bonded to this plate to enhance vibration attenuation and reduce structure-borne noise.
Technical Features and Performance Criteria:
    • Spring Geometry: The ratio of spring diameter to compressed height under rated load is maintained at a minimum of 0.8, ensuring lateral stability and consistent performance.
    • Corrosion Protection: Springs are finished with an epoxy powder coating, tested to withstand up to 1000 hours of salt spray exposure for enhanced durability in harsh environments.
    • Acoustic Isolation: A neoprene friction pad is incorporated to act as a sound break, effectively minimizing the transmission of high-frequency vibrations.
    • Vibration Isolation Efficiency: The system achieves a vibration isolation efficiency exceeding 95%, making it suitable for sensitive equipment and noise-critical installations.
    • Structural Integration: Bottom plates are pre-engineered with bolt provisions to facilitate secure anchoring to the supporting structure.
    • Stability Assurance: Lateral stiffness of the spring assembly is designed to exceed 1.0 times the rated vertical stiffness, ensuring reliable performance under dynamic loads.
    • Overload Capacity: Each spring unit is rated to accommodate a minimum of 50% overload beyond its nominal load capacity. Springs are structurally safe even at solid height compression.